EP2583367A2 - Procédé et dispositif pour compenser une chute de la tension de sortie d'une génératrice de véhicule automobile - Google Patents

Procédé et dispositif pour compenser une chute de la tension de sortie d'une génératrice de véhicule automobile

Info

Publication number
EP2583367A2
EP2583367A2 EP11724413.7A EP11724413A EP2583367A2 EP 2583367 A2 EP2583367 A2 EP 2583367A2 EP 11724413 A EP11724413 A EP 11724413A EP 2583367 A2 EP2583367 A2 EP 2583367A2
Authority
EP
European Patent Office
Prior art keywords
generator
motor vehicle
vehicle generator
operating point
voltage
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.)
Withdrawn
Application number
EP11724413.7A
Other languages
German (de)
English (en)
Inventor
Michael Herz
Andre Micko
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.)
SEG Automotive Germany GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2583367A2 publication Critical patent/EP2583367A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/48—Arrangements for obtaining a constant output value at varying speed of the generator, e.g. on vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/16—Regulation of the charging current or voltage by variation of field
    • H02J7/24—Regulation of the charging current or voltage by variation of field using discharge tubes or semiconductor devices

Definitions

  • the invention relates to a method and a device for compensating for a break in the output voltage of a motor vehicle generator.
  • the vehicle electrical system of a motor vehicle is powered by a generator whose output voltage is controlled by a generator controller to a predetermined value, for example to 14V.
  • Load connections or speed changes in the motor vehicle can lead to a collapse of the vehicle electrical system voltage.
  • the generator controller controls this voltage dip, which increases the torque request to the driveline or to the engine.
  • the connection of the load requires a higher torque to drive the generator.
  • the regulation takes place by an increase of the exciting current in the rotor of the generator device. This increase is brought about by an increase in the duty cycle of a PWM signal set by the generator controller. By changing the magnetic field resulting from the exciting current, the voltage induced in the stator is increased.
  • the duty cycle is first of all limited by a predetermined value, also as “blind zone” or “blind zone”. is called to increase, so that a rapid response to the voltage dip takes place, and only then to increase further with the limit limited by the load response function slew rate.
  • the "blind zone” or “blind zone” is defined as the duty cycle delta, within which a fast compensation can take place. With current controllers, the “blind zone” is set to a fixed value or can be switched between two values.
  • the resulting possible loads, which can be quickly corrected, as well as the resulting possible torque changes, are not constant, but depending on the particular operating point of the generator. Reasons for this dependence on the operating point are, for example, the temperature-variable properties of the exciter winding (resistance and inductance) and the disproportionate nature of the exciting current to the generator current, which is caused by the saturation behavior of the rotor core.
  • a control device for a motor vehicle alternator which is driven by an internal combustion engine and after a rectification of the output voltage generated by it a Batte- invites you.
  • This control device includes a voltage regulator that controls the charging voltage of the battery to a constant value, and a device that gradually increases the generator current of the alternator after turning on an electric load. The increase amount of a control current of a circuit breaker for controlling the excitation current of the alternator to a
  • the increase amount of the control current of the power switch for controlling the exciting current of the alternator is set in accordance with the generator current of the alternator such that when the generator current is large, the amount of increase is increased and lowered with small generator current.
  • the increase amount of the control current of the power switch for controlling the exciting current is set to be proportional to the energization current value before the turning-on of the electric load.
  • the output current of the respective alternator providing a one-time and immediate response to a load being turned on before the activation of the gradual energization control gradually increases the generator current. represents, is kept substantially constant.
  • a method having the features specified in claim 1 and a device having the features specified in claim 5 have the advantage that the choice of the difference by which the duty cycle of the control signal is increased, made depending on the respective operating point becomes.
  • This adaptation of the blind zone to the operating point present in each case leads advantageously to a predictable and clearly defined behavior of the generator, which can be optimized for the respective operating points of the engine. As a result, for example, more complex functions in the control unit for responding to torque changes on the drive train due to the generator can be minimized.
  • FIG. 1 shows a circuit diagram for explaining a device for compensating a break in the output voltage of a motor vehicle generator based on a load connection
  • Figure 3 diagrams for explaining a method according to the invention.
  • FIG. 1 shows a circuit diagram for explaining a device for compensating a break in the output voltage of a motor vehicle generator based on a load connection.
  • the device shown has a generator device 11, the electrical system 12 of the motor vehicle and detector means 13.
  • the generator device 11 comprises a generator controller 1 and a generator unit 10, which provides at its output a DC supply voltage for the electrical system 12 of a motor vehicle.
  • the generator unit 10 has a generator 2 and a rectifier arrangement 9.
  • the generator 2 includes a field winding 5 and not shown phase windings, which are interconnected, for example in the form of a star connection or a delta connection.
  • the generator 2 provides at its phase voltage terminals U, V and W AC voltages available to the downstream rectifier assembly 9 are supplied.
  • a different number of phases or phase voltage connections may also be present.
  • the rectifier assembly 9 includes three branches, each having a series connection of two diodes or other suitable components and associated with another of the phase voltage terminals of the generator.
  • the phase voltage terminal U of the generator 2 is connected to the connection point between the diodes Dl and D4 of the first rectifier branch.
  • the phase voltage terminal V of the generator 2 is connected to a connection point between the diodes D2 and D5 of the second rectifier branch.
  • the phase voltage terminal W of the generator 2 is connected to a connection point between the diodes D3 and D6 of the third rectifier branch.
  • the cathodes of the diodes D4, D5 and D6 are connected together. There, the DC output voltage of the generator unit 10 is provided and to the
  • the anodes of the diodes Dl, D2 and D3 are also connected to each other and are grounded.
