一种IGCT三电平变流器极限功率试验方法  

A Method of Limit Power Test for IGCT Three-level Converter

作　　者：田凯 俞智斌 袁媛 楚子林 陈玉杰 孙传杰 TIAN Kai;YU Zhibin;YUAN Yuan;CHU ZiLin;CHEN Yujie;SUN Chuanjie(Tianjin Research Institute of Electric Science Co.,Ltd.,Tianjin 300180,China;National Engineering Research Center of Electric Drive,Tianjin 300180,China)

机构地区：[1]天津电气科学研究院有限公司,天津300180 [2]电气传动国家工程研究中心,天津300180

出　　处：《电气传动》2023年第8期15-18,28,共5页Electric Drive

基　　金：天津电气科学研究院有限公司科研基金(YF2022ZL004);国机研究院青年科研基金(TD2021ZK003)。

摘　　要：提出一种可以评估大容量IGCT三电平变流器极限功率输出能力的测试方法。基于同步对称PWM调制及温度估计模型进行IGCT三电平变流器功率实验,可测试不同负载功率因数下、可逆运行下的设备容量,实现对功率器件温升的准确评估。该方法采用PWM脉宽实时调节的方式改变负载电感两端电压差,相比于一般同步调制方法直接改变查表角度或查表电压的方式,进一步减小了电流纹波,使测试电流更贴近实际情况。A test method was proposed that can evaluate the ultimate power output capability of large capacity IGCT three-level converter.Based on synchronous symmetrical PWM modulation and temperature estimation model,the power experiment of IGCT three-level converter was carried out,which can test the equipment capacity under different load power factors and reversible operation,and achieve accurate evaluation of power device temperature rise.This method uses PWM pulse width real-time adjustment to change the voltage difference between the two ends of the load inductor.Compared with the general synchronous modulation method,which directly changes the angle or voltage of the table lookup,this method further reduces the current ripple and makes the test current closer to the actual situation.

关 键 词：三电平变流器 集成门极换流晶闸管(IGCT) 功率试验 同步调制 

分 类 号：TM28[一般工业技术—材料科学与工程]