WO2021190878A1 - Circuit de commande de puissance et procédé de commande de puissance - Google Patents

Circuit de commande de puissance et procédé de commande de puissance Download PDF

Info

Publication number
WO2021190878A1
WO2021190878A1 PCT/EP2021/055197 EP2021055197W WO2021190878A1 WO 2021190878 A1 WO2021190878 A1 WO 2021190878A1 EP 2021055197 W EP2021055197 W EP 2021055197W WO 2021190878 A1 WO2021190878 A1 WO 2021190878A1
Authority
WO
WIPO (PCT)
Prior art keywords
power control
signal
control circuit
phase
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2021/055197
Other languages
German (de)
English (en)
Inventor
Hermann Josef SCHELLBERG
Tobias May
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Priority to EP21709935.7A priority Critical patent/EP4104646A1/fr
Publication of WO2021190878A1 publication Critical patent/WO2021190878A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/31—Phase-control circuits

Definitions

  • the invention relates to a power control circuit according to the preamble of claim 1. It can be a circuit commonly referred to as a "dimmer". It can control the power flow from a source to a consumer such as lights, motors or the like.
  • the source can be mains alternating voltage, for example 2S0 V at 50 Hz, 110 V at 60 Hz or the like.
  • Power control circuits of the type mentioned at the beginning have nominal powers, so they can switch powers within certain limits.
  • the limitation can result from a maximum permissible current in the switched-on (low-resistance state) of the dimmer circuit, since this load current, together with the voltage drop across the switch, generates power loss in the power control circuit, which manifests itself as heat. High currents can lead to high temperatures, and if the latter get too high, the circuit can be damaged. This means that a uniform dimmer cannot be used for all possible tasks. Rather, they have to be kept available in different designs according to their rated power and other sizes and finally installed.
  • the object of the invention is therefore to provide a power control circuit and a power control method which allow the combined use of several power control circuits.
  • At least two power control circuits are connected in parallel in such a way that they jointly control the current through a load.
  • the load can be formed, for example, by a large number of lamps that illuminate large rooms, or the like.
  • the power to be controlled is alternating voltage with, for example, 2S0 V or 110 V.
  • the frequency can be 50 Hz or 60 Hz.
  • One or each of the coupled power control circuits is designed for looping (switching on) into a first electrical line that carries electrical power from a source to a consumer. It can then use semiconductor switches or the like to control the flow of current in the line, in particular to switch periodically between on and off. It communicates with another power control circuit via a signal line. It has an operating control device which initiates an initialization phase and then a control phase. During the initialization phase, the operating mode of the power control circuit can be queried and the applied power examined, in particular with regard to whether it is an inductive or a non-inductive (ohmic / capacitive) load.
  • the phase position of the applied electrical power is checked and, in this regard, at least one transmitting and / or receiving signal is exchanged with a further power control circuit.
  • the performance is controlled in accordance with the previous checks and signaling. In the combined operation of several power control circuits, these will sometimes perform different processes, and for control operation one (the so-called "master”) will generate specifications for one or more other (so-called “slaves").
  • a single power control circuit can be designed for the "master" mode or for the "slave” mode. It can be designed to be switchable between the two types or can be permanently built for one or the other type.
  • a power control circuit designed as a master can also be designed for individual operation as a universal dimmer. It can be designed for power control for inductive and non-inductive loads (leading edge / trailing edge). Whether a power control circuit is to work as a master or as a slave can be registered electronically or digitally for further use in a suitable manner at a suitable time, for example by setting during manufacture of the power control circuit or by setting during assembly or by electronic means Setting in operation.
  • the power control circuit can be designed to receive or send a signal in the initialization phase that reflects the phase position of an applied power (AC voltage) .
  • it can send out a signal that reflects the phase position of the electrical power applied to its own power control circuit, for example by sending out pulses at zero crossings, then e.g. at each zero crossing and then at twice the frequency (100, 120 Hz), or a Signal are received that reflects the phase position of a device applied to a power control electrical power, which can also have the pulses described again.
  • it can be examined in the master circuit whether the applied load (i.e.
  • the consumer of the power to be controlled is an inductive or a non-inductive (ohmic / capacitive) consumer.
  • the power control mode can be set, in particular as phase control for inductive loads or as phase control for non-inductive loads.
  • the operation of the master coupled to a slave is preferably only carried out for non-inductive loads in the phase section, since the synchronization between master and slave is simpler for phase section control because only a single line is required.
  • the control of inductive loads in phase control is preferably carried out in individual operation of the circuit.
  • the switch control signal for its own electronic switching device is generated in the master power control circuit in accordance with the set power control mode (e.g. phase control, phase control) and a predetermined setpoint and used to control the electronic switch. It can be an on / off signal for a power semiconductor.
  • a switching signal is applied to the fifth connection, via which it is output and passed on to the fifth connection of a further slave power control circuit, which in turn generates its switch control signal as a slave in accordance with the switching signal received at its fifth connection.
  • the switching signal at the fifth connection can be the same as the switch control signal in terms of time and can be a differently leveled signal depending on given requirements. In particular, galvanic isolation can be provided here. If, however, running and switching times in the signaling from the master to the slave and processing times in the slave are not negligible and must therefore be taken into account, these can be achieved in the master by a delay between the switching signal at the fifth connection (comes earlier) and switch control signal (comes later) are formed so that the master and slave switch at the same time.
  • the duration of the delay in the master can be determined empirically and can be fixed. It can be in the order of magnitude between 1 ps and 1 ms.
  • the delay can be implemented digitally or in the analog signal branch of the master.
  • slave is set as the operating mode for the power control circuit (e.g. it is built as a slave)
  • a signal characterizing the phase position of an electrical power applied to the master circuit can be received or sent in the initialization phase.
  • the slave power control circuit is designed to receive such a signal and to compare it with the corresponding signal generated by itself. Conversely, if the master power control circuit is designed to receive a phase signal, the slave power control circuit will send out the corresponding signal and the comparison is made in the master
