Optimum control scheme of output voltage based on cascaded H-bridge DVR

Fei Jiang; Siju Cheng; Chunming Tu; Qi Guo; Qing Li; Cheng Chen

doi:10.17775/CSEEJPES.2019.02580

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Optimum control scheme of output voltage based on cascaded H-bridge DVR

Special Section Papers | 更新时间：2025-12-18

- Optimum control scheme of output voltage based on cascaded H-bridge DVR
- Optimum control scheme of output voltage based on cascaded H-bridge DVR
- 中国电机工程学会电力与能源系统学报(英文) 2020年6卷第2期页码：249-258
- 作者机构：
  
  1. School of Electrical and Information Engineering, Changsha University of Science & Technology,Changsha,China
  2. College of Electrical and Information Engineering, Hunan University,Changsha,China
  3. Department of Engineering Sciences and Mathematics, Luleå University of Technology, Lulea,Sweden
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2019.02580
  中图分类号：
- 纸质出版：2020
- 稿件说明：
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Fei Jiang, Siju Cheng, Chunming Tu, 等. Optimum control scheme of output voltage based on cascaded H-bridge DVR[J]. 中国电机工程学会电力与能源系统学报(英文), 2020,6(2):249-258.

Fei Jiang, Siju Cheng, Chunming Tu, et al. Optimum control scheme of output voltage based on cascaded H-bridge DVR[J]. CSEE Journal of Power and Energy Systems, 2020, 6(2): 249-258.
Fei Jiang, Siju Cheng, Chunming Tu, 等. Optimum control scheme of output voltage based on cascaded H-bridge DVR[J]. 中国电机工程学会电力与能源系统学报(英文), 2020,6(2):249-258. DOI： 10.17775/CSEEJPES.2019.02580.

Fei Jiang, Siju Cheng, Chunming Tu, et al. Optimum control scheme of output voltage based on cascaded H-bridge DVR[J]. CSEE Journal of Power and Energy Systems, 2020, 6(2): 249-258. DOI： 10.17775/CSEEJPES.2019.02580.

摘要

Abstract

This study presents an optimum control scheme to maximize the output voltage level number of the cascaded H-bridge dynamic voltage restorer (CHB-DVR). The relationship between the modulation index and the output voltage level number is analyzed in detail. The compensation reference voltage value is adjusted with the voltage drop depth to obtain high-quality output voltage with an acceptable total harmonic distortion. Thus

the modulation index remains within a certain range and thus meets the requirements of the maximum level number technique (MLNT). In addition

an improvement method based on the MLNT is proposed to achieve minimum active power absorption from a direct current link of the CHB-DVR. The traditional in-phase compensation and optimum control strategies are implemented to analyze the output voltage quality for verifying the feasibility of the proposed approach. Simulation and experimental results show the effectiveness of the proposed control scheme.

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