System For The Electronic Management Of Photovoltaic Cells With Adapted Thresholds
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Abstract
The invention relates to a system for the electronic management of a photovoltaic generator, said system comprising a plurality of n static converters (11, 12, 13) connected in parallel, each converter (11, 12, 13) being electrically connected to at least one photovoltaic cell (10) of the generator. The number of converters connected is determined by comparing the generated power to thresholds P1, P2, . . . , Pn-1 which are defined as the power values substantially at the point of intersection of the performance curves for an increasing number of converters. The invention also relates to a generator comprising said system and to the associated control method.
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Citations
44 Claims
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1-22. -22. (canceled)
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23. An electronic control system of a photovoltaic generator having a plurality of photovoltaic cells, the electronic control system comprising:
a plurality of converters coupled in parallel, each of said plurality of converters being electrically selectively coupled to at least one photovoltaic cell of the photovoltaic generator wherein the number of converters coupled to the photovoltaic generator cells is determined by comparing thresholds generated in power (PI, P2, . . . Pn-1) and wherein the thresholds are defined as power values substantially at a point of intersection of a yield curve for an increasing number of converters. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A photovoltaic generator comprising:
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at least one photovoltaic cell; and a management system having threshold values stored therein and wherein the threshold values are subject to change depending upon a measurement of a parameter the photovoltaic generator.
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39. A method of controlling a photovoltaic generator having at least one photovoltaic cell and a plurality of n parallel coupled converters, each of the plurality of converters being electrically coupled to at least one of the at least one photovoltaic cells, the method comprising:
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determining power generated by the at least one photovoltaic cell; comparing power generated by the at least one photovoltaic cell with peak power; comparing power generated by the at least one photovoltaic cell with one or more threshold values wherein the thresholds values are defined as power values substantially at a point of intersection of one or more yield curves for an increasing number of converters of at least one photovoltaic cell; and coupling i converters when a measured power value is between Pi and Pi-1 or all the converters if the measured power value is greater than Pn-1. - View Dependent Claims (40, 41, 42, 43, 44)
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Specification