  • the phase voltage terminal W of the generator 2 is further connected via a terminal X of the generator controller 1 with the controller control 7 of the generator controller 1 and via a resistor R3 and a ground connection 3 of the generator controller to ground 4 in combination.
  • the generator controller 1 has an operating voltage connection B + and further connections DF, D and X. Furthermore, the generator controller contains a
  • Controller controller 7 which is provided with an evaluation logic.
  • the regulator controller 7 is provided to provide a switching transistor 6 with a PWM drive signal s.
  • the regulator controller 7 is furthermore connected to the operating voltage connection B + and via the ground connection 3 to ground 4. Further, the regulator controller 7 communicates with the terminal X of the generator regulator 1 to receive a phase voltage signal derived from the phase voltage terminal W of the generator 2.
  • the device shown in FIG. 1 has an exciter circuit. This runs from the operating voltage connection B + of the generator controller 1 via the switching transistor 6 of the generator regulator, the DF connection of the generator regulator, the excitation winding 5, the D connection of the generator regulator and the ground connection 3 to ground 4. Between the connections D and DF of the generator regulator 1 either a freewheeling diode 8 is switched or it is used an active freewheel with a switching transistor.
  • the regulator controller 7 which is connected to the operating voltage terminal B + and via the terminal X to the phase voltage terminal W of the generator 2, controls the switch 6 with the control signal s such that an exciting current flows through the excitation winding 5, both from the Be - Tension voltage connection B + present DC voltage as well as temporarily dependent on the her via the terminal X fed phase voltage.
  • the controller control is designed such that it brings about a compensation of the voltage drop on occurrence of such a voltage dip. This occurs as follows: After the load connection has occurred, the controller controller 7 acquires the parameter values of the signals supplied to it by the detector means 13. These signals correspond to parameters which describe the instantaneous operating point of the motor vehicle generator 2, so that the controller controller can determine the instantaneous operating point of the motor vehicle generator from the parameter values supplied to it. These parameters, whose parameter values allow conclusions to be drawn about the instantaneous operating point of the motor vehicle generator, include a rotational speed and a temperature.
  • This speed is the generator speed and / or the engine speed.
  • the temperature is the generator temperature and / or the regulator temperature and / or the engine compartment temperature and / or the ambient temperature.
  • Further parameters describing the instantaneous operating point of the motor vehicle are, for example, the load on the generator and / or the exciter current and / or the duty cycle and / or the battery voltage and / or the generator voltage.
  • the information about the excitation current and the duty cycle are the controller control anyway.
  • the information about further parameters whose parameter values allow conclusions to be drawn about the instantaneous operating point of the motor vehicle generator are supplied to the controller control by the detector means 13.
  • the controller controller If the controller controller has determined from the parameters mentioned the instantaneous operating point of the motor vehicle generator, then it selects an operating point-dependent amount associated with this operating point, by which the instantaneous duty cycle of the control signal s is increased in order to initiate an optimal for this operating point compensation of the voltage drop occurred, and leads in a first step the switching transistor 6, a control signal s with the increased duty cycle to. As a result, the excitation current flowing through the field winding 5 is also increased, which in turn leads to an increase in the output voltage of the generator device.
  • the controller controller 7 addresses a memory 14 in which a map is stored, in which a plurality of operating points is assigned a difference amount.
  • the controller controller generates the control signal s in a second step such that the Ausregelieri is limited and thus performs a load response function.
  • the instantaneous operating point of the motor vehicle generator is first determined and the duty cycle of the control signal s fed to the switching transistor T6 is increased by an operating point-dependent difference. Thereafter, in a second step, a limitation of the Ausregel york in the sense of a load response function.
  • FIG. 2 shows diagrams for explaining a known method.
  • FIG. 2 a shows the duty cycle of the control signal s over time
  • FIG. 2 b the load L of the generator over time.
  • a first load is switched on and at a time t 2 a second load is switched on. Both load connections cause a collapse of the output voltage provided by the generator device.
  • the portion of the switched-on load which is rapidly regulated by the connection of the load at the time t1 via the blind zone, that is to say the load. before the load response function starts, it has the value ⁇ 1 and the quickly regulated part of the switched-on load has the value ⁇ 2, where ⁇ 1 is greater than ⁇ 2. This is due to the fact that the generator is at a different operating point at time t 1 than at time t 2.
  • FIG. 3 shows diagrams for explaining a method according to the invention.
  • the duty ratio of the control signal s is plotted against time
  • the load L of the generator over time At a time t 1, a first load is switched on and at a time t 2 a second load is switched on. Both load connections cause a collapse of the output voltage provided by the generator device. From the figure 3a it can be seen that at the time tl, the duty cycle of
  • Control signal s in a first step is suddenly increased by an amount Bl and then slowly increases in a second step in the sense of a load response function to correct the voltage dip. Thereafter, the duty cycle remains unchanged until time t2.
  • the duty cycle of the control signal s in a first step is suddenly increased by the amount B2 and then slowly further increased in a second step in the sense of a load response function to compensate for the further voltage dip.
  • the amount by which the duty cycle of the control signal s is increased abruptly, ie the blind zone, is different for the two load connections.
  • a blind zone B 1 is used; at the time of load connection, a blind zone B 2 is used at time t 2, wherein B 1 is greater than B 2 in the illustrated embodiment.
  • the choice of blind ne has been made as a function of the operating point present at the time of the respective load connection, as has been explained above in connection with FIG.
  • the duration of the load response function, which continues until the respective voltage dip is regulated, is different also in this embodiment.
  • the rapidly regulated portion of the switched-on load at time t 1 and the rapidly regulated portion of the switched-on load at time t 2 each have the value ⁇ , that is to say coincide.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

