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Parallel inverter technology is the basis for distributed power generation system to achieve high reliability, high redundancy, high capacity and high scalability, at the same time, it is also the key to the stable operation of distributed generation system. Traditional inverter technology requires low frequency transformer to achieve electrical isolation and voltage matching, which results in the...
In order to solve the problem of synchronization between grid inverter and grid voltage, and improve the detection speed and the precision for the positive-sequence component. Based on dual band pass filter structure, this paper puts forward a new type called double fundamental frequency phase locked loop (DFF-PLL) to measure the double fundamental frequency of positive-sequence component, this method...
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