  • Power control circuit made. It can be the pulse sequences already described corresponding to zero crossings of the alternating voltage.
  • the comparison can include checking the described pulses of the respective pulse sequences for sufficient temporal coincidence. It can thus be determined whether the coupled power control circuits are connected to the same electrical phase or to different electrical phases of a three-phase system.
  • phase position differs significantly in conventional three-phase systems, in particular by 2/3 p in the common three-phase system, corresponding to 6.67 ms at 50 Hz or 3.33 ms with frequency doubling after full-wave rectification / zero crossing measurement.
  • a parallel connection must then be prevented as this would lead to short circuits.
  • a divergence of the phase positions is then an error criterion for parallel operation, but not necessarily for single operation of the master.
  • the comparison requires a few half-waves of the alternating signal and can last, for example, longer than 20 or 40 ms and shorter than 500 or 200 ms.
  • the type of connected load (inductive or non-inductive) can be checked in the master. This, too, can require a few half-waves of the alternating signal and can last, for example, longer than 50 or 100 ms and shorter than 500 or 200 ms. Depending on this check, the control mode (leading edge / trailing edge) can be set.
  • a slave power control circuit will receive the switching signal from the master power control circuit in the control phase from the fifth connection and accordingly generate its own switch control signal. It can be passed through directly or it can undergo an impedance conversion and, if necessary, a potential separation or can be scaled appropriately. The temporal position of the relevant signal parts can be passed through directly, for example the edge of a gate signal for an FET.
  • a power control circuit can have a sixth connection, by means of which it can communicate with a higher-level controller.
  • the higher-level control can be used to initiate the initialization phase and the control phase of the power control circuit, can receive and evaluate error signals and send corresponding control signals to the individual power control circuits, in particular an interrupt signal in order to interrupt or prevent the switching of power in the event of an error.
  • the power control circuits connected in parallel are then no longer completely symmetrical. Rather, one of the circuits will perform essential control tasks and control steps, it will then be addressed as a master, and one or more others will at least partially take over results and signals from the master power control circuit, such power control circuits are then described as slaves.
  • a power control circuit can have an operating mode setting device by means of which an electronically retrievable operating mode definition can be set. It can be an adjustable electrical value, for example a potential at a specific circuit point, a resistor or the like.
  • a digital control can also be a value set in a digital register, which can be more or less fixed or overwritten. Based on the definition set in this way, it can be queried electronically in which of the at least two possible ways the power control circuit should and will work.
  • a third operating mode that is, an operation in which the power control circuit is neither master nor slave, but only acts on its own. For example, any signaling to the fifth connection can then be prevented and / or signals from there can be ignored.
  • the definition of the operating mode on master or slave or possibly also independently can be adjustable during manufacture and / or during installation and / or during operation of the power control circuit.
  • the power control circuit can have a control mode setting device for setting an electronically retrievable control mode setting.
  • a control mode setting device for setting an electronically retrievable control mode setting.
  • Control mode for example, between phase control and phase control, depending on whether the load is inductive (then phase control) or whether it is non-inductive (capacitive / ohmic) (then phase control).
  • This value can be set as a result of the investigation of the connected electrical load. It can only be made in the master, so that the appropriate specifications for generating the required switch control signals are then made in the master. The corresponding signals are then merely passed through to the slave power control circuit (s) by means of the switching signal.
  • a power control circuit can have a selection device which either selects a self-generated signal as the switch control signal for the electronic switching device or selects a signal generated from the fifth connection in accordance with the switching signal.
  • the first choice can be made in the master, the last choice in the slave. The selection can thus be made in accordance with the definition in the setting device operating mode.
  • the power control circuit can include a combination of digital and analog components. It can have a digital control device that controls one or more of the following processes by means of digital signal processing, in particular in accordance with one or more control programs:
  • Phase comparison by comparing the results of the self-made examination of the applied power and the examination results of the applied power of the connected power control circuit reflected by the signal at the fifth connection. This can be done in particular in the slave. Depending on the check, signaling can be carried out, for example error messages to another power control circuit, to a higher-level controller or the like.
  • connection test for two-wire connection or three-wire connection and making any necessary settings.
  • the electronic control device can be a small computer or microcomputer or processor which executes suitably switched firmware or software and can thus carry out normal computer processing. If necessary, analog / digital and digital / analog conversions, memories (registers, RAM, ROM), interfaces, etc. are available.
  • a power control circuit can have wireless couplers in order to exchange signals with other power control circuits and / or with a higher-level controller.
  • wireless couplers can be connected to the fifth port to be able to communicate decoupled with a further power control circuit, and / or at the sixth connection in order to be able to communicate wirelessly or decoupled with a higher-level controller, and / or at the fourth connection in order to be able to receive setpoint signals from a higher-level controller in a decoupled / wireless manner, if necessary.
  • the wireless couplers can have different protection classes.
  • the wireless coupler on the sixth connection can meet stricter protection requirements than the wireless coupler on the fifth connection.
  • a wireless coupler can be, for example, an optocoupler or another suitable wireless coupler device.
  • the exchange of signals or communication between power control circuits (via the fifth connection) or between the power control circuit and the higher-level controller (via the sixth connection) can take place in accordance with a suitable protocol, such as the I2C protocol or UART.
  • the power control circuit can have a fourth connection for the setpoint input, that is to say the input of the value to which the power is to be controlled.
  • the target value can be a proportion of the maximum possible power value and can therefore be understood as a relative / percentage information related to the maximum possible power.
  • the fourth connection can be a mechanical connection, for example the axis of rotation of a rotary control / potentiometer, or the slide of a slide controller in order to be able to set a potentiometer.
