LLC resonant converter circuit topology is mostly used for intermediate frequency auxiliary converter of rolling stock,and the design of intermediate frequency transformer is difficulty.In this paper,the transmission power and loss of transformer can be accurately calculated by using the method of voltage and current waveform product and then integration with time,so as to optimize the volume and weight of the intermediate frequency transformer.FFT transform the collected voltage and current wave-forms,analyze the dynamic frequency domain characteristics of the transformer and calculate the insertion loss,preliminary explore the filter characteristics of the transformer,and lay the foundation for EMC analysis of the auxiliary converter.
关键词
辅助变流器/LLC谐振变换器/中频变压器/传输功率/滤波特性
Key words
auxiliary converter/LLC resonant converter/intermediate frequency transformer/transmission power/filter characteristics
维普
万方数据