Design and control of photovoltaic systems in distributed generation
The design and control of a photovoltaic system for stand-alone and grid-connected applications is accomplished. The stand-alone photovoltaic system is designed to improve the photovoltaic output power by using a new maximum power point tracking method. The proposed algorithm improves the hill climb...
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University of Strathclyde
2013
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| Online Access: | http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.576436 |
| Summary: | The design and control of a photovoltaic system for stand-alone and grid-connected applications is accomplished. The stand-alone photovoltaic system is designed to improve the photovoltaic output power by using a new maximum power point tracking method. The proposed algorithm improves the hill climbing search method by fuzzifying the rules, thereby eliminating some of the disadvantages associated with the method. Modification of the proposed maximum power point tracker is proposed to increase photovoltaic system performance during partially shaded operation. Also, a new mathematical model is derived to represent the behaviour of the photovoltaic system characteristic under partial shading conditions. A single-phase single-stage current source inverter based photovoltaic system for grid connection is proposed. This system utilizes transformerless single-stage conversion for tracking the maximum power point and interfacing the photovoltaic array to the grid. The maximum power point is achieved with the proposed maximum power point tracking method. A proportional-resonant controller is used to control the current injected into the grid. Simulation and experimental results validate the proposed systems. |
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