Improved Control Strategy of Current-Source Converter for HVDC System

Wenwen Zhang; Longlong Chen; Xiaoguang Wei; Lei Qi; Ke Ji; Chong Gao; Zhiyuan He

doi:10.17775/CSEEJPES.2022.00190

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Improved Control Strategy of Current-Source Converter for HVDC System

Regular Papers | 更新时间：2026-02-06

- Improved Control Strategy of Current-Source Converter for HVDC System
- Improved Control Strategy of Current-Source Converter for HVDC System
- 中国电机工程学会电力与能源系统学报(英文) 2025年11卷第3期页码：1174-1185
- 作者机构：
  
  1. North China Electric Power University,Beijing,China
  2. China Electric Power Research Institute,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2022.00190
  中图分类号：
- 纸质出版：2025
- 稿件说明：
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Wenwen Zhang, Longlong Chen, Xiaoguang Wei, 等. Improved Control Strategy of Current-Source Converter for HVDC System[J]. 中国电机工程学会电力与能源系统学报(英文), 2025,11(3):1174-1185.

Wenwen Zhang, Longlong Chen, Xiaoguang Wei, et al. Improved Control Strategy of Current-Source Converter for HVDC System[J]. CSEE Journal of Power and Energy Systems, 2025, 11(3): 1174-1185.
Wenwen Zhang, Longlong Chen, Xiaoguang Wei, 等. Improved Control Strategy of Current-Source Converter for HVDC System[J]. 中国电机工程学会电力与能源系统学报(英文), 2025,11(3):1174-1185. DOI： 10.17775/CSEEJPES.2022.00190.

Wenwen Zhang, Longlong Chen, Xiaoguang Wei, et al. Improved Control Strategy of Current-Source Converter for HVDC System[J]. CSEE Journal of Power and Energy Systems, 2025, 11(3): 1174-1185. DOI： 10.17775/CSEEJPES.2022.00190.

摘要

Abstract

Pulse width modulated current-source converter (PWM-CSC) has great prospects in high voltage direct current transmission system (HVDC) due to its attractive features

such as flexible control characteristics

ability to avoid commutation failure

and lower cost. However

valve voltage of the PWM-CSC is the jump value between filter capacitors line-voltage and zero voltage due to its bypass operation

resulting in high peak voltage withstand by the converter for a rated HVDC system and high voltage ripper ratio. In order to solve these issues

an improved modulation method called specific carrier frequency of SPWM is proposed. After adopting the improved modulation method

the number of the reverse blocking integrated gate commutated thyristor (RB-IGCT) in series can reduce by 31.5% under unity power factor operation and the value of the dc choke can reduce by about 78.6% compared to traditional modulation methods

improving practicability of engineering application. Moreover

active power and reactive power operating range are derived under different modulation methods and the relationship of the power factor

modulation in q-axis and DC current are studied. Finally

effectiveness of the improved modulation method and comparisons of power operating range are verified in PSCAD/EMTDC.

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