谐振负载全桥逆变PSPWM ＆ PDM软开关控制研究  

Research on Load Resonant Full-bridge Inverter PSPWM & PDM Soft-switching Control

作　　者：苏晓丽[1] 沈锦飞[1] 

机构地区：[1]江南大学物联网工程学院,轻工过程先进控制教育部重点实验室,江苏无锡214122

出　　处：《电力电子技术》2014年第8期71-73,共3页Power Electronics

基　　金：江苏省科技支撑计划项目(BE2013025)~~

摘　　要：针对逆变器在串联谐振负载条件下,移相脉宽调制(PSPWM)中移相角变大时电流波形三角畸变严重,脉冲密度调节(PDM)轻载时电流断续的缺点,将PDM与PSPWM结合起来,组成移相密度复合调节(PSPWM&PDM),对逆变器进行功率控制,逆变器始终工作在零电流开关(ZCS)状态。详细分析了PSPWM&PDM的工作模式和控制原理,给出了仿真和实验波形。Considering inverter in series resonant load conditions, the triangular current waveform distortion is serious when the phase angle becoming larger during pulse-shifted pulse width modulation （PSPWM） and shortcomings of discontinuous current when light load during pulse density modulation （PDM）, the PSPWM ＆ PDM method is presented which combined PDM and PSPWM.The power control of the inverter is done, and the inverter is kept to work in the state of zero current switching（ZCS）.The PSPWM ＆ PDM circuit working mode and control principle are analyzed and discussed in detail, the simulation and experimental waveforms are given out.

关 键 词：逆变器 串联谐振 功率控制 

分 类 号：TM464[电气工程—电器]