WO2012163313A1 - Dispositif d'alimentation électrique de consommateurs électriques - Google Patents

Dispositif d'alimentation électrique de consommateurs électriques Download PDF

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Publication number
WO2012163313A1
WO2012163313A1 PCT/DE2011/001183 DE2011001183W WO2012163313A1 WO 2012163313 A1 WO2012163313 A1 WO 2012163313A1 DE 2011001183 W DE2011001183 W DE 2011001183W WO 2012163313 A1 WO2012163313 A1 WO 2012163313A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical
switching
power supply
electrical load
unit
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/DE2011/001183
Other languages
German (de)
English (en)
Inventor
Thomas Henke
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.)
Hanning Elektro Werke GmbH and Co KG
Original Assignee
Hanning Elektro Werke GmbH and Co KG
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 Hanning Elektro Werke GmbH and Co KG filed Critical Hanning Elektro Werke GmbH and Co KG
Priority to PCT/DE2011/001183 priority Critical patent/WO2012163313A1/fr
Publication of WO2012163313A1 publication Critical patent/WO2012163313A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/007—Arrangements for selectively connecting one or more loads to one or more power sources or power lines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/10—Photovoltaic [PV]

Definitions

  • the invention relates to a device for the electrical power supply of electrical consumers, in particular blower drives in animal stables, with a switching unit, via which the electrical load with a photovoltaic device or with a mains power supply device is connectable.
  • EP 0 535 322 A1 discloses a device for the electrical power supply of electrical consumers, in which a rechargeable battery is used to charge an accumulator either from a photovoltaic device or from a mains power supply device.
  • the accumulator is used to feed DC motors or DC actuated actuators.
  • the switching unit comprises a charge controller which, depending on the state of charge of the accumulator, connects the same to the photovoltaic device and the mains power supply device and thus provides charging.
  • the object of the present invention is to develop a device for the electrical power supply of electrical consumers in such a way that the provision of tion of electrical energy for the electrical load using direct Fotovoltaikein- device is improved.
  • the invention in conjunction with the preamble of claim 1, characterized in that the switching unit is operatively connected to an input signal for the electrical load converter unit and that the switching unit comprises switching means by which the electrical load in a preferred switching state of Switching unit is fed exclusively by the Fotovoltaikeinrich- device and in a subordinate switching state exclusively from the mains power supply device.
  • the particular advantage of the device according to the invention is that electrical consumers can be fed virtually directly with electrical energy from a photovoltaic device.
  • the basic idea of the invention is to link or connect a switching unit to a converter unit in such a way that the electrical load is always in a preferred switching state with electrical energy from the photovoltaic device and in a subordinate switching state in which the photovoltaic device does not have the required electrical energy Is supplied with electrical energy from a mains power supply device.
  • the inverter unit causes the input signal of the electrical consumer has the required waveform for him.
  • the invention thus enables an efficient, secure and electrical power supply adapted to the requirements of the electrical consumer with regard to the signal shape.
  • the switching unit has a control device which controls the switching means in response to electrical variables provided by the photovoltaic device and / or the mains power supply and / or in dependence on usage-related request data of the electrical load permanent, safe and energy-saving operation of the electrical consumer is ensured.
  • the control device serves, on the one hand, to control the flow of energy, for which purpose it acts on the switching unit, and, on the other hand, to control the signal form, in which case it acts on the converter unit.
  • the control device has a control routine by means of which an "intelligent" switching of the input signal for the electrical load between the photovoltaic device and the mains power supply device is ensured Threshold is a changeover or a ne diminished energy supply makes.