L'invention concerne un procédé pour compenser une chute de la tension de sortie d'une génératrice de véhicule automobile au moyen d'un régulateur de génératrice qui fournit un signal de commande présentant un facteur d'utilisation et augmentant le courant d'excitation de la génératrice de véhicule automobile, cette chute étant due à la mise en circuit d'une charge ou à une variation de vitesse. Après l'apparition de la chute de tension, le facteur d'utilisation du signal de commande est augmenté d'une valeur différentielle au cours d'une première étape, puis la vitesse de régulation est limitée au cours d'une deuxième étape consécutive. Après l'apparition de la chute de tension, des paramètres représentant le point de fonctionnement instantané de la génératrice de véhicule automobile sont acquis et la valeur différentielle est réglée au cours de la première étape en fonction du point de fonctionnement.
EP11724413.7A 2010-06-11 2011-06-06 Procédé et dispositif pour compenser une chute de la tension de sortie d'une génératrice de véhicule automobile Withdrawn EP2583367A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010029967.7A DE102010029967B4 (de) 2010-06-11 2010-06-11 Verfahren und Vorrichtung zum Ausgleich eines Einbruchs der Ausgangsspannung eines Kraftfahrzeuggenerators
PCT/EP2011/059264 WO2011154346A2 (fr) 2010-06-11 2011-06-06 Procédé et dispositif pour compenser une chute de la tension de sortie d'une génératrice de véhicule automobile

