In view of the high efficiency requirement for the two-stage converter in a wide load range,the key circuits of the LLC power converter are studied and the corresponding prototype is designed.Based on the working principle of half-bridge LLC topology and the analysis of converter characteristics,the converter circuit parameters are designed,and the prototype is verified through the experiments.The results show that the LLC power converter can achieve zero voltage turn-on ZVS of the primary switch tube and zero current turn-off ZCS of the secondary diode in the full load range,and the efficiency is greatly improved,which has certain reference significance for the devel-opment of similar devices.
关键词
两级式/半桥LLC变换器/高功率密度
Key words
two-stage/half-bridge LLC converter/high power density
维普
万方数据