  • the fourth connection can, however, also have an electrical line from another controller, which inputs corresponding setpoint values.
  • the fourth connection can also have both options side by side.
  • the setpoint can also be entered from the higher-level controller provided for control purposes via the sixth connection.
  • the fourth connection can then be omitted.
  • the communication standard on the sixth and / or on the fourth connection can follow the UART standard.
  • the power control circuit can also have a third connection by means of which it can be connected via a stub line to the other electrical line that closes the circuit and supplies electrical power to the consumer. If this connection is connected to the other electrical line, the so-called three-wire connection is present, otherwise the two-wire connection.
  • the former has advantages in terms of internal energy supply, synchronization and the like. In the initialization, detection of a two-wire or three-wire connection and then, if necessary, the making of the associated internal settings can be provided.
  • the electronically controlled switching device can have one or more transistors, power semiconductors, IGBTs, FETs. They can be designed to switch on and off.
  • the power control circuit can have an error handling device which is designed at least to recognize faulty situations.
  • this can be the inconsistent phase position of the electrical powers on power control circuits that are coupled to one another.
  • phase positions this is recognized in one of the coupled power control circuits based on its own phase position compared with the communicated phase position of the coupled power control circuit. If there is a phase deviation, this is an indication of an error at least for the coupled operation.
  • the error handling device can then output an error signal.
  • the error signal can be used internally to cut off the power supply and / or can be communicated externally, for example to the connected power control circuit, which in turn then cuts off the power supply, and / or to a superimposed controller, which then uses the coupled power control circuits to sub- interruption of the power supply.
  • the error handling device can generate an interrupt signal that directly correlates with the error signal.
  • the interrupt signal can be generated in response to a signal from another power control circuit or from a higher-level controller.
  • the operating control device of the power control circuit can be designed to control the initialization phase when electrical power is applied to the power control circuit (i.e. after the first installation or after power interruption) and / or can perform it repeatedly time-controlled or initiated by a higher-level controller, and / or it can be carried out in an event-controlled manner, for example if a switch-on process is specified as a target from the fourth connection.
  • a power control circuit system includes a plurality of interconnected power control circuits. They can be designed as described above.
  • the plurality of power control circuits can be connected in a plurality of different first electrical lines or can have first and second connections connected in parallel and connected / looped into one and the same first electrical line with these.
  • Fig. 1 is an overview diagram of connection options for several rer power control circuits
  • FIG. 2 shows a block diagram of a power control circuit
  • FIG. 3 shows signaling over time
  • 4 shows a selection device
  • Fig. 1 shows qualitatively a typical building installation situation.
  • 4 generally denotes an energy source. It can be an available three-phase connection with a neutral conductor N and three phases LI, L2 and L3 (not shown), which can each have a frequency of 50 Hz to the neutral conductor 230 V AC.
  • the three phases LI, L2 and L3 are phase shifted from one another by 120 ° (2/3 p) and are available at least in the control cabinet, but often also directly in many rooms together with the neutral conductor N.
  • 3 consumers are indicated. For example, there can be many consumers connected in parallel, such as many lamps. For example, you can illuminate long corridors or large rooms or halls. In any case, they are jointly connected to the neutral conductor N.
  • the respective other ends of the consumers / lights 3 can also be coupled to one another via the dashed connection lc, so that they are actually connected in parallel and cannot be switched individually.
  • the power drawn jointly by the loads 3 can be so great that a single power control circuit 10 looped into the line 1, 1 a, 1 b can no longer cope with it.
  • several power control circuits 10M, 10S can be operated coupled to one another. The coupling takes place via a line 21 which extends between the power control circuits 10.
  • Each of the power control devices 10 can control or regulate the power passing through them proportionally from a maximum value down to 0 by switching switches in the respective power control circuit 10 suitably between conductive / low-resistance / on and non-conductive / high-resistance / off.
  • With AC control operation can take place as phase control or phase control.
  • the electronic see switching device 12 formed internal switches are controlled by an internal controller 15 in accordance with the desired phase control or phase section. This can switch through a desired portion or phase angle ⁇ of the respectively connected half-wave and cut off the rest at the beginning (phase control) or at the end (phase control).
  • the internal controls 15 communicate with one another via the line 21. 13 in FIG. 2 symbolizes the energy supply of the power control circuits 10. It can be provided internally in each of the power control circuits 10.
  • the controls can be implemented by suitable digital circuits, for example as microcomputers pCl and pC2 in FIG. 1.
  • the two objectives of incorrect installation detection and switching synchronization are achieved by means of the line 21 between the coupled power control circuits 10 and suitable control of the system components or the overall system is sufficient.
  • Fig. 2 shows a block diagram of a power control circuit 10, of which at least two can be coupled together, as shown schematically in Fig. 1 and as indicated in Fig. 2 by means of the small additional power control circuit 10 on the right edge of the figure .
  • Fig. 2 shows the power control circuit 10, which can commonly be addressed, for example, as a dimmer. It is connected to a first electrical line 1 (looped one) and is therefore connected to its two open ends la, lb. It should be pointed out that the lines la and lb do not actually have to be separated ends of a line that was previously connected.
  • the first electrical line 1 conducts electrical power from a source 4 to the consumer 3.
  • the source 4 can be an alternating current source, in particular a phase opposite the neutral conductor or neutral conductor of a three-phase system.
  • a second electrical line 2 closes the circuit.
  • At least the parts 1 a and 1 b of the first electrical line 1 are connected to a first connection 11-1 and a second connection 11-2 of the control circuit 10.
  • the second electrical line 2 can also be connected to a third connection 11-3 of the power control circuit 10 via a stub line 2a.
  • the three-wire connection has advantages for the internal energy supply and for switching synchronization and then also allows other areas of controllable electrical power.
  • an electronic switching device is referred to. It can be a single or multiple transistors, IGBTs and / or FETs, MOSFETs. Several of them can be connected in series or in parallel and operated together.
  • the electronic switching device 12 lies between the first connection 11-1 and the second connection 11-2 and is used to either block the connection between the two connections with as high an impedance as possible or to switch it through with as low an impedance as possible cutting control or in the manner of a phase control or can be designed for all of these types of control.
