ES2403363A2 - System of regulation and control of the electrical power generated in solar photovoltaic installations by devices of hiding solar plates to solar radiation. (Machine-translation by Google Translate, not legally binding) - Google Patents

System of regulation and control of the electrical power generated in solar photovoltaic installations by devices of hiding solar plates to solar radiation. (Machine-translation by Google Translate, not legally binding) Download PDF

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ES2403363A2
ES2403363A2 ES201001054A ES201001054A ES2403363A2 ES 2403363 A2 ES2403363 A2 ES 2403363A2 ES 201001054 A ES201001054 A ES 201001054A ES 201001054 A ES201001054 A ES 201001054A ES 2403363 A2 ES2403363 A2 ES 2403363A2
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solar
power
photovoltaic solar
control
devices
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ES2403363B1 (en
ES2403363R1 (en
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Antonio LOPEZ GUISANDE
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Blinds (AREA)
  • Photovoltaic Devices (AREA)

Abstract

System of regulation and control of the electrical power generated in photovoltaic solar installations by devices of concealment of solar panels to solar radiation. The system is based on concealing and discovering photovoltaic solar panels (1) by means of a shutter (2) driven by a motor (3) to regulate the power generated by a photovoltaic solar plant. A computer or plant control automat (7) sends the opening or closing command (5) to the motor of each blind. The computer or control automaton of the plant (6) receives the power instructions (4) from the operator of the network to which the photovoltaic solar plant is connected. With this system, the power generated by a photovoltaic solar plant can be adjusted to the maximum power setpoint value that can be established at any time by the operator of the network to which it is connected. (Machine-translation by Google Translate, not legally binding)

Description

Sector de la Técnica. Technical Sector

la invención se encuadra dentro del sector de la técnica de las energía renovables, más en concreto, en lo relacionado con el control y regulación de la potencia eléctrica de las energías renovables. The invention falls within the field of renewable energy technology, more specifically, in relation to the control and regulation of the electrical power of renewable energy.

10 El principal problema de las energías renovables en general, y de la solar fotovoltaica en particular, consiste en su dificultad para regular y controlar la potencia eléctrica que inyectan en el sistema eléctrico. Esta falta de capacidad de regulación impide el pleno desarrollo de las energías renovables cuya pote!ncia máxima instalada en el sistema eléctrico está limitada por dicha falta de capacidad de rE!gulación para adaptarse a las necesidades de 10 The main problem of renewable energy in general, and of photovoltaic solar in particular, is its difficulty in regulating and controlling the electrical power injected into the electrical system. This lack of regulation capacity prevents the full development of renewable energies whose maximum power installed in the electrical system is limited by said lack of regulation capacity to adapt to the needs of

15 consumo y para contribuir a mantener la seguridad y fiabilidad de la red. 15 consumption and to help maintain the security and reliability of the network.

Estado de la técnica. State of the art

Para solucionar estos problemas se ¡están estudiando en la actualidad diversos métodos o sistemas de regulación como puede ser el almacenamiento de la energía. To solve these problems, various regulation methods or systems such as energy storage are currently being studied.

20 En el documento de patente ES 2316~~68A1 se propone un sistema encaminado a conseguir el control y la regulación de la energía eléctrica generada en las instalaciones solares fotovoltaicas. Dicho sistema consiste en el emplE!o de ultracondensadores para proporcionar al sistema capacidad de regulación de la potencia entregada a la red mediante el almacenamiento del exceso de energía que será entregado a la red posteriormente. La 20 Patent system ES 2316 ~~ 68A1 proposes a system aimed at achieving control and regulation of the electrical energy generated in photovoltaic solar installations. This system consists of the use of ultracapacitors to provide the system with capacity to regulate the power delivered to the network by storing the excess energy that will be delivered to the network later. The

25 diferencia con la invención objeto de este documento es el método empleado para conseguir la regulación y control de la potencia. En el documento objeto de esta solicitud de patente, en lugar de utilizar ultracondensadores para el almacenamiento de la energía, se propone regular la potencia entregada a la red eléctrica mediante la ocultación o tapado automático de placas solares por medio persianas o cortinas de manera que se oculten o descubran las placas de la The difference with the invention object of this document is the method used to achieve the regulation and control of the power. In the document that is the subject of this patent application, instead of using ultracapacitors for energy storage, it is proposed to regulate the power delivered to the electricity grid by automatically hiding or covering solar panels by means of blinds or curtains so that hide or discover the plates of the

radicación solar en un número suficiente para que se regule la potencia eléctrica adaptándose a las necesidades y requerimientos del sistema E!léctrico. solar radiation in a sufficient number to regulate the electrical power adapting to the needs and requirements of the electric system.

