To realize a wide input and output voltage range of dual-active-bridge series resonant converter(DBSRC)and improve the converter's reliability and efficiency,a control method with the hybridization of pulse width modulation(PWM)and phase-shift modulation(PSM)was proposed.The fundamental wave analysis method was used to optimize the resonant tank current by reducing its RMS value,and its small-signal model was established,which was expected to facilitate close-loop control of output voltage and current.n experimental prototype with 400 V input,220～480 V output and full load of 6.6 kW was built for verification experiment,which indicated the feasibility and effectiveness of the theo-retical analysis and the control strategy.
关键词
双有源桥串联谐振变换器/脉宽调制/小信号分析/车载充电机
Key words
dual-active-bridge series resonant converter/pulse width modulation/small signal/on board charger
维普
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