  • Threshold is a changeover or a ne diminished energy supply makes.
  • a switchover or presetting of threshold values in the control device takes place as a function of a usage-dependent power profile of the electrical load.
  • the electrical load is a drive with an electric motor
  • the usage-dependent power profile can be specified by a defined speed range, within which the intended function of the electric motor is ensured. This ensures that switching to a mains current operation is not performed when a defined permissible speed or power range is present, as long as the energy generated by the photovoltaic modules is sufficient for off-grid operation.
  • the control device has a microcontroller with a program feed, in which the activation routine is stored.
  • the microcontroller is connected to a rectifier and switching means and an inverter of the converter unit.
  • an intermediate circuit of the converter unit is provided with a buffer capacitor, so that energy can be temporarily stored to a limited extent. In this way, for example, an energy saving reduction of the photovoltaic modules which brings about a shadowing of a solar pendulum of the photovoltaic device can be compensated.
  • the buffer capacitor can also be supplemented / combined with an accumulator in order to increase the energy storage.
  • the converter unit has, on the one hand, an AC voltage input connection and, on the other hand, a DC input connection.
  • an AC voltage input connection and, on the other hand, a DC input connection.
  • FIG. 1 shows a schematic block diagram of a device according to the invention
  • Figure 2 is a time course of switching states of a
  • a device according to the invention for the electrical power supply of electrical consumers can be used in particular in drives in animal stables. This blower drives for ventilation of the animal housing are fed with electrical energy.
  • other power converter operated plants such as conveyor systems, agitators, fans and pumps for example biogas plants can be operated with the device according to the invention.
  • the invention can be used to power swimming pool pumps and air conditioners.
  • An inventive device 1 for electrical energy supply of electrical consumers consists essentially of components of a converter unit 2 and switching unit. 3
  • the device 1 can be designed as a compact structural unit which has two input terminals, namely a DC input terminal 4 and an AC input terminal 5.
  • the AC input terminal 5 is connectable to a mains power supply 8 which is connected to a low voltage network of an electrical supply system.
  • the device 1 has at least one output connection 9, to which an electrical consumer 10 can be connected in each case.
  • the electrical consumer 10 is formed by a fan drive with a three-phase three-phase motor 11 and a downstream fan wheel 12.
  • the device 1 has two output connections 9 for two different blower drives in one or different house spaces.
  • even more power converter operated drives can be connected.
  • the converter unit 2 is designed as a frequency converter unit and has a rectifier 13 connected to the AC voltage input terminal 5, an intermediate circuit 14 and a number of inverters 15 which are each connected to the output terminal 9 on the output side.
  • the control of the rectifier 13 and the inverter 15 is effected by a control device 16.
  • the switching unit 3 is formed by a switching device 17 and the same controlling control device 16.
  • the switching device 17 has switching means, such as switching relay ', by means of which a first power supply branch 18 and a second power supply branch 19 can be switched so that the intermediate circuit 14th either energy via the first power supply branch 18 from the photovoltaic device 6 or is supplied via the second power supply branch 19 from the mains power supply device 8.
  • the control device 16 which preferably has a microcontroller and a program memory, has a control routine which, depending on line-connected variables of the photovoltaic device 6 and / or the mains power supply device 8 and / or depending on usage-related request data of the electrical load 10, the switching device 17 controls. It can be done in a bandwidth operating point setting, wherein the bandwidth exceeded by reaching predetermined threshold values are detected by corresponding electrical variables to be monitored.
