Operation Mode and Loss Analysis of Capacitor-commutation Converter Composed of Reversing-blocking IGCT

ZHANG Wenwen; WEI Xiaoguang; TANG Guangfu; WANG Yixuan; WANG Yaohua; YU Kefan; LI Song; LI Jinyuan

doi:10.13334/j.0258-8013.pcsee.240971

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Operation Mode and Loss Analysis of Capacitor-commutation Converter Composed of Reversing-blocking IGCT

更新时间：2026-07-30

- Operation Mode and Loss Analysis of Capacitor-commutation Converter Composed of Reversing-blocking IGCT
- Issue 21, Pages: 8521-8531(2025)
- 作者机构：
  
  1. 新能源电力系统全国重点实验室(华北电力大学), 北京市昌平区,102206
  2. 怀柔实验室, 北京市怀柔区,101400
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.240971
  CLC：
- Published：2025
- 稿件说明：
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ZHANG Wenwen, WEI Xiaoguang, TANG Guangfu, et al. Operation Mode and Loss Analysis of Capacitor-commutation Converter Composed of Reversing-blocking IGCT[J]. 2025, (21): 8521-8531.
DOI：

ZHANG Wenwen, WEI Xiaoguang, TANG Guangfu, et al. Operation Mode and Loss Analysis of Capacitor-commutation Converter Composed of Reversing-blocking IGCT[J]. 2025, (21): 8521-8531. DOI： 10.13334/j.0258-8013.pcsee.240971.

摘要

采用逆阻集成门极换流晶闸管(integrated gate- commutated thyristor，IGCT)器件构成的电流源型换流器(current source converter，CSC)在脉冲宽度调制方式(pulse width modulation，PWM)下能够彻底解决LCC应用于逆变侧时换相失败的问题，但PWM-CSC存在器件损耗高、驱动功率大等缺点。针对此问题，该文提出一种采用逆阻IGCT器件构成的电容电压换相电流源型换流器(capacitor-commutated current source converter，C-CSC)。首先，根据所提C-CSC拓扑结构建立换流器的数学模型，结合逆阻IGCT器件开关特性提出换流阀关断策略并分析抵御换相失败能力；其次，在C-CSC运行原理的基础上给出C-CSC越前触发角及各主电路参数设计原则；借助直流输电系统仿真模型，对比IGCT器件自然过零关断时C-CSC与LCC抵御换相失败能力、C-CSC在定电压与定关断角控制策略下的故障穿越特性，分析器件主动关断时C-CSC有功、无功功率运行特性；最后，综合对比分析稳态及暂态工况下C-CSC、PWM-CSC与混合电网换相换流器(hybrid-line commutated converter，H-LCC)的损耗及结温特性。

Abstract

Pulse width modulation current source converter (PWM-CSC) composed of reverse-blocking integrated gate-commutated thyristor (IGCT) can completely solve the problem of commutation failure when LCC is applied to the receiving end

but PWM-CSC has the disadvantage of high operating loss and driver power. In response to this issue

this article proposes a capacitor commutated current source converter composed of reverse blocking IGCT. Firstly

a mathematical model of capacitor-commutated current source converter (C-CSC) is established

and based on the switching characteristics of IGCT

a valve turning off strategy is proposed and the ability of C-CSC to resist commutation failure is analyzed. Secondly

based on the operating principle of C-CSC

the design principles of C-CSC forward trigger angle and main circuit parameters are provided. Subsequently

a simulation model of C-CSC is built using the cigre benchmark. The comparisons of resist commutation failure ability between C-CSC and line commutated converter (LCC)

and the fault ride through characteristics under constant voltage and constant extinction angle control strategies is compared. The active and reactive operating characteristics of C-CSC during deep fault conditions are analyzed. Finally

a comparative analysis is conducted on the loss and junction temperature characteristics of C-CSC

PWM-CSC

and Hybrid-line commutated converter (H-LCC) under steady-state and transient operating conditions.

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