Impedance Matching Control of Grid-Forming Energy Storage Converter for Improving the Stability of the Renewable Energy Stations

Donghui Zhang; Jiafan Chen; Xin Chen

doi:10.1049/esi2.70042

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Impedance Matching Control of Grid-Forming Energy Storage Converter for Improving the Stability of the Renewable Energy Stations

更新时间：2026-10-08

- Impedance Matching Control of Grid-Forming Energy Storage Converter for Improving the Stability of the Renewable Energy Stations
- Impedance Matching Control of Grid-Forming Energy Storage Converter for Improving the Stability of the Renewable Energy Stations
- IET Energy Systems Integration 2026年8卷第1期
- 作者机构：
  
  1. Department of Electrical Engineering, Nanjing University of Aeronautics and Astronautics,Jiangsu,Nanjing,China
  2. Smart Manufacturing Business Unit, Wuhan Maritime Communication Research Institute,Hubei,Wuhan,China
- 作者简介：
- 基金信息：
- DOI：10.1049/esi2.70042
  中图分类号：
- 纸质出版：2026
- 稿件说明：
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Donghui Zhang, Jiafan Chen, Xin Chen. Impedance Matching Control of Grid-Forming Energy Storage Converter for Improving the Stability of the Renewable Energy Stations[J]. IET Energy Systems Integration, 2026,8(1).

Donghui Zhang, Jiafan Chen, Xin Chen. Impedance Matching Control of Grid-Forming Energy Storage Converter for Improving the Stability of the Renewable Energy Stations[J]. IET Energy Systems Integration, 2026, 8(1).
Donghui Zhang, Jiafan Chen, Xin Chen. Impedance Matching Control of Grid-Forming Energy Storage Converter for Improving the Stability of the Renewable Energy Stations[J]. IET Energy Systems Integration, 2026,8(1). DOI： 10.1049/esi2.70042.

Donghui Zhang, Jiafan Chen, Xin Chen. Impedance Matching Control of Grid-Forming Energy Storage Converter for Improving the Stability of the Renewable Energy Stations[J]. IET Energy Systems Integration, 2026, 8(1). DOI： 10.1049/esi2.70042.

摘要

Abstract

Increased penetration of power converters within electrical power systems frequently induces resonance issues

which can often be mitigated by reshaping the output impedance of renewable energy sources (RES). From the perspective of feasibility and cost-effectiveness

the energy storage converter (ESC)

which is already integrated into most newly built RESs

is a preferred device for impedance shaping to enhance system stability. This paper proposes an impedance matching control method for a grid-forming energy storage converter (GFM-ESC) to enhance system damping and improve overall stability. The proposed method modifies the conventional grid-forming (GFM) control structure by introducing an impedance matching loop in the stationary (αβ) reference frame. This additional loop enhances the inherent damping capability of the GFM-ESC

thereby improving the overall small-signal stability of the system. Furthermore

an impedance matching principle based on the identification of dominant oscillatory frequency bands is employed to develop a systematic impedance design methodology. An 18-kVA RES prototype

comprising a 3-kVA ESC and a 15-kVA grid-connected converter (GCC)

is built and tested to validate the effectiveness of the proposed control strategy.

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