5 5
Por otro lado, en el campo de la energía solar térmica, han sido planteados sistemas y mecanismos para proteger las placas solares de los sobrecalentamientos excesivos así como de las acciones externas que pueden causar daños sobre las mismas. On the other hand, in the field of thermal solar energy, systems and mechanisms have been proposed to protect the solar panels from excessive overheating as well as external actions that can cause damage to them.

10 15 20 10 15 20
En el documento de patente ES 2296488A1 se expone un dispositivo de cortinilla o persiana motorizada para ocultar y proteger pla,cas solares de sobrecalentamientos por exceso de radiación o por la acción de agentes externos, como por ejemplo el granizo. En la invención objeto de este documento se propone utiliz,ar dispositivos de ocultación similares a los expuestos en dicha patente, pero con la finalidad de permitir tapar o descubrir las placas solares para regular la potencia eléctrica entregada a la red por la instalación solar fotovoltaica. Además, existe otra diferencia, qwe consiste en que el método de accionamiento de la persiana o cortina, en lugar de ser controlado por diversos tipos de sensores de temperatura, presión o granizo, será accionado a través del sistema de control de la planta. El sistema de control establecerá, en función de las necesidades de la red eléctrica, el valor de potencia máxima a inyectar en la red, o bien necibirá dicho valor del operador de la red a la que se conecta. Tras el cálculo o recepción del valor de potencia máxima, el sistema de control enviará las órdenes de accionamiento a los motores para tapar o descubrir tantas placas solares como sea necesario para conseguir que~ la planta opere a la máxima potencia posible sin exceder el valor de consigna establecido. Patent document ES 2296488A1 discloses a curtain device or motorized blind to hide and protect solar cells from overheating due to excessive radiation or by the action of external agents, such as hail. In the invention object of this document it is proposed to use concealment devices similar to those set forth in said patent, but with the purpose of allowing to cover or discover the solar panels to regulate the electrical power delivered to the network by the photovoltaic solar installation. In addition, there is another difference, which is that the blind or curtain drive method, instead of being controlled by various types of temperature, pressure or hail sensors, will be activated through the plant's control system. The control system will establish, depending on the needs of the electricity network, the maximum power value to be injected into the network, or else it will receive said value from the operator of the network to which it is connected. After the calculation or receipt of the maximum power value, the control system will send the drive orders to the motors to cover or discover as many solar panels as necessary to ensure that the plant operates at the maximum possible power without exceeding the value of setpoint set.

Problema técnico planteado. Technical problem raised.

2S 2S
Debido al aumento de la potencia solar fotovoltaica instalada en los últimos años, los sistemas eléctricos requieren mayor capacidad de control y regulación de la energía generada para garantizar la correcta cobertura de la demanda eléctrica en condiciones de seguridad y fiabilidad del sistema eléctrico. Due to the increase in the photovoltaic solar power installed in recent years, electrical systems require greater capacity to control and regulate the energy generated to ensure the correct coverage of the electrical demand in conditions of safety and reliability of the electrical system.

