Transmission Power Calculation and Research on Filtering Characteristics of Intermediate Frequency Transformer
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.
auxiliary converterLLC resonant converterintermediate frequency transformertransmission powerfilter characteristics