DE102007050031B3 - Control system for solar systems - Google Patents
Control system for solar systems Download PDFInfo
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- DE102007050031B3 DE102007050031B3 DE102007050031A DE102007050031A DE102007050031B3 DE 102007050031 B3 DE102007050031 B3 DE 102007050031B3 DE 102007050031 A DE102007050031 A DE 102007050031A DE 102007050031 A DE102007050031 A DE 102007050031A DE 102007050031 B3 DE102007050031 B3 DE 102007050031B3
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- control
- drive
- control system
- unit
- battery unit
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- 238000012806 monitoring device Methods 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/10—Control of position or direction without using feedback
- G05D3/105—Solar tracker
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/20—Arrangements for controlling solar heat collectors for tracking
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/20—Systems characterised by their energy storage means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
Die Erfindung betrifft ein Steuerungssystem für Solaranlagen mit einem um mindestens eine Schwenkachse verschwenkbaren Solarmodul, mit einer Antriebseinrichtung enthaltend eine dem Solarmodul zugeordnete Antriebseinheit zum sonnenstandsabhängigen Nachführen des Solarmoduls und eine Ansteuereinheit zum Ansteuern der Antriebseinheit, wobei eine Mehrzahl von jeweils einen Wechselrichter umfassende Ansteuereinheiten und/oder eine Mehrzahl von Antriebseinheiten mittels einer gemeinsamen Batterieeinheit (8) mit elektrischer Energie versorgt sind, wobei die Batterieeinheit im Normalbetrieb mittels eines zwischen dem Stromversorgungsnetz und der Batterieeinheit angeordneten Ladegeräts aufladbar ist.The invention relates to a control system for solar systems with a solar module pivotable about at least one pivot axis, comprising a drive unit for a solar module associated drive unit for sonnenstandsabhängigen tracking of the solar module and a drive unit for driving the drive unit, wherein a plurality of each comprising an inverter drive units and / or a plurality of drive units by means of a common battery unit (8) are supplied with electrical energy, wherein the battery unit is rechargeable in normal operation by means of a charging device arranged between the power supply network and the battery unit.
Description
Die Erfindung betrifft ein Steuerungssystem für Solaranlagen mit einer Mehrzahl von um mindestens eine Schwenkachse verschwenkbaren Solarmodulen.The The invention relates to a control system for solar systems with a plurality of at least one pivot axis pivotable solar modules.
Aus
der
Die Antriebseinheit kann beispielsweise einen Asynchronmotor umfassen, der relativ robust und zuverlässig ausgelegt ist. Allerdings werden diese Asynchronmotoren stets nur mit einer einzigen Drehzahl eingesetzt, so dass im Notfallbetrieb, also bei Auftreten von Orkan- und Sturmböen, ein Absenken der Solarmodule relativ lange dauert, was zu einer Zerstörung derselben führen kann. Darüber hinaus sind relativ aufwändige Notstromaggregate erforderlich, damit bei einem Stromausfall die Solarmodule in eine horizontale Sicherheitsstellung verschwenkt werden können.The Drive unit may comprise, for example, an asynchronous motor, the relatively robust and reliable is designed. However, these asynchronous motors are always only used at a single speed so that in emergency operation, So when hurricanes and storm gusts, a lowering of the solar modules takes a relatively long time, which can lead to their destruction. About that In addition, are relatively expensive Emergency generators required so that in case of power failure Solar modules swiveled into a horizontal safety position can be.
Aus
der
Aufgabe der vorliegenden Erfindung ist es daher, ein Steuerungssystem für Solaranlagen derart weiterzubilden, dass der Steuerungsaufwand zum Betreiben einer großen Anzahl von Solarmodulen, insbesondere im Notfallbetrieb, verringert wird.task The present invention is therefore a control system for solar systems in such a way that the control effort to operate a big one Number of solar modules, especially in emergency mode, reduced becomes.
Zur Lösung dieser Aufgabe weist die Erfindung die Merkmale des Patentanspruchs 1 auf.to solution This object of the invention, the features of the claim 1 on.