30 30
Para ello, las compañías eléctricas encargadas de la operación de las redes de distribución y transporte, así como los reguladores y legisladores de cada país, están estudiando requerimientos técnicos más exigentes para la nueva potencia solar fotovoltaica que se instale en los próximos años. El objetivo previsible que tendrán estos nuevos For this, the electricity companies responsible for the operation of the distribution and transport networks, as well as the regulators and legislators of each country, are studying more demanding technical requirements for the new photovoltaic solar power that will be installed in the coming years. The foreseeable objective that these new ones will have

requerimientos técnicos, será obligar a las; instalaciones solares fotovoltaicas a aportar capacidad de regulación y control sobre la potencia eléctrica que inyectan en la red. Estos nuevos requerimientos exigirán a la energía solar poder ajustar su potencia a las necesidades del operador de la red a la que se conectan piara garantizar la seguridad o fiabilidad de la red technical requirements, will be to force the; Photovoltaic solar installations to provide regulation and control capacity over the electrical power they inject into the network. These new requirements will require solar energy to be able to adjust its power to the needs of the network operator to which they connect to guarantee the security or reliability of the network

5 eléctrica. 5 electric.

Por analogía con lo que ha sucedido con la energía eólica durante los últimos años, es esperable y previsible que a las futuras instalaciones de energía solar fotovoltaica se le requieran unos niveles de exigencia técnica similares a los que ha sido sometida la energía eólica. By analogy with what has happened with wind energy during the last years, it is expected and predictable that future photovoltaic solar energy installations will be required to require similar technical levels to which wind energy has been subjected.

Descripción detallada de la invención. Detailed description of the invention.

La invención que se propone en este documento, consiste en la utilización de un sistema o dispositivo tipo persiana, cortina o similar (2) para ocultar o tapar las placas solares fotovoltaicas (1) de la radicación solar, cuyo accionamiento será automático, con el objetivo de The invention proposed in this document consists in the use of a blind, curtain or similar system or device (2) to hide or cover the photovoltaic solar panels (1) of the solar radiation, whose operation will be automatic, with the aim of

15 poder regular la potencia eléctrica entregada a la red tapando o descubriendo placas solares en función de los requerimientos del operador de la red. Cuando el operador de la red (6) establezca consignas a la potencia máxima a inyectar en su red, enviará esta consigna de potencia máxima a través de los sistemas de comunicaciones (4) al centro de control de la planta fotovoltaica (7), donde se procesará 1f convertirá dicha consigna para ser enviada la 15 be able to regulate the electrical power delivered to the network by covering or discovering solar panels depending on the requirements of the network operator. When the network operator (6) establishes setpoints at the maximum power to be injected into its network, it will send this maximum power setpoint through the communication systems (4) to the control center of the photovoltaic plant (7), where 1f will be processed will convert said setpoint to be sent the

20 orden correspondiente (5) al motor o motOrE~S (3) necesarios para accionar las persianas, de manera que se taparán o descubrirán el ntJlmero necesario de placas que permita que la potencia inyectada a la red sea inferior al valor máximo de consigna establecido. Cuando el valor de la consigna disminuya la potencia mál<ima, se taparán las placas necesarias para que la planta fotovoltaica opere a la máxima pote·ncia posible sin exceder el valor de consigna. 20 corresponding order (5) to the motor or motOrE ~ S (3) necessary to drive the blinds, so that the necessary number of plates that allow the power injected into the network to be lower than the maximum setpoint setpoint will be covered or discovered . When the value of the setpoint decreases the maximum power, the necessary plates will be covered so that the photovoltaic plant operates at the maximum power possible without exceeding the setpoint value.

25 Cuando el valor de la consigna aumente I¡a potencia máxima, se descubrirán las placas necesarias para que la planta fotovoltaica opere a la máxima potencia posible sin exceder el valor de consigna. En el caso de que las limitaciones sean retiradas, se descubrirán todas las placas para que la instalación inyecte la máxima potencia disponible a la red. 25 When the value of the setpoint increases to maximum power, the plates necessary for the photovoltaic plant to operate at the maximum possible power without exceeding the setpoint value will be discovered. In case the limitations are removed, all the plates will be discovered so that the installation injects the maximum power available to the network.