  • the semiconductors or transistors can be power semiconductors or power transistors.
  • a control device 15 of the power control circuit 10 generates a switch control signal S, by means of which the switching operations of the electronic switching device 12 are controlled.
  • the switch control signal S can therefore control phase control or phase control.
  • the control device 15 includes a switching device control circuit 15-2 that generates and outputs the switch control signal S. It also has an operational control device 15-1, which initiates internal processes of the power control circuit 10 and in particular of the control device 15 and controls their sequence.
  • the control device 15 also has an operating mode setting device 23 and a control mode setting device 24.
  • An internal energy supply 13 and a synchronization circuit 14 of the power control circuit 10 are also provided.
  • the internal energy supply 13 generates the necessary potentials for operating the control device 15 and for operating the electronic switching device 12.
  • In the three-wire connection it can easily obtain the required energy from the Pull AC voltage source 4.
  • In the two-wire connection it can draw energy from the voltage drop across the switch 12 when it is open, that is, it is high-resistance.
  • a test device 16 can be provided. that checks whether there is a two-wire connection or a three-wire connection and which makes different internal settings accordingly.
  • the power control device 10 can have a fourth connection 11-4, via which a control setpoint value can be received, for example as a setpoint phase angle ⁇ .
  • the fourth connection 11-4 can in the simple case be a mechanical connection, for example the axis of rotation of a potentiometer or the slide of a slide control. However, it can also be an electronic interface in order to receive power setpoints from higher-level controls.
  • the power control device 10 can also have both setpoint inputs, that is to say electronically and mechanically manually from a user.
  • a fifth connection 11-5 of the power control circuit 10 is used to connect a signal line 21, by means of which the power control circuit 10 can exchange signals with a further power control circuit 10.
  • One of the two then works as a master, the other as a slave.
  • the further power control circuit 10 is provided to work in parallel with the detailed power control circuit 10 and is therefore connected to the first line 1 in parallel with it.
  • the two power control circuits 10 can have first connections 11-1 connected in parallel and second connections 11-2 connected in parallel (and possibly also third connections 11-3 connected in parallel). This is not shown in FIG. 2 only for the sake of clarity of the drawing.
  • the power control circuit 10 can communicate with a higher-level controller 50 via a sixth connection 11-6 and can receive signals from it or output signals to it.
  • a line 22 can be provided for this purpose.
  • the signals at the fourth connection 11-4 and / or at the fifth connection 11-5 and / or at the sixth connection 11-6 can be analog or digital. You can do one Be written following the standard, for example in accordance with I2C or in accordance with UART, the latter in particular at the sixth connection 11-6.
  • a control setpoint for example as a setpoint phase angle ⁇ , can also be specified for the power control circuit 10 from the higher-level controller 50 via the sixth connection 11-6.
  • a housing of the power control circuit 10 is indicated.
  • the power control circuits 10 described will be designed for use in a switch cabinet. In terms of their geometrical dimensions, they or their housing 17 can then be shaped like a flat disk. However, they can also be designed for installation in flush-type boxes and then be geometrically dimensioned accordingly.
  • the operating mode setting device 23 holds an electronically retrievable, digital or analog value which indicates whether the power control circuit 10 is to operate as a master or as a slave. It can be a flip switch that causes different potentials for example and which can be used once during assembly. Or it can be an element already installed during the manufacture of the power control circuit, such as a resistor, the effect of which indicates whether the power control circuit should work as a master or as a slave, or it can be a digitally settable register that, if necessary can also be switched after manufacture or assembly.
  • the control mode setting means 24 may be a digital register. For example, it can be switched between two control modes; the two modes can be phase control and phase control.
  • the control mode can be specified at the start of operation based on an internal test of the load 3 present.
  • 18-1, 18-2 and 18-3 wireless couplers are addressed, which are used to galvanically isolate the power control circuit 10 from other components.
  • a wireless coupler can be at the fifth input 11-5 and one at the sixth input 11-6.
  • the wireless coupler 18-2 at the sixth connection 11-6 to the superordinate control 50 can have a higher protection class than the wireless coupler 18-1 at the fifth connection 11-5 to the further power control circuit 10. If wireless couplers to the superordinate control 50 are necessary , but these can also be provided there and then be omitted in the power control circuit 10.
  • the fifth connection 11-5 can be designed twice in such a way that two or more further power control circuits 10 can be connected to it in parallel via separate lines 21, which can lead to the connection structure shown in FIG.
  • the signal line 21 can be designed to carry analog signals.
  • the line 22 to the higher-level controller 50 can be designed to carry digital signals, in particular according to the UART standard.
  • the power control setpoint specification can also be carried out by the higher-level controller 50. It can therefore be entered via the described sixth connection 11-6 of the power control device 10 in the operating phase. A separate connection 11-4 for the setpoint specification can then be omitted. However, it can be provided in parallel in spite of this, for example as a mechanical connection only (slide, rotary knob) that z. B. generated an analog signal with potentiometer).
  • the line marked with 10M shows the activities of a power control circuit 10 operating as a master
  • the line marked 10S shows the activities of a power control circuit operating as a slave.
  • the line marked 50 shows the activities of a higher-level controller 50.
  • the line marked 21 shows signals on the signal line 21 between two power control circuit 10.
  • the line marked 22 shows signals on the line 22 between a power control circuit 10 and a higher-level control 50.
  • the operation of a power control circuit 10, both in the case of a master 10M and in the case of a slave 10S, can be divided into an initialization phase 31 and a subsequent control phase 32.
  • the initialization phase can last a few half-waves, together for example longer than 100 or 200 ms and z. B. shorter than ls.
  • the control phase 32 thereafter is regular operation of any duration.
  • control phase 32 power control according to the type of phase control or phase control is carried out for the electronic switching device 12.
  • the switch control signal S controls the electronic switching device 12 in a manner known per se. In Fig. 3 this is shown as the pulse train S in lines 10M and 10S as the activity of the power control circuit 10M, 10S, in particular its switching device control circuit 15-2.