Publications (1)

Publication Number Publication Date
EP2583367A2 true EP2583367A2 (fr) 2013-04-24

Family

ID=44626874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11724413.7A Withdrawn EP2583367A2 (fr) 2010-06-11 2011-06-06 Procédé et dispositif pour compenser une chute de la tension de sortie d'une génératrice de véhicule automobile

Country Status (6)

Country Link
US (1) US8963509B2 (fr)
EP (1) EP2583367A2 (fr)
JP (1) JP5832529B2 (fr)
CN (1) CN102918744B (fr)
DE (1) DE102010029967B4 (fr)
WO (1) WO2011154346A2 (fr)

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DE102008011224A1 (de) * 2008-02-26 2009-08-27 Robert Bosch Gmbh Generatorvorrichtung mit Überspannungsüberwachung
DE102013207135A1 (de) * 2013-04-19 2014-10-23 Bayerische Motoren Werke Aktiengesellschaft Hochfahren des Erregerstroms eines an ein Bordnetz eines Kraftfahrzeugs angeschlossenen Mehrphasenwechselstrom-Generators beim Aktivieren des Generators
DE102013219685A1 (de) * 2013-09-30 2015-04-02 Robert Bosch Gmbh Verfahren zum Betreiben einer Energieversorgungseinheit für ein Bordnetz eines Kraftfahrzeugs
JP6358336B2 (ja) * 2014-10-31 2018-07-18 ソニー株式会社 無線通信装置及び無線通信方法
DE102014222337B3 (de) 2014-10-31 2016-01-21 Continental Teves Ag & Co. Ohg Verfahren und Vorrichtung zur Steuerung eines fremderregten elektrischen Generators in einem Bordnetz eines Kraftfahrzeuges
US10882407B2 (en) * 2018-06-21 2021-01-05 Bae Systems Controls Inc. Low engine speed electric accessory load regulation on moving vehicles
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DE102019203927A1 (de) * 2019-03-22 2020-09-24 Robert Bosch Gmbh Verfahren zur Bordnetzdiagnostik
CN112994555A (zh) * 2021-03-30 2021-06-18 江苏大学 六相永磁同步发电机占空比合成矢量低复杂度模型预测直接功率控制方法

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Also Published As

Publication number Publication date
WO2011154346A3 (fr) 2012-09-13
JP5832529B2 (ja) 2015-12-16
US20130141055A1 (en) 2013-06-06
CN102918744A (zh) 2013-02-06
CN102918744B (zh) 2016-03-23
WO2011154346A2 (fr) 2011-12-15
DE102010029967A1 (de) 2011-12-15
DE102010029967B4 (de) 2025-11-06
US8963509B2 (en) 2015-02-24
JP2013528347A (ja) 2013-07-08

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