  • the device 1 is in a preferred switching state Z B , provided that the photovoltaic device 6 can provide the electrical energy to the required extent.
  • Switching to a subordinate switching state Z N takes place only when the predetermined bandwidth is exceeded, for example when the supply voltage U Ph of the photovoltaic device 6 falls below a predetermined threshold value S 1 .
  • This threshold value S 1 depends, in particular, on the usage-dependent power profile of the electrical load 10. In order to maintain a minimum ventilation of the stable space, the threshold value S 1 may correspond to a minimum speed of the blower drive 10 which is not unobjectionable. may be exceeded.
  • the switching device 17 is controlled by the control device 16 in such a way that switching from the first power supply branch 18 to the second power supply branch 19 occurs. Be it now lies on the input side of the device 1, the mains voltage U mains, which is adjusted or by the control means 16 to the fan drive 10 formed such that an alternating voltage U E at the output 9 and operating the blower drive 10 with a power rating can.
  • the control device 16 is designed such that it can monitor the state of the DC input terminal 4. If it has determined at the time t S2 that the supply voltage U ph of the photovoltaic device 6 has exceeded the threshold value Si, a control signal is sent to the switching device 17 in such a way that the first current supply branch 18 is switched from the second current supply branch 19. The blower drive 10 is now fed again by the photovoltaic device 6.
  • the threshold value S 1 can be below the voltage value U ph if the user-dependent power profile, ie the use of the blower drive 10 for the corresponding field of use, can be operated at a reduced speed, without adversely affecting livestock conditions as a result.
  • the threshold value S 1 can also coincide with the rated voltage U Ph . It can be seen from FIG. 2 that a short-term reduction of the photovoltaic voltage U ph or the rotational speed n M0T of the electric motor 11 below the nominal rotational speed n "which can occur as a result of shading 20 of the solar panel 7 is acceptable, without a switchover to the second power supply branch 19 is made. Only when falling below the threshold value S 1 is a switch.
  • control routine can also be designed so that a changeover is made dependent not only on the level of the supply voltage U ph , but also on a temporal component.
  • the device 1 thus enables the fan drives 10 to be operated in a defined speed range, which is dependent on the requirement profile of the electrical load 10.
  • the intermediate circuit 14 has a buffer capacitor 21 which is able to temporarily store electrical energy, so that despite short-term shading 20 of the solar panel 7, the provision of the desired nominal voltage at the input of the blower drive 10 is ensured.
  • the input voltage U E of the blower drive 10 in the preferred switching state Z B coincides with the supply voltage u ph of the photovoltaic device 6 and in the subordinate switching state Z N with the supply voltage U network of the mains power supply device. 8. Only in the time interval t a caused by the shading 20 is the input voltage U E less than the predetermined rated voltage U ⁇ . According to an alternative embodiment, it may be provided that the same or the same upstream inverter 15 are connected to the control device 16 via a bus system (field bus system) in the case of a plurality of electrical consumers 10.
  • a bus system field bus system
  • the control device 16 is arranged at a central location remote from the electrical loads 10 and the inverters 15 or the switching device 17.
  • the control of a wide variety of electrical consumers in an overall system can thus be coordinated at a central location.
  • the drives or the electric motors 11 are each assigned a sensor 22, by means of which the speed of the electric motor 11 can be determined.
  • the sensors 22 are connected to the control device 16 and provide the same data, so that in the control device 16, the speed or power demand of the electric motors 11 can be determined.
  • the buffer capacitor 21 may be associated with an accumulator, so that the storage capacity of the buffer capacitor 21 can be extended.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