  • the way in which the switch control signal S is generated differs between a power control circuit 10M operating as a master and a power control circuit 10S operating as a slave, and there are also different activities in the upstream initialization phase 31.
  • the initialization phase 31 as well as the control phase 32 can be initiated externally, for example by signaling from the higher-level controller 50. In Fig. 3 this is indicated by signals XI and X2, which for example from the control circuit 50 via line 22 to all power control circuits 10M,
  • the 10S are sent and then the initialization phase 31 or the control phase initiate se 32.
  • the initiation of these phases can take place differently, for the initialization phase 31, for example, in a master circuit 10M by a switch-on process, i.e. by increasing the power setpoint from the fourth connection 11-4 or the sixth connection 11-6 from 0, or with the first Energy supply of the power control supply 10.
  • the control phase 32 can - instead of as shown by a signal X2 from the higher-level controller 50 - initiated after a "ready" signal from the initialization phase 31 or after a predetermined time.
  • the higher-level controller 50 and the controllers 15 can be designed to abort the control phase or not to start when an error has occurred, such as a phase error or a load error.
  • all power control devices 10 can, if necessary, query their operating mode, which is indicated by "M / S?" is indicated in time blocks 31-1.
  • the operating mode setting devices 23 is queried here to determine whether they are each set to master or slave.
  • a marker that cannot be digitally read is transferred to a digitally readable format.
  • the subsequent operation can differ, for example in which software branches in the master are different from those in the slave.
  • the operating control device 15-1 will then work differently depending on whether the power control circuit 10 is operating as a master or as a slave.
  • the initially explicit query of the type of operation can be unnecessary and can be omitted or replaced by queries if necessary, if z. B. a digitally readable marker is set right at the beginning.
  • the master control device 10M and the slave control device 10S can initiate a phase investigation 31-2 or .
  • each generate a phase signal that shows the phase position of the Applied electrical power reflects in order to be able to make a phase comparison to determine whether they are connected to the same phase or to different phases in a three-phase system. This is symbolized in lines 10M and 10S by the pulse trains 31-2M and 31-2S.
  • Each of the coupled power control circuits 10 can generate such a pulse sequence, in particular corresponding to the zero crossings of the applied AC voltage.
  • the at least two coupled power control circuits 10 When properly installed for the coupled operation of the power control circuits 10, the at least two coupled power control circuits 10 are on the same phase, for example LI in FIG. 1, and the pulses of the pulse trains 31-2M and 31-2S will therefore be at the same time. If, on the other hand, the power control circuits 10 were accidentally connected to different phases, for example one of the power control circuits 10 to LI and the other to L2, the phase position will deviate by 1/3 of the period, i.e. by ⁇ 6.7 ms at 50 Hz. With period doubling when considering all zero crossings, it is ⁇ 3.3 ms.
  • the master 10M can appropriately scale and format the pulse train 31-2M determined by it via the fifth connection 11-5 and signal line 21 as a phase signal 31-2X and, if necessary, feed it to a slave 10S via the wireless coupler.
  • a slave 10S can compare the pulse train 31-2X received from the fifth connection 11-5 with the self-generated pulse train 31-2S. This and any subsequent processing are symbolized in line 10S by block 31-3.
  • the phase signal is preferably transmitted from the master XP to the slave 10S or to all slaves, if there are several, and compared there individually with the respective slave phase signal.
  • the phase signals 31-2M, 31-2X, 31-2X can therefore be sequences of short pulses at each detected zero crossings, which can then be checked in one of the circuits for sufficient temporal coincidence.
  • an error signal XF can be generated and, if necessary, can also be output to other components, for example other power control circuits 10 or the higher-level controller 50.
  • the error signal XF can also be used in the slave to directly prevent the power through-connection in order to prevent short circuits.
  • it can also be fed to the higher-level controller 50, which can then, for example, inform other power control circuits 10 and, if necessary, switch them off.
  • Higher-level alarms can also be generated so that, for example, installer intervention is requested.
  • a load query 31-4 or load investigation can begin in the master 10M in order to determine whether the applied load 3 is inductive or non-inductive (capacitive or ohmic).
  • a slave power control device 10S can or does not have to do this. It can remain passive / inactive here.
  • the investigation of the type of load is carried out by means of a suitable test application of voltage to the connected load via the electronic switching device 12 and evaluation of the currents that are set. In particular, it can be checked in the phase section whether induction peaks occur when switching off (cutting off the phase or half-wave), which is an indication of an inductive load and, if it is not present, an indication of an ohmic or capacitive load.
  • the control circuit 15 of the power control circuit 10 can determine the type of load (inductive or non-inductive (capacitive, ohmic)) and set a suitable control mode accordingly.
  • This can in particular be a phase control (in the case of inductive loads) or phase control (in the case of capacitive or ohmic loads).
  • the master 10M can then appropriately set its control mode setting device 24 accordingly.
  • the setting value specifies whether, for example, in phase change cut (with inductive load) or in phase cut (ohmic, capacitive load).
  • the overall circuit can also be designed to check whether there is a parallel connection of consumers 3 on the output side, i.e. whether the line lc was switched between the lines lb of the individual consumers, so that in addition to the common input-side connection of the consumer lines 2 to N. whose output side is closed in parallel with line lc.
  • the load detection in which the master 10M initiates a check as to whether an ohmic / capacitive or an inductive load is connected, can extend over some (e.g. more than 5, more than 10), less than 50) half-waves and can start, by switching power on in the master 10M with initially small and then, for example, phase angles increasing from half-wave to half-wave and switching off again in the phase section, e.g. B. from initially 5% of the half-wave duration (500 ps at 50 Hz) successive increase to e.g. 6%, 7%, 8% ... up to a maximum of z. B. 30% or 50% of the half-wave duration. It is then checked whether inductively generated induction peaks arise when switching off. In particular, this can be measured in slave 10S, which itself does not switch at this point in time, for example by comparing the voltage from the load with a suitable threshold value.
  • Such a check in slave 10S can then query or determine two qualities, namely (1) whether the various consumers are also switched in parallel on the output side, i.e. whether the dashed line lc is present on the left side of the consumer and thus a parallel connection of Consumers is given, because only then are switching results from the master 10M to the slave 10S at all, and (2) as already explained whether the load is inductive or non-inductive based on the induction peaks that may arise.
  • the slave 10S can adjust its measurement result notify the higher-level control 50, which then takes further measures. Initially, only small phase angles are used to ensure that no large induction peaks occur with inductive loads.
