Overvoltage Protection for Distributed Maximum Power Point Tracking Converters in Series Connection
Distributed maximum power point tracking (DMPPT) circuits are useful to improve the power production of photovoltaic (PV) systems operating under mismatched conditions such as partial shading. The main option to implement DMPPT circuits is the series connection of PV systems based on dc/dc converters, however those converters are subjected to overvoltage conditions that could damage the circuit. This paper proposes a sliding-mode control technique to avoid overvoltage conditions, which ensures the circuit operation in a safe operating point.
KeywordsSafety Sliding-mode Granular MPPT Grid connection
This work was supported by the Universidad Nacional de Colombia and Colciencias (Fondo nacional de financiamiento para ciencia, la tecnología y la innovación Francisco José de Caldas) under the projects MicroRENIZ-25439 (Code 1118-669-46197) and DIGEMICRO-30773 and under the doctoral scholarship 095-2005.
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