Der besondere Vorteil der Erfindung besteht darin, dass durch Parallelschaltung eines Ladegerätes einerseits und einer Batterieeinheit andererseits eine zuverlässige und langzeitstabile Stromversorgung einer Vielzahl von Antriebseinheiten bzw. Ansteuereinheiten gewährleistet ist. Insbesondere ist hierdurch die Abzweigung eines geringen Ladestroms parallel zur Energieerzeugung durch das Solarmodul möglich. Ein Umschalten des Steuerungssystems dahingehend, dass im Normalbetrieb die Ansteuereinheiten bzw. Antriebseinheiten an dem Stromversorgungsnetz und in einem Notfallbetrieb an ein Notstromaggregat angeschlossen sind, ist nicht erforderlich. Nach der Erfindung besteht unabhängig von der Betriebsart (Normalbetrieb, Notfallbetrieb) stets eine galvanische Verbindung zwischen der Batterieeinheit und dem Ladegerät. Im Notfallbetrieb, beispielsweise bei Ausfall des Stromversorgungsnetzes, kann die Batterieeinheit die für den Weiterbetrieb der Solarmodule erforderliche Betriebsspannung vorhalten. Dadurch, dass die Batterieeinheit in vorgegebenen Ladezyklen quasi kontinuierlich mittels des Ladegerätes aufgeladen wird, wird die Abnahme von relativ teuren Stromspitzen bei den entsprechenden Energieversorgungsunternehmen vermieden. Hierdurch können Kosten reduziert werden.Of the particular advantage of the invention is that by parallel connection a charger on the one hand and a battery unit on the other hand a reliable and Long-term stable power supply of a variety of drive units or control units guaranteed is. In particular, this is the diversion of a low charging current parallel to the generation of energy by the solar module possible. One Switching the control system to the effect that in normal operation the drive units or drive units on the power grid and connected to an emergency generator in an emergency mode are not required. According to the invention is independent of the operating mode (normal operation, emergency operation) always a galvanic Connection between the battery unit and the charger. In emergency mode, For example, in case of failure of the power supply network, the Battery unit for the continued operation of the solar modules required operating voltage hold. Characterized in that the battery unit in predetermined charging cycles is charged almost continuously by means of the charger, the Decrease of relatively expensive power peaks at the corresponding power companies avoided. This allows Costs are reduced.
Nach einer bevorzugten Ausführungsform der Erfindung weist das Ladegerät eine Steuerung auf, so dass die Batterieeinheit über lang andauernde Ladezyklen aufladbar ist. Vorteilhaft fließt hierbei ein relativ niedriger Ladestrom, so dass Stromabnahmespitzen vermieden werden können.To a preferred embodiment of Invention has the charger a control on, allowing the battery unit over long charging cycles is rechargeable. Advantageously flows this is a relatively low charging current, so that current decrease peaks can be avoided.
Nach einer bevorzugten Ausführungsform der Erfindung ist die Steuerung des Ladegerätes derart ausgebildet, dass die von der Batterieeinheit abgegebene Batteriespannung mit einem vorgegeben Schwellwert verglichen wird. Ist die Batteriespannung gleich oder höher als der Schwellwert wird die Batterieeinheit nicht geladen. Ist die Batteriespannung kleiner als der Schwellwert, wird die Batterieeinheit geladen. Durch Wahl eines relativ hohen Schwellwertes wird eine Steuerung ermöglicht, bei der die Ladezyklen relativ lang und der Ladestrom relativ klein ist. Hierdurch können unerwünschte Stromabnahmespitzen vermieden werden.To a preferred embodiment of Invention, the control of the charger is designed such that the output from the battery unit battery voltage with a predetermined threshold value is compared. Is the battery voltage equal or higher the battery unit is not charged as the threshold. is the battery voltage is less than the threshold, the battery unit becomes loaded. By choosing a relatively high threshold, a Allows control, in which the charging cycles are relatively long and the charging current is relatively small is. This allows undesirable Stromabnahmespitzen be avoided.
Nach einer Weiterbildung der Erfindung ist ein dezentrales Steuermodul vorgesehen, das über ein Bussystem mit den jeweils den Solarmodulen zugeordneten Ansteuereinheiten verbunden ist. Hierdurch lässt sich der Ansteuerungsaufwand reduzieren. Vorteilhaft erfolgt eine dezentrale Ansteuerung der Anzahl von Solarmodulen, wobei durch das Bussystem insbesondere der Verdrahtungsaufwand reduziert werden kann. Die Effektivität der Ansteuerung kann verbessert werden, da ein einziges dezentrales Steuermodul für eine Mehrzahl von Ansteuereinheiten vorgesehen ist.To a development of the invention is a decentralized control module provided that over one Bus system with each of the solar modules associated drive units connected is. This leaves reduce the driving effort. Advantageously, a decentralized control of the number of solar modules, by the bus system in particular the wiring costs are reduced can. The effectiveness the control can be improved because a single decentralized control module for one A plurality of drive units is provided.
