Abstract
In this paper a novel three phase power conversion system with four units of voltage type single phase inverters, a cycloconverter and Scott connected transformers is proposed for harmonic reduction.The basic operation is described for the conversion system. Turn ratios of the transformers that minimize the total distortion factor of line-to-line voltages, capacity of the transformers and current capacity required for the switching devices are discussed in detail. The total distortion factor of the line-to-line voltages is greatly reduced.The effectiveness of the proposed conversion system is confirmed by experimental results of inverting, rectifying and reactive power compensating operation.
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