Performance evaluation on ZCS-PFM series-resonant DC-DC converter with high-frequency high-voltage transformer for magnetron drive

摘要

This paper presents a high-frequency link ZCS-PFM series-resonant DC-DC converter. The conventional circuit topology operates on current discontinuous mode. However, current discontinuous mode is difficult to realize, because it is possible under the severe condition. Especially, it is remarkable in. the converter with capacitor input type output smoothing circuit and with a constant high voltage load as magnetron drive system. In order to improve this problem, the new topology operating to utilize the magnetizing current of a high-frequency transformer is proposed and discussed in this paper on the bases of simulation and experimental results.