基于RB-IGBT的三电平光伏并网逆变器的效率分析  

Efficiency Analysis of a New Three-level Grid-connected Photovoltaic Inverter Based on RB-IGBT

作　　者：刘洋[1] 苏建徽[1] 

机构地区：[1]合肥工业大学教育部光伏系统工程研究中心,合肥230009

出　　处：《高压电器》2012年第6期70-74,共5页High Voltage Apparatus

摘　　要：笔者分析了1种基于RB-IGBT的新型三电平光伏并网逆变器在不同的开关频率下工作时的开关损耗和导通损耗,并介绍了相关损耗的计算方法,通过MATLAB软件的计算得出数值,并与NPC三电平逆变电路和两电平逆变电路在同等情况下运行时的损耗进行了对比,从而得出此逆变电路应用在光伏并网逆变器中可以提高逆变器的效率。This paper presents a new three-level grid-connected photovoltaic inverter circuit based on RB-IGBT, analyzes its switching losses and conduction losses with different switching frequency, introduces the method of the relevant losses calculated by MATLAB software, compares with the NPC three-level inverter circuit and two- level inverter circuit losses running in the same circumstances,thus,obtains the conclusion what this inverter circuit used in the grid-connected photovoltaic inverter can improve the efficiency.

关 键 词：RB—IGBT 损耗 效率 

分 类 号：TM464[电气工程—电器]