Nach einer bevorzugten Ausführungsform ist das Bussystem hierarchisch aufgebaut, wobei das dezentrale Steuermodul als Bus-Master Steuersignale an die Mehrzahl als Bus-Slave ausgebildete Ansteuereinheiten sendet.According to a preferred embodiment, the bus system is hierarchically structured, wherein the decentralized control module as a bus master sends control signals to the plurality formed as a bus slave drive units.
Nach einer bevorzugten Ausführungsform der Erfindung ist das dezentrale Steuermodul mit einer Anzahl von Sensoreinheiten über das Bussystem verbunden, so dass die an die jeweiligen Ansteuereinheiten zu sendenden Steuersignale in Abhängigkeit von den die aktuellen Umgebungsbedingungen enthaltenen Sensordaten der Sensoreinheit übertragen werden. Vorteilhaft kann der Steuerungsaufwand dadurch reduziert werden, dass das dezentrale Steuermodul lediglich einer einzigen Sensoreinheit zugeordnet ist. Diese Sensoreinheit ermittelt die Sensordaten für ein in einer Solareinheit zusammengefassten Sensormodule, die den gleichen Umgebungsbedingungen ausgesetzt sind. Zur Bestimmung der Umgebungsbedingungen einer Sensoreinheit ist lediglich eine Sensoreinheit des gleichen Typs erforderlich. Somit können beispielsweise Solarmodule, für die die gleichen Windverhältnisse gelten, demselben dezentralen Steuermodul mit einer einzigen Windmesser-Sensoreinheit zugeordnet werden.To a preferred embodiment of Invention is the distributed control module with a number of sensor units over the Bus system connected, so that to the respective control units to be sent control signals depending on the current Transmitted ambient conditions sensor data of the sensor unit become. Advantageously, the control effort can be reduced be that the decentralized control module only a single Sensor unit is assigned. This sensor unit determines the Sensor data for a combined in a solar unit sensor modules, the are exposed to the same ambient conditions. To determine the environmental conditions a sensor unit is merely a sensor unit of the same Type required. Thus, you can for example, solar modules, for the same wind conditions the same distributed control module with a single anemometer sensor unit be assigned.
Nach einer bevorzugten Ausführungsform der Erfindung ist das dezentrale Steuermodul über ein Datennetz mit einer ortsfern angeordneten zentralen Steuer-/Überwachungseinrichtung verbunden. Die zentrale Steuer-/Überawachungseinrichtung ermöglicht eine zentrale Ansteuerung einer Mehrzahl von Solareinheiten, die jeweils über ein einziges dezentrales Steuermodul und eine Mehrzahl von Solarmodulen verfügen. Zum anderen können hierdurch die Mehrzahl von Solareinheiten zentral überwacht werden.To a preferred embodiment of Invention is the decentralized control module via a data network with a remote central control / monitoring device connected. The Central control / monitoring device allows a central control of a plurality of solar units, the each over a single distributed control module and a plurality of solar modules feature. For another As a result, the majority of solar units are monitored centrally.
Nach einer bevorzugten Ausführungsform der Erfindung weist die Antriebseinheit einen dreiphasigen Asynchronmotor auf, der robust und langlebig ist. Der drehzahlregelbare Asynchronmotor ermöglicht in Verbindung mit der Ansteuerung, dass relativ schnell bei Auftreten von unzulässig hohen Windstärken eine Absenkung der Solarmodule aus einer Arbeitsstellung in eine horizontale Sicherheitsstellung er möglicht wird, ohne dass ein unerwünschter Ausfall oder Zerstörung der Solarmodule eintreten kann.To a preferred embodiment of Invention, the drive unit has a three-phase asynchronous motor that is durable and durable. The variable speed asynchronous motor allows in conjunction with the drive that is relatively fast on occurrence from inadmissible high wind speeds a lowering of the solar modules from a working position into a horizontal safety position is possible without a undesirable Failure or destruction the solar modules can enter.