En la figura 1 se muestra una planta solar fotovoltaica en la que cada placa solar (1) 30 dispone de su propia persiana motorizada (2). En la figura 2 se muestra ampliado el sistema de accionamiento individual de cada persiana mediante motor eléctrico (3) que permita tapar o Figure 1 shows a photovoltaic solar plant in which each solar panel (1) 30 has its own motorized blind (2). Figure 2 shows the expanded individual drive system of each blind by means of an electric motor (3) that allows to cover or

descubrir grupos de placas con independenda del resto. El accionamiento de cada persiana se realizará de manera automática en respuesta a las órdenes recibidas desde el ordenador o autómata de control (7) de la planta solar. Este ordenador o autómata (7) recibirá continuamente, a través del sistema de comunicaciones (4), el valor de potencia máxima que 5 el operador de la red (6) permite inyectar en la red. Una vez recibido este valor, el ordenador o autómata (7), calculará el número de persiianas que debe accionar para conseguir que la potencia inyectada en la red sea la mayor posible sin exceder el valor de potencia máxima recibido. Tras accionar las persianas, el sistema de control comprobará continuamente que la potencia total de la instalación es inferior al valor máximo ordenado por el operador de la red. discover groups of plates with independence from the rest. The drive of each blind is will perform automatically in response to orders received from the computer or control automaton (7) of the solar plant. This computer or automaton (7) will receive continuously, through the communications system (4), the maximum power value that 5 the network operator (6) allows to inject into the network. Once this value is received, the computer or automaton (7), will calculate the number of blinds that must be activated to get the power injected into the network be as large as possible without exceeding the maximum power value received. After operating the blinds, the control system will continuously check that the Total power of the installation is less than the maximum value ordered by the network operator.

10 Si se cumple dicha consigna, el sistema se mantiene y si no se cumple, se acciona una nueva persiana y se vuelve a comprobar hasta conseguir el valor ordenado. El sistema funcionará mediante un sistema de control en lazo cerraldo, de manera que siempre se inyecta a la red la mayor potencia permitida por la radiación solar sin exceder el valor de la consigna actual de potencia máxima recibida del operador de la Ired. 10 If this setpoint is fulfilled, the system is maintained and if it is not met, a new blind is activated and checked again until the ordered value is achieved. The system will operate through a control system in a closed loop, so that the maximum power allowed by solar radiation is always injected into the network without exceeding the value of the current maximum power setpoint received from the Ired operator.

15 los motores eléctricos (3) que accionan cada una de las persianas se alimentarán con corriente continua a la tensión nominal de generación de cada una de las placas fotovoltaicas (1), de manera que sea cada una de las placas fotovoltaicas (1) las que proporcionen la potencia de accionamiento de cada uno de los motores. De esta manera se reduce la necesidad de cableado de la instalación, mejorando su eficacia y reduciendo los costes de The electric motors (3) that drive each of the blinds will be supplied with direct current at the nominal generation voltage of each of the photovoltaic panels (1), so that each of the photovoltaic plates (1) is that provide the driving power of each of the motors. This reduces the need for installation wiring, improving its efficiency and reducing the costs of

20 instalación del sistema. 20 system installation.

En la actualidad, se exige a los propietarios de instalaciones solares fotovoltaicas disponer de dispositivos de telecontrol y/o teledisparo que permitan al operador de la red a la que se conectan desconectar la planta de la red en caso de que se presenten situaciones que puedan poner en peligro la seguridad o fiabilidad de dicha red. Estas desconexiones suponen Currently, photovoltaic solar system owners are required to have telecontrol and / or remote control devices that allow the network operator to which they connect to disconnect the plant from the network in case situations arise that may put endangered the security or reliability of said network. These disconnections mean

25 un perjuicio económico para el propietario de la instalación por la pérdida de producción durante el tiempo que se mantiene la instaladón desconectada de la red y suelen ser causa de averías en la instalación. 25 an economic damage for the owner of the installation due to the loss of production during the time that the installation is kept disconnected from the network and are usually the cause of installation failures.

Este sistema puede permitir, en el caso más extremo, reducir a cero la potencia eléctrica generada tapando todas las placas solares, con lo que se consiguen grandes 30 beneficios como los que se indican a continuación: This system can allow, in the most extreme case, to reduce to zero the electric power generated by covering all the solar panels, thus achieving great benefits such as those indicated below:

reducir la potencia en función de si disminuYE~ o aumenta la frecuencia de la red respecto a su valor nominal. reduce the power depending on whether it decreases or increases the frequency of the network with respect to its nominal value.

