有源钳位逆变器最小开关损耗调制策略的研究  

Research on Minimum Switch Loss Modulation Strategy of ANPC

作　　者：郝琦[1] 冯晓云[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《机车电传动》2014年第4期24-27,共4页Electric Drive for Locomotives

基　　金：国家自然科学基金--高级联合基金重点项目(U11344205)

摘　　要：针对三电平有源钳位逆变器拓扑,介绍了一种减小开关损耗的调制方案。首先分析了各种工作状态下每个功率器件的开关损耗情况;然后基于零序分量注入的载波调制算法,提出了一种动态最小开关损耗载波脉宽调制策略;最后建立仿真模型,逆变器侧分别选取CRH380A型动车组牵引电机以及三相阻感电路作为负载。验证了该拓扑调制方案能有效地降低总开关损耗,均衡损耗在各开关器件上的分布,提高了牵引系统的热稳定性。A new modulation scheme for reducing switching loss was introduced for three-level active neutral-point-clamped （ANPC） inverter topology. The loss in each switch state was analyzed qualitatively; based on zero-order injection carrier-modulation method, a dynamic minimum switching loss modulation scheme was proposed; Simulation model was built to test and verily the applicability of this scheme in controlling the CRH380A EMUs motor and resistance-inductance load. The results showed that this topology modulation scheme reduced the total switching loss, balanced the loss distribution and efficiently improved the thermal stability of traction system.

关 键 词：三电平 有源钳位 功率器件 开关损耗 载波调制 热稳定性 逆变器 

分 类 号：TM464[电气工程—电器]