Current Control System of Hybrid Converter for Suppressing Current Harmonics

2021 IEEE International Electric Machines & Drives Conference (IEMDC) Pub Date : 2021-05-17 DOI:10.1109/IEMDC47953.2021.9449587

Yang Liang, D. Liang, S. Jia, Shuaijun Chu, Hao Wang, Yongtao Liang

{"title":"Current Control System of Hybrid Converter for Suppressing Current Harmonics","authors":"Yang Liang, D. Liang, S. Jia, Shuaijun Chu, Hao Wang, Yongtao Liang","doi":"10.1109/IEMDC47953.2021.9449587","DOIUrl":null,"url":null,"abstract":"The driving electric machine of high-power flywheel energy storage system (FESS) has the characteristics of high fundamental frequency and low inductance, which lead to high current harmonic content and increases the loss of FESS. To suppress the current harmonics, a compound control scheme is proposed for an innovative hybrid converter in this paper. The mathematical model of the hybrid converter is analyzed and divided into two parts: main voltage source converter (MVSC) and filtering voltage source converter (FVSC). According to the characteristics of MVSC and FVSC in output power and switching frequency, two different regular sampling strategies are described and applied. On this basis, the exact MVSC model in discrete time-domain is established, and the current controller with complex vector decoupling is designed. Similarly, a current controller with feedback decoupling is designed for FVSC in the continuous time-domain. Both the current controllers have excellent robustness and dynamic response ability. Finally, the proposed control strategy in this paper is verified by simulation results.","PeriodicalId":106489,"journal":{"name":"2021 IEEE International Electric Machines & Drives Conference (IEMDC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE International Electric Machines & Drives Conference (IEMDC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IEMDC47953.2021.9449587","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

The driving electric machine of high-power flywheel energy storage system (FESS) has the characteristics of high fundamental frequency and low inductance, which lead to high current harmonic content and increases the loss of FESS. To suppress the current harmonics, a compound