  • the master 10M can also monitor suitable threshold values in this phase and thus detect induction peaks and thus an inductive load in the phase section.
  • the switch-off signal from the master is passed on to the slave via the signal line 21. No signal is transmitted on line 21 in separate operation.
  • a query can be made for a two-wire connection or a three-wire connection and internal settings can be made based on the query result.
  • the control phase 32 begins, as already mentioned above.
  • a master 10M will generate the switch control signals S in a more or less conventional manner by sending them from the fourth terminal 11-4 in accordance with setpoint specifications suitable Drucksteue approximately signals S generated, by means of which the own electronic switching device 12 can be controlled.
  • the type of load or the type of control can also be taken into account here.
  • the switch control signals S will usually be a periodic internal pulse sequence by means of which the electronic switching device 12 is controlled, in particular, for example, a MOSFET is switched on and off.
  • a master power control circuit 10M will output a switching signal XS via the fifth connection 11-5 and the signal line 21 to the connected slave 10S in accordance with or in accordance with its own switch control signal S, however.
  • a slave 10S will in turn receive the switching signal XS from its fifth connection 11-5 and will generate the switch control signal S for the electronic switching device 12 of the slave in accordance with the received switching signal XS.
  • the master 10M can pass its switch control signal S directly to the slave 10S, possibly via the wireless coupling, in turn, the slave 10S being able to generate its internal switch control signal S directly following the received switching signal XS.
  • an internal delay circuit can be provided in the master that simulates the delay in the transmission to the slave 10S. In this way, it is ensured that the two coupled power control circuits 10 operate synchronously and in particular switch synchronously. It is empirically shown that such a delay in the master can be in the range of about 100 ms, for example greater than 10 or 20 or 50 ms and less than 500 or 200 ms.
  • a setpoint for the power control is only set in the master
  • Power control device 10M received or processed.
  • the result of the load detection 31-4 is also processed only in the master power control device 10M in that phase control or phase control is activated as the control mode.
  • the slave power control device 10S participates in these determinations by passing the switch control signal S from the master 10M directly to it.
  • the signal flow on the signal line 21 can be designed to be unidirectional, for example only from the master 10M to the slave 10S.
  • the signal separation via the wireless coupler can then be carried out more easily (in one direction). However, it can also be desired that the slave 10S sends signals to the master 10M. Then the wireless coupler may also have to be designed to be bidirectional.
  • the line 22 between a power control circuit 10 and a higher-level controller 50 can be designed to be bidirectional.
  • FIGS. 4 shows, in a highly schematic and highly simplified manner, a selection device 41 for selecting the type of generation of the switch control signals S.
  • the selection device 41 is to be understood as part of what is already shown schematically in FIGS.
  • a changeover switch is indicated at 41, which can, however, be designed logically in that one of two possible processing methods is selected on the digital side.
  • the switch 41 is therefore to be understood primarily symbolically and is often not actually implemented.
  • 23 is the operating mode setting device already described, which indicates whether a power control device 10 is operating as a master or as a slave. It will influence the selection by means of switch 41.
  • the switch control signal S is generated in the slave 10S in accordance with the signal received from the fifth terminal 11-5. In contrast, however, the switch control signal S is generated in the master 10M from the fourth connection 11-4 in accordance with the setpoint specification.
  • Fig. 5 shows a power control circuit system having a plurality of power control circuits 10M, 10S.
  • 10M works as a master
  • the other 10S1, 10S2, ..., 10S6 work as slaves. They are star-connected to one another in such a way that the slaves 10S receive signals, in particular phase signal S1-2X, switching signals XS, from master circuit 10M in the same and parallel manner and then work as described.
  • each of the circuits 10 can have its own connection to a higher-level controller 50.
  • the Master 10M can be used for Closed slave 10S have their own wireless coupler 18-1, so that the slaves 10S are isolated not only from the master 10M, but also from one another.
  • a master power control circuit 10M can be identical to a slave
  • Power control circuit 10S may be designed. Differences then arise only on the basis of the stipulations on operating mode master or operating mode slave by means of the operating mode setting device 23. If this is not digitally queryable information, it can be queried once initially and transferred to a digitally queryable format. B. can be used for software control.
  • the master power control circuit 10M and the slave power control circuit 10S can also be designed to be partially different.
  • the master 10M can have one or more wireless couplers 18-1 to the slave or slaves 10S.
  • a wireless coupler 18-1 can also be provided in the slave 10S.
  • the fifth connection 11-5 can only be designed and connected as an output in the master 10M, and only as an input in the slave 10S.
  • a slave 10S may not have a fourth connection 11-4 for the setpoint specification.
  • a delay device implemented with software or as hardware for delaying the switch control signal (S) for its own semiconductor switch can only be provided in the master.
  • the software equipment of the master 10M and slave 10S can also be different.
  • Load detection software can only be installed in the master or in the master differently than in the slave.
  • Phase comparison software can only be installed in the slave or only in the master.
  • the technique described above can also be viewed as a power control method for controlling the power in an electrical load, in which at least two power control circuits 10 are switched in parallel to one another in an electrical line and exchange signals with one another via a signal line 21 in such a way that in one Initialization phase between the power control circuits, phase information is exchanged and, if necessary, an error signal is generated and, in a control phase, if there is no error, in a power control circuit operating as a slave, the switch control signal of which is generated in accordance with the specifications of a power control circuit operating as a master.
  • One aspect of the invention is also a power control system with a power control circuit configured or built as a master as described above and one or more power control circuits configured or built as a slave as described above, each with a signal line 21 between master 10M and one slave 10S each.
  • the higher-level control can also be part of the system.
  • the phase detection, the parallel connection detection and the detection of the load type they can interact as described.
  • Descriptions of driving or procedures or procedural steps or procedural steps should also be understood as a description of facilities and / or possibly code executable by program instructions on a data carrier that are suitable for implementing the mentioned procedures or procedures or procedural steps or procedural steps, and vice versa.

