双变压器型零电流开关复合式全桥变换器
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摘要
大功率DC/DC变换器是将新能源连接至中压直流电网的重要环节。在此提出一种适用于中压直流电网的新型复合式全桥变换器,该变换器能实现全负载范围内主开关管的零电流开通和关断,并有效减小了开关损耗。在此分析了变换器的工作原理,并设计一台120 V～1 200 V/1 kW的原理样机,验证了变换器的性能。
High power DC/DC converter is the essential component for connecting the renewable energy sources to medium voltage DC grids.A novel hybrid full-bridge converter for high-power DC grid systems is proposed,and the main feature of the converter is that all the main switches can realize zero-current switching in the whole load range and switching loss is significantly reduced.The operation principles of the proposed converter are analyzed in detail,which has been verified by experimental results of a 120 V～1 200 V/1 kW prototype.
High power DC/DC converter is the essential component for connecting the renewable energy sources to medium voltage DC grids.A novel hybrid full-bridge converter for high-power DC grid systems is proposed,and the main feature of the converter is that all the main switches can realize zero-current switching in the whole load range and switching loss is significantly reduced.The operation principles of the proposed converter are analyzed in detail,which has been verified by experimental results of a 120 V～1 200 V/1 kW prototype.
引文
[1]Li W,Xu C,Yu H,et al.Analysis,Design and Implementation of Isolated Bidirectional Converter With Windingcross-coupled Inductors for High Step-up and High Step-down Conversion System[J].IET Power Electronics,2014,7(1):67-77.
[2]魏晓光,王新颖,高冲,等.用于直流电网的高压大容量DC/DC变换器拓扑研究[J].中国电机工程学报,2014,34(S1):218-224.
[3]李琳鹏.基于耦合电感的非隔离型高增益DC/DC变换器研究[D].安徽:安徽工业大学,2017.
[4]张欣,陈武,阮新波.一种辅助电流可控的移相全桥零电压开关PWM变换器[J].电工技术学报,2010,25(3):81-88.
[5]陈武,阮新波,陈乾宏,等.ZVS PWM全桥变换器中箝位二极管电流复位方法研究[J].电工技术学报,2011,26(8):33-43.
[2]魏晓光,王新颖,高冲,等.用于直流电网的高压大容量DC/DC变换器拓扑研究[J].中国电机工程学报,2014,34(S1):218-224.
[3]李琳鹏.基于耦合电感的非隔离型高增益DC/DC变换器研究[D].安徽:安徽工业大学,2017.
[4]张欣,陈武,阮新波.一种辅助电流可控的移相全桥零电压开关PWM变换器[J].电工技术学报,2010,25(3):81-88.
[5]陈武,阮新波,陈乾宏,等.ZVS PWM全桥变换器中箝位二极管电流复位方法研究[J].电工技术学报,2011,26(8):33-43.