L'invention concerne un dispositif pour l'alimentation électrique de consommateurs électriques, en particulier de moteurs de ventilateurs dans des étables pour animaux, ce dispositif d'alimentation comprenant un bloc de commutation permettant de raccorder le consommateur électrique à une installation photovoltaïque ou à un dispositif d'alimentation par secteur, le bloc de commutation étant relié fonctionnellement à un bloc de conversion qui produit un signal d'entrée pour le consommateur électrique, et le bloc de commutation comprenant des moyens de commutation par lesquels, dans un état de commutation préférentiel du bloc de commutation, le consommateur électrique est alimenté exclusivement par l'installation photovoltaïque, et dans un état de commutation secondaire du bloc de commutation, le consommateur électrique est alimenté par le secteur.
PCT/DE2011/001183 2011-06-01 2011-06-01 Dispositif d'alimentation électrique de consommateurs électriques Ceased WO2012163313A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/DE2011/001183 WO2012163313A1 (fr) 2011-06-01 2011-06-01 Dispositif d'alimentation électrique de consommateurs électriques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2011/001183 WO2012163313A1 (fr) 2011-06-01 2011-06-01 Dispositif d'alimentation électrique de consommateurs électriques

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WO2012163313A1 true WO2012163313A1 (fr) 2012-12-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140366921A1 (en) * 2013-03-19 2014-12-18 Hanning Elektro-Werke Gmbh & Co. Kg Control unit for a cooking device
WO2016023952A1 (fr) * 2014-08-12 2016-02-18 PROMESS Gesellschaft für Montage- und Prüfsysteme mbH Climatiseur destiné à fonctionner avec une installation solaire génératrice de courant, système de climatisation fonctionnant à l'énergie solaire et procédé pour faire fonctionner le climatiseur à l'aide de l'énergie solaire
CN106594998A (zh) * 2016-12-27 2017-04-26 天津市创辉津控科技发展有限公司 一种全自动空调机组管控系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0535322A1 (fr) 1991-09-28 1993-04-07 Siegenia-Frank Kg Dispositif pour l'alimentation en énergie électrique pour un dissipateur à tension minimale de courant continu
DE4433428A1 (de) * 1994-09-20 1996-03-21 Inst Luft Kaeltetech Gem Gmbh Schaltungsanordnung und Verfahren zur Energieversorgung von Klimageräten
DE10057113A1 (de) * 2000-11-16 2002-05-29 K & G Pneumatik Gmbh Energieversorgungsanordnung für Rauch- und Wärmeabzugsanlagen mit elektrischen Antrieben
WO2004045044A1 (fr) * 2002-11-14 2004-05-27 Walter Cassani Installation d'exploitation de sources d'energies renouvelables en association avec des sources d'energie traditinonnelles, notamment le chauffage et le refroidissement d'immeubles d'habitation
DE20023570U1 (de) * 2000-07-05 2004-11-25 Rational Ag Gargerät mit Spannungs-, Phasen- und/oder Frequenzumwandler
US20070273211A1 (en) * 2006-05-23 2007-11-29 Wang Kon-King M System and method for controlling power flow in a power system
WO2009052908A2 (fr) * 2007-10-22 2009-04-30 Mario La Rosa Système de générateur photovoltaïque

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0535322A1 (fr) 1991-09-28 1993-04-07 Siegenia-Frank Kg Dispositif pour l'alimentation en énergie électrique pour un dissipateur à tension minimale de courant continu
DE4433428A1 (de) * 1994-09-20 1996-03-21 Inst Luft Kaeltetech Gem Gmbh Schaltungsanordnung und Verfahren zur Energieversorgung von Klimageräten
DE20023570U1 (de) * 2000-07-05 2004-11-25 Rational Ag Gargerät mit Spannungs-, Phasen- und/oder Frequenzumwandler
DE10057113A1 (de) * 2000-11-16 2002-05-29 K & G Pneumatik Gmbh Energieversorgungsanordnung für Rauch- und Wärmeabzugsanlagen mit elektrischen Antrieben
WO2004045044A1 (fr) * 2002-11-14 2004-05-27 Walter Cassani Installation d'exploitation de sources d'energies renouvelables en association avec des sources d'energie traditinonnelles, notamment le chauffage et le refroidissement d'immeubles d'habitation
US20070273211A1 (en) * 2006-05-23 2007-11-29 Wang Kon-King M System and method for controlling power flow in a power system
WO2009052908A2 (fr) * 2007-10-22 2009-04-30 Mario La Rosa Système de générateur photovoltaïque

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140366921A1 (en) * 2013-03-19 2014-12-18 Hanning Elektro-Werke Gmbh & Co. Kg Control unit for a cooking device
WO2016023952A1 (fr) * 2014-08-12 2016-02-18 PROMESS Gesellschaft für Montage- und Prüfsysteme mbH Climatiseur destiné à fonctionner avec une installation solaire génératrice de courant, système de climatisation fonctionnant à l'énergie solaire et procédé pour faire fonctionner le climatiseur à l'aide de l'énergie solaire
CN106594998A (zh) * 2016-12-27 2017-04-26 天津市创辉津控科技发展有限公司 一种全自动空调机组管控系统

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