摘要
针对能量路由器中双有源桥(Dual Active Bridge,DAB)变换器的传输效率不高、电流应力大和动态性能不佳的问题,提出一种基于最小变压器漏感电流与全功率范围开关器件零电压开通(Zero Voltage Switching,ZVS)相结合的三重移相(Triple Phase Shift,TPS)控制方法。该方法通过对TPS调制下DAB变换器的漏感电流特性、传输功率特性和软开关特性进行分析,推导出三个控制变量(D_(1),D_(2),D_(φ))间的最优关系表达式,优化了传统TPS控制,根据负载情况,灵活切换控制模式,使得所有开关器件均实现ZVS和电感电流有效值最小。仿真实验结果证明了所提控制策略的有效性及正确性。
Aiming at the problems of low transmission efficiency,high current stress,and poor dynamic performance of Dual Active Bridge(DAB)converters in electric energy router,a triple phase shift(TPS)control method based on minimum transformer leakage current and zero voltage switching(ZVS)is proposed.By analyzing the leakage current characteristics,transmission power characteristics,and soft switching characteristics of DAB converters under TPS modulation,the optimal relationship expression with three control variables(D_(1),D_(2),D_(φ))is derived,which optimizes the traditional TPS control.According to the load condition,the control mode can be flexibly switched to minimize inductance current and realize ZVS for all switches.The simulation results show that the proposed control strategy is effective and correct.
作者
谢锡锋
吴雪松
王江伟
陈涛
XIE Xifeng;WU Xuesong;WANG Jiangwei;CHEN Tao(Guangxi Vocational College of Water Resources and Electric Power,Nanning 530023,China)
出处
《广西电力》
2022年第6期74-80,共7页
Guangxi Electric Power
基金
广西高等学校高水平创新团队及卓越学者计划项目(桂教人才〔2020〕6号)
四川省区域创新合作项目(2021YFQ0051)。
关键词
能量路由器
DAB变换器
零电压开通
电流应力
三重移相
electric energy router
DAB converter
zero voltage switching
current stress
triple phase shift
