关键词：电力电子技术；转换器；电压源转换器
摘 要：At present, voltage source converters are mostly used in electrical drives. These converters utilize capacitors in the DC-link to store temporarily electrical energy. Switching the power electronic devices allows the DC voltage to be modulated which can result in a variable voltage and frequency waveform. The purpose of the modulator is to generate the required switching signals for these switching devices on the basis of user defined inputs.