电气传动2026，Vol.56Issue(8)：13-20,8.DOI:10.19457/j.1001-2095.dqcd26630
电网不平衡工况下链式储能变流器SOC均衡控制方法研究
Research on SOC Balancing Control Method for Cascaded Energy Storage Converters Under Grid Unbalanced Conditions
李志鹏 1李嘉豪 2王军 1郑毅 1王丽 1何英杰2
作者信息
- 1. 河南许继仪表有限公司,河南 许昌 461000
- 2. 西安交通大学 电气工程学院,陕西 西安 710049
- 折叠
摘要
Abstract
Under grid voltage unbalance conditions,active power deviations occur between the three phases of the cascaded energy storage converter,leading to unbalanced three-phase state of charge(SOC)and ultimately reducing capacity utilization and system reliability.To address this issue,a control strategy based on the hybrid injection of negative-sequence current and zero-sequence voltage was proposed.When zero-sequence voltage injection alone cannot achieve SOC balance,the remaining power deviation was balanced through negative-sequence current injection.This approach avoids the issue of excessive zero-sequence voltage injection causing output voltage distortion,and compares to using negative-sequence current injection alone,it also reduces the negative-sequence current flowing into the grid.This control strategy balances both phase-to-phase SOC balancing capability and the output power quality of the converter.Finally,the effectiveness of this approach was verified through simulation.关键词
链式储能变流器/负序电流注入/零序电压注入/荷电状态Key words
cascaded energy storage converters/negative-sequence current injection/zero-sequence voltage injection/state of charge(SOC)分类
信息技术与安全科学引用本文复制引用
李志鹏,李嘉豪,王军,郑毅,王丽,何英杰..电网不平衡工况下链式储能变流器SOC均衡控制方法研究[J].电气传动,2026,56(8):13-20,8.