Prestar al sistema eléctrico estos servicios complementarios, podría proporcionar al propietario de la planta los siguientes beneficiios: Providing these complementary services to the electrical system could provide the plant owner with the following benefits:

5 • Son servicios remunerados, con lo que el propietario de la planta puede obtener un mayor beneficio y rentabilidad de la instalación. 5 • They are paid services, so that the plant owner can obtain a greater benefit and profitability of the installation.

• Dan prioridad de funcionamiento a las plantas que ofrecen dicho servicio frente a otras plantas que no lo ofrezcan. Por tanto mejoran la producción eléctrica al estar más horas operativas respecto a otras plantas que no ofrezcan dichos servicios. • They give operation priority to the plants that offer this service over other plants that do not offer it. Therefore, they improve electricity production by being more operational hours compared to other plants that do not offer such services.

10 • Al contribuir a la seguridad de la red, IPueden contribuir a que técnicamente se permita disponer de una mayor potencia solalr fotovoltaica instalada en el sistema eléctrico en condiciones de seguridad y fiabilidad. 10 • By contributing to the security of the network, they can contribute to technically allowing greater photovoltaic solar power installed in the electrical system under safety and reliability conditions.

Exposición detallada de, al menos, un modo de realización de la invención. Detailed statement of at least one embodiment of the invention.

15 Un posible modo de realización de e~sta invención consiste en disponer de persianas motorizadas (2)(3) sobre placas solares fotovoltaicas (1) de la instalación. Cada una de estas persianas (2) dispone de un motor eléctrico (3)que al ser accionado permite tapar o descubrir las placas solares (1). El accionamiento de cada motor está controlado por el ordenador o autómata de control de la planta (7). Ese ordenador o autómata está en comunicación A possible embodiment of this invention consists in having motorized blinds (2) (3) on photovoltaic solar panels (1) of the installation. Each of these blinds (2) has an electric motor (3) which, when activated, allows the solar panels to be covered or uncovered (1). The drive of each motor is controlled by the plant control computer or automaton (7). That computer or automaton is in communication

20 permanente (4) con el operador de la red (6) y recibe el valor de potencia máxima que se permite entregar a la red. Cuando el valor rE!cibido es inferior a la potencia actual entregada por la planta, se accionan los motores (3) de lias persianas (2) para tapar tantas placas (1) como sea necesario para reducir la potencia por debajo del valor máximo permitido. Cuando se aumenta el valor de potencia permitido, se alccionan los motores (3) de las persianas (2) que 20 permanent (4) with the network operator (6) and receives the maximum power value that is allowed to be delivered to the network. When the value rE! Cibido is lower than the current power delivered by the plant, the motors (3) of the blinds (2) are activated to cover as many plates (1) as necessary to reduce the power below the maximum allowed value . When the permitted power value is increased, the motors (3) of the blinds (2)

25 tapan las placas (1) para descubrir tantas corno sea necesario para entregar la mayor potencia posible sin exceder el valor máximo permitidol. 25 cover the plates (1) to discover as many as necessary to deliver as much power as possible without exceeding the maximum allowable value.

Claims (5)

