新型SRD软开关功率电路分析与仿真  

Analysis and Simulation of a New SRD Soft-Switching Converter

作　　者：杨晋岭[1] 薛红平[2] 李荧兴[2] 曹金亮[1] 

机构地区：[1]太原科技大学电子信息工程学院,太原030024 [2]北方自动控制技术研究所,太原030006

出　　处：《火力与指挥控制》2014年第2期131-134,共4页Fire Control & Command Control

基　　金：山西省科技重大专项计划基金(20121101001);山西省科技攻关基金(20100322004);山西省国际合作计划基金资助项目(20110081033)

摘　　要：针对开关磁阻电机调速系统(SRD)电磁干扰及开关损耗大的问题,提出了一种新型并联谐振软开关变换器的电路拓扑。通过在传统公共逆变桥的各相开关上并联一个缓冲电容,并在直流母线上加入一个由两个电感与一个电容为主要组成元件的谐振环节,实现对所有功率开关和谐振开关的软动作。此电路没有采用电感与分压电容中性点连接方式,故不会因中性点电位变化而影响系统可靠性。理论分析及MATLAB仿真结果表明:该电路具有控制简单,母线电压过渡速度快,谐振元件参数小,功率损耗小等特点。In view of the switched reluctance motor drive system （SRD） problems of electromagnetic interference and large switching loss, the author proposes a new parallel-resonant soft- switching converter circuit. The soft operation of all main and resonant switches is achieved by adding a parallel capacitor to each switch, and adding to the DC-bar a resonant link mainly consisting of two inductors and one capacitor in the traditional inverter bridge. Because the inductors are not connected neutral-point of voltage-dividing capacitors,no change of the potential of the neutral-point affects the reliability. The results from analysis and MATLAB simulation show that the circuit has simple control, bus voltage transition speed, small resonant parameters and small power loss.

关 键 词：开关磁阻电机 软开关 并联谐振直流环 功率变换电路 

分 类 号：TM352[电气工程—电机]