基于数值法的有源箝位三电平逆变器损耗分析  

Analysis of Losses in Three-level Active Clamped Inverter Based on Numerical Method

作　　者：秦昌伟[1] 王群京[1] 陈权[1] 胡存刚[1] 

机构地区：[1]安徽大学,安徽合肥230601

出　　处：《电力电子技术》2014年第10期13-15,25,共4页Power Electronics

基　　金：国家自然科学基金(51307002);安徽省自然科学基金(1308085ME81)~~

摘　　要：有源中点箝位三电平(3L-ANPC)拓扑结构提高了控制自由度,与传统的二极管中点箝位型三电平(3LNPC)相比,可在一定程度上平衡功率器件的损耗。在分析3L-ANPC逆变器工作原理和功率器件损耗模型的基础上,采用数值法对传统控制方式下的器件损耗进行了计算和对比,并提出了一种损耗平衡控制策略。仿真和实验结果表明,数值法简化了损耗计算的复杂度,适合数字实现;损耗平衡控制策略可随着负载的变化动态地选择控制方式和调节控制方式的工作时间,达到平衡各功率器件损耗的目的。The topology of three-level active neutral point clamped （3L-ANPC） increases control degree of freedom,which can balance the losses among power devices to some extent,compared to traditional topology of three-level neutral point clamped（3L-NPC）.The operating principle of 3L-ANPC and loss model of power devices are analyzed,based on which losses of traditional control methods are calculated and compared by using numerical method,then a loss balancing control strategy is proposed.Simulation and experimental results demonstrate that numerical method can simplify complexity of loss calculation,which is simple for digital implementation.The loss balancing control strategy can dynamically select control method and adjust the operating time of different control methods under different load conditions,so as to balance the losses of power devices.

关 键 词：逆变器 有源中点箝位 三电平 损耗计算 

分 类 号：TM464[电气工程—电器]