Nach einer bevorzugten Ausführungsform der Erfindung werden die Ansteuereinheiten mittels einer aufladbaren Batterieeinheit gespeist, die vorzugsweise eine solche Kapazität aufweist, dass bei Ausfall des Stromnetzes ein mehrtägiger Betrieb der Solarmodule einer Solareinheit gewährleistet ist. Vorteilhaft kann somit die Batterieeinheit zugleich als Notstromaggregat für die Solareinheit dienen.To a preferred embodiment of Invention, the drive units by means of a rechargeable Battery unit fed, which preferably has such a capacity, that in case of failure of the power grid, a multi-day operation of the solar modules a solar unit guaranteed is. Advantageously, thus the battery unit at the same time as an emergency generator for the Serve solar unit.
Weitere Vorteile der Erfindung ergeben sich aus den weiteren Unteransprüchen.Further Advantages of the invention will become apparent from the other dependent claims.
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert.One embodiment The invention will be explained in more detail with reference to the drawing.
Die Zeichnung zeigt:The Drawing shows:
Figur ein Blockschaltbild eines erfindungsgemäßen Steuerungssystems für Solaranlagen.figure a block diagram of a control system for solar systems according to the invention.
Ein erfindungsgemäßes Steuerungssystem für Solaranlagen ermöglicht als ganzheitliches System eine verbesserte Wirtschaftlichkeit und einen höheren Nutzungsgrad von Solaranlagen.One Inventive control system for solar systems allows as a holistic system an improved economy and a higher one Degree of utilization of solar systems.
Eine
Solaranlage besteht aus einer Mehrzahl von Solareinheiten
Die
Solareinheit
Die
Solarmodule
Die
Antriebseinheit
Den
Antriebseinheiten
Der
Stromrichter
Das
Ladegerät
Das
Ladegerät
Die
Antriebseinrichtung
Das
dezentrale Steuermodul
Das
dezentrale Steuermodul
Das
dezentrale Steuermodul
Beispielsweise
kann ein Datentransfer von dem dezentralen Steuermodul
Vorzugsweise
weist eine Solaranlage eine Mehrzahl von Solareinheiten
Nach
einer nicht dargestellten alternativen Ausführungsform kann die Batterieeinheit
Claims (13)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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DE102007050031A DE102007050031B3 (en) | 2007-10-17 | 2007-10-17 | Control system for solar systems |
PCT/DE2008/001684 WO2009049603A2 (en) | 2007-10-17 | 2008-10-17 | Control system for solar installations |
CN2008801119203A CN101970951A (en) | 2007-10-17 | 2008-10-17 | Control system for solar installations |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102007050031A DE102007050031B3 (en) | 2007-10-17 | 2007-10-17 | Control system for solar systems |
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DE102007050031B3 true DE102007050031B3 (en) | 2009-04-16 |
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DE102007050031A Expired - Fee Related DE102007050031B3 (en) | 2007-10-17 | 2007-10-17 | Control system for solar systems |
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CN (1) | CN101970951A (en) |
DE (1) | DE102007050031B3 (en) |
WO (1) | WO2009049603A2 (en) |
Cited By (59)
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DE102008044683A1 (en) * | 2008-08-28 | 2010-03-25 | Walcher Meßtechnik GmbH | Photovoltaic system for use at e.g. building wall, has master drives connected together by data bus line, where one of drives is operated as super master drive providing set value data for master drive and collects measured data |
DE102009021975A1 (en) * | 2009-05-19 | 2010-12-02 | Hista Elektro-Anlagenbau Gmbh | Solar altitude track controlling system for solar collector used for recovering energy from solar radiation, has control units delivering address commands and/or control information to other control units via data bus |
WO2011033027A2 (en) | 2009-09-17 | 2011-03-24 | Aeg Power Solutions B.V. | Circuit assembly having a converter part comprising a central control unit |
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DE202010008439U1 (en) | 2010-09-02 | 2011-12-07 | Reis Group Holding Gmbh & Co. Kg | System for tracking sunlight-dependent solar cell modules |
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CN101970951A (en) | 2011-02-09 |
WO2009049603A2 (en) | 2009-04-23 |
WO2009049603A3 (en) | 2010-08-12 |
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