REIVINDICACIONES 1.-Sistema de regulación y control de la potencia eléctrica generada en instalaciones solares fotovoltaicas mediante dispositivos de ocultación de las placas solares a la radiación solar 1.-System of regulation and control of the electric power generated in photovoltaic solar installations by means of devices for hiding solar panels from solar radiation 5 caracterizado por tapar y descubrir placas solares fotovoltaicas de manera automática, accionando los dispositivos de ocultación con motores eléctricos, para reducir o aumentar la potencia entregada a la red por la instalación solar fotovoltaica 5 characterized by covering and discovering photovoltaic solar panels automatically, driving the concealment devices with electric motors, to reduce or increase the power delivered to the network by the photovoltaic solar system 2.-Sistema según la reivindicación 1 caracterizado porque además comprende unidades remotas de control (RTUs) conectadas a cada motor que reciben las órdenes de apertura o cierre 10 desde el sistema de control de la instalación solar fotovoltaica. 2. System according to claim 1 characterized in that it further comprises remote control units (RTUs) connected to each motor that receive the opening or closing orders 10 from the control system of the photovoltaic solar installation. 3.-Sistema según la reivindicación 1 caracterizado porque además comprende dispositivos de detección de final de carrera que cortan la alimentación eléctrica al motor y lo detienen una vez finalizado el recorrido de apertura o cierre del dispositivo de ocultación. 3. System according to claim 1, characterized in that it also comprises end-of-stroke detection devices that cut off the power supply to the motor and stop it once the opening or closing path of the concealment device is finished. 4.-Procedimiento de accionamiento die los dispositivos de ocultación caracterizado 4.-Drive procedure of the concealment devices characterized 15 porque el sistema es gobernado desde el sistema de control enviando órdenes de apertura o cierre a la RTU de cada motor, en base a consignas que establecen la potencia máxima que se permite que la instalación solar fotovoltaica entregue a la red eléctrica. 15 because the system is governed from the control system by sending opening or closing orders to the RTU of each motor, based on setpoints that establish the maximum power that the photovoltaic solar installation is allowed to deliver to the power grid. 5.-Procedimiento de accionamiento según la reivindicación 4 caracterizado porque el sistema de control recibe las consigas de potencia máxima permitida del operador de la red 20 eléctrica a la que se conecta, a través de los sistemas de comunicaciones disponibles en la planta 5.-Drive procedure according to claim 4, characterized in that the control system receives the maximum permissible power inputs from the operator of the electrical network to which it is connected, through the communication systems available in the plant fotovoltaica. Photovoltaic
ES201001054A 2010-08-03 2010-08-03 SYSTEM OF REGULATION AND CONTROL OF ELECTRICAL POWER GENERATED IN PHOTOVOLTAIC SOLAR FACILITIES THROUGH DEVICES OF HIDING THE SOLAR PLATES TO THE SOLAR RADIATION. Withdrawn - After Issue ES2403363B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES201001054A ES2403363B1 (en) 2010-08-03 2010-08-03 SYSTEM OF REGULATION AND CONTROL OF ELECTRICAL POWER GENERATED IN PHOTOVOLTAIC SOLAR FACILITIES THROUGH DEVICES OF HIDING THE SOLAR PLATES TO THE SOLAR RADIATION.

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ES201001054A ES2403363B1 (en) 2010-08-03 2010-08-03 SYSTEM OF REGULATION AND CONTROL OF ELECTRICAL POWER GENERATED IN PHOTOVOLTAIC SOLAR FACILITIES THROUGH DEVICES OF HIDING THE SOLAR PLATES TO THE SOLAR RADIATION.

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ES2403363A2 true ES2403363A2 (en) 2013-05-17
ES2403363R1 ES2403363R1 (en) 2013-05-29
ES2403363B1 ES2403363B1 (en) 2014-04-30

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ES201001054A Withdrawn - After Issue ES2403363B1 (en) 2010-08-03 2010-08-03 SYSTEM OF REGULATION AND CONTROL OF ELECTRICAL POWER GENERATED IN PHOTOVOLTAIC SOLAR FACILITIES THROUGH DEVICES OF HIDING THE SOLAR PLATES TO THE SOLAR RADIATION.

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1049138Y (en) * 2001-05-23 2002-03-16 Vallejo Jorge Gomez COVER SOLAR ENERGY PLATES.
ES1064616Y (en) * 2007-01-12 2007-07-01 Flexitub S L SOLAR FLAT COLLECTOR
DE102008022128A1 (en) * 2008-05-05 2009-11-12 Rupieper, Günter Device for switching-off photovoltaic unit, has cover which is fixed above solar module or solar modules, by which solar modules are shadowed in power-down mode
ES1069943Y (en) * 2009-02-25 2009-10-01 Sanchez Jimenez Ignacio Pascua PERFECTED SOLAR COLLECTOR

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ES2403363R1 (en) 2013-05-29

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