Landscapes

  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

La présente invention concerne un circuit de commande de puissance comprenant un dispositif de commutation électronique destiné à commuter la puissance électrique dans une ligne électrique conformément à un signal de commande de commutation, un circuit de commande de dispositif de commutation destiné à actionner le dispositif de commutation électronique et un dispositif de commande de fonctionnement qui demande un mode de fonctionnement du circuit de commande de puissance dans une phase d'initialisation, examine la puissance appliquée au circuit de commande de puissance, puis communique un ou plusieurs signaux par l'intermédiaire d'une connexion à un autre circuit de commande de puissance sur la base du mode de fonctionnement demandé et du résultat de l'examen de puissance. Dans une phase de fonctionnement, la puissance est commandée sur la base du mode de fonctionnement demandé au moyen du circuit de commande de dispositif de commutation et du dispositif de commutation.
PCT/EP2021/055197 2020-03-27 2021-03-02 Circuit de commande de puissance et procédé de commande de puissance Ceased WO2021190878A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21709935.7A EP4104646A1 (fr) 2020-03-27 2021-03-02 Circuit de commande de puissance et procédé de commande de puissance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020108475.7 2020-03-27
DE102020108475.7A DE102020108475A1 (de) 2020-03-27 2020-03-27 Leistungssteuerungsschaltung, leistungssteuerungsverfahren

