Patent application number | Description | Published |
20110019453 | ELECTRIC CIRCUIT FOR CONVERTING DIRECT CURRENT INTO ALTERNATING CURRENT - The invention relates to a DC/AC conversion structure, preferably intended for photovoltaic systems, having a high yield across the entire input voltage range thereof, thereby guaranteeing that direct current is not injected into the alternating current network. In a preferred embodiment, the circuit includes six switching elements (T | 01-27-2011 |
20110057445 | METHOD OF OPERATION OF A WIND TURBINE TO GUARANTEE PRIMARY OR SECONDARY REGULATION IN AN ELECTRIC GRID - The invention controls the network frequency via an active power reserve obtained by interacting in a coordinated manner with the speed regulation that acts on the power generated or on the pitch angle, to guarantee primary or secondary regulation across the whole range of wind speed. | 03-10-2011 |
20110140432 | CONTROL METHOD AND SYSTEM FOR A WIND POWER INSTALLATION IN CASE OF GRID FAULTS - The present invention relates to a method and system for controlling a wind power installation connected to an electrical power grid, in case of a fault in said grid. | 06-16-2011 |
20110170326 | METHOD FOR CONTROLLING A CONVERSION STRUCTURE FOR CONVERTING DIRECT CURRENT TO ALTERNATING CURRENT - The invention relates to a control method applicable to structures for converting direct current/alternating current, dc/ac, especially for photovoltaic systems. The control method according to the invention enables the switching losses of the semiconductors to be reduced, thereby improving the efficiency of the conversion structure. The invention can also be applied to other fields of energy, such as the generation of energy by means of electrochemical cells or wind energy. | 07-14-2011 |
20110196543 | SYSTEM AND METHOD FOR POWER MANAGEMENT IN A PHOTOVOLTAIC INSTALLATION - The subject matter of the invention is the provision of a power-management system and method for photovoltaic installations connecting to the grid, which incorporates monitoring active and/or reactive power, account being taken at all times of grid requirements, in order to allow temporary demand arising in the grid to be addressed, thereby contributing to regulation of the grid and to the stability and quality thereof. | 08-11-2011 |
Patent application number | Description | Published |
20100141424 | ANTI-THEFT DEVICE FOR SOLAR PANELS - A theft protection device for photovoltaic solar panels is provided. The device includes of at least one cable which is made to pass through the solar panels. The cable can be fibre optic or electrical, and a light beam or an electrical current, respectively, is made to circulate through the cable. At the ends of the cable, an electrical control circuit is connected, capable of detecting a cut in the cable caused by the interruption of the light beam in the fibre or a voltage drop at the ends of the electrical cable. Cutting of the cable for theft of the solar panels is detected by the control circuit which activates an alarm, acoustic and/or visual, which can belong to the device or be remote. | 06-10-2010 |
20130006431 | PROCEDURE FOR SUPPLY CONTROL AND STORAGE OF POWER PROVIDED BY A RENEWABLE ENERGY GENERATION PLANT - A process for simultaneously providing capacity sale services (e.g. frequency regulation or voltage regulation), energy sale services (energy transfer from off-peak hours to peak hours), and stabilization services of a renewable plant may be provided. The process includes determining the values of energy quantity to be produced by the plant during a near future time interval. The process may also include introducing the values of energy quantity, in the control unit. Generating an hourly programme of energy supply to be provided by the energy accumulator unit to the network may also be performed, depending on the values of energy to be produced, which stabilizes the power supplied by the plant to the network. Furthermore, the frequency and the voltage of the network may be regulated as well as transfers the energy between off-peak hours and peak hours, or from hours with saturation of the network to hours without saturation. | 01-03-2013 |