ZCT-PWM Boost变换器的潜电路分析及其应用  

Sneak Circuit Analysis of Zero-current-transition PWM Boost Converter and Application

作　　者：屈莉莉[1] 张波[2] 

机构地区：[1]佛山科学技术学院,佛山528000 [2]华南理工大学电力学院,广州510641

出　　处：《高电压技术》2011年第12期3107-3112,共6页High Voltage Engineering

基　　金：广东省自然科学基金(9152800001000026)~~

摘　　要：在分析软开关变换器潜电路模态的过程中,首次发现这些变换器的软开关性能可以通过在原有基本工作模态的基础上,加入某些潜电路模态来实现。为了利用潜电路模态提高变换器的软开关性能,提出了应用开关布尔矩阵方法分析软开关电力电子变换器的潜电路模态,以及改进变换器性能的方法。以ZCT-PWM Boost变换器为对象,分析了ZCT-PWM Boost变换器中存在的潜电路,通过改进变换器的控制方式,在基本工作模态中加入了潜电路模态,使开关管的开通和关断都可以在零电流条件下完成,从而改善了变换器的开关条件。仿真结果验证了所提出方法的正确性和有效性。The sneak circuit path was used for performance improvement in soft-switching power electronic converters for the first time.By constructing a Boolean matrix based on the states of the switching components,sneak circuit analysis（SCA）method for soft-switching converters was proposed.Some sneak circuit paths in zero-current-transition Pulse-width modulation Boost converter were identified.By modifying the control mode,it is revealed that sneak circuit paths can be included and zero-current turn-on and turn-off for the power switches can be achieved,and the soft-switching condition of the converter is improved.Moreover,the proposed program is fully validated in simulations.

关 键 词：变换器 零电流转换(ZCT) 脉冲宽度调制(PWM) 布尔矩阵 潜电路分析 Matlab 

分 类 号：TM46[电气工程—电器]