基于断续导通模式下的PCS中双向DC/DC变换器的研究  

Research on Bidirectional DC/DC Converter for PCS Based on Discontinuous Conducting Mode

作　　者：邓湘鄂[1] 牟京卫[1] 贺俊[1] 李罗[1] 穆淼婕 

机构地区：[1]西安高压电器研究院有限责任公司,西安710075 [2]宝鸡铁路技师学院,陕西宝鸡721300

出　　处：《高压电器》2015年第12期55-58,65,共5页High Voltage Apparatus

摘　　要：为获得较高的功率密度和减小开关损耗,将PCS中双向DC/DC变换器设计在断续导通模式(DCM)下,并采用交错并联结构弥补DCM下电压电流纹波较大的缺陷。分析研究变换器采用不添加额外半导体器件的控制型软开关技术,实现开关软通断,减小开关损耗。最后推导了实现软开关的死区时间、电容、电感等设计公式。通过实验,验证了理论分析的正确性。High-power density and decreasing the turn-off loss in PCS is realized by a bidirectional DC/DC converter designed in discontinued conducting mode（DCM）. The DCM associated voltage and current ripples can be alleviated by multiphase interleaved operation. To decrease the turn-off loss, soft-switching characteristics is achieved by analyzing to the controlled soft-switching technology without any additional semiconductor devices. Finally, the design formulas for the dead-time, the capacitance and the inductance,etc to realize soft-switching are deduced. The validation of theoretical analysis is verified by the experimental results.

关 键 词：双向DC/DC变换器 断续导通模式(DCM) 交错并联 控制型软开关技术 

分 类 号：TM46[电气工程—电器]