Publications (1)

Publication Number Publication Date
WO2021190878A1 true WO2021190878A1 (fr) 2021-09-30

Family

ID=74858416

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/055197 Ceased WO2021190878A1 (fr) 2020-03-27 2021-03-02 Circuit de commande de puissance et procédé de commande de puissance

Country Status (3)

Country Link
EP (1) EP4104646A1 (fr)
DE (1) DE102020108475A1 (fr)
WO (1) WO2021190878A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006013518B3 (de) * 2006-03-23 2007-09-27 Siemens Ag Mehrkanaldimmer sowie Verfahren zum Prüfen einer Verschaltung von Lastausgängen an Dimmereinheiten eines Mehrkanaldimmers
DE102016209278B3 (de) * 2016-05-30 2017-08-10 Siemens Schweiz Ag Dimmersystem
DE102017213888B3 (de) * 2017-08-09 2018-10-31 Siemens Schweiz Ag Dimmer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3071377B1 (fr) 2017-09-20 2019-09-06 Hager Controls Procede de mise en fonctionnement d'un ensemble d'au moins deux variateurs de lumiere
DE102018009924B4 (de) 2018-12-17 2020-10-01 Siemens Schweiz Ag Dimmer und Verfahren zum Erkennen der korrekten Verdrahtung von Dimmkanälen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006013518B3 (de) * 2006-03-23 2007-09-27 Siemens Ag Mehrkanaldimmer sowie Verfahren zum Prüfen einer Verschaltung von Lastausgängen an Dimmereinheiten eines Mehrkanaldimmers
DE102016209278B3 (de) * 2016-05-30 2017-08-10 Siemens Schweiz Ag Dimmersystem
DE102017213888B3 (de) * 2017-08-09 2018-10-31 Siemens Schweiz Ag Dimmer

Also Published As

Publication number Publication date
EP4104646A1 (fr) 2022-12-21
DE102020108475A1 (de) 2021-09-30

Similar Documents

Publication Publication Date Title
EP2002413B1 (fr) Canal de transmission bidirectionnel séparé galvaniquement
EP3245527B1 (fr) Testeur de transformateur et procédé de test d'un transformateur
DE102012104560B4 (de) Erkennung der Stringkonfiguration für einen Multistring-Wechselrichter
DE112010000698T5 (de) Elektrischer Schaltkreis mit redundanter Verbindungsleitung
EP0901313B1 (fr) Système gradateur
EP2383622B1 (fr) Dispositif de raccordement destiné au raccordement d'appareils de terrain
EP3266031A1 (fr) Dispositif de commutation permettant de faire fonctionner au moins une charge
EP3253182B1 (fr) Système gradateur de lumière
EP1465464B1 (fr) Module gradateur
EP3625933B1 (fr) Borne de bus pour système d'automatisation et procédé destiné à contrôler un réseau électrique d'alimentation
EP3275067B1 (fr) Procédé de liaison d'une installation de production d'énergie à un réseau de moyenne tension et installation de production d'énergie
DE19751828B4 (de) Verfahren und Vorrichtung zur Erkennung und Steuerung von elektronischen Schaltnetzteilen oder konventionellen Transformatoren, jeweils mit oder ohne ohmscher Last, insbesondere von Beleuchtungseinrichtungen
DE102010047220B4 (de) Verfahren zum Betreiben einer Sprachdurchsageanlage
WO2021190878A1 (fr) Circuit de commande de puissance et procédé de commande de puissance
EP2071693A2 (fr) Procédé et circuit destinés à la commande de l'alimentation en énergie de plusieurs onduleurs monophasés dans un réseau multiphases
DE10207856A1 (de) Verfahren und Vorrichtung zur Messung der Impedanz eines elektrischen Energieversorgungsnetzes
EP3666045B1 (fr) Gradateur multicanaux
EP3929595A1 (fr) Borne de mesure d'énergie ou circuit de mesure d'une borne de mesure d'énergie
EP2704332A2 (fr) Installation d'éclairage de secours/de sécurité et son procédé de commande
EP3672375B1 (fr) Variateur de luminosité
EP2721735B1 (fr) Dispositif de commutation comprenant un commutateur statique et un circuit de commande associé
DE4430441C2 (de) Vorrichtung zur Steuerung von elektrischen Verbrauchern
EP3850796B1 (fr) Unité centrale de bus à contrôle de puissance
EP4064489A1 (fr) Installation électrique pourvue d'appareil de protection électronique, unité d'évaluation, ainsi que procédé de fonctionnement d'une installation électrique
DE102008027887A1 (de) Verfahren und Schaltungsanordnung zum Steuern der Energieeinspeisung von mehreren einphasigen Wechselrichtern in ein Mehrphasennetz

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21709935

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021709935

Country of ref document: EP

Effective date: 20220912

NENP Non-entry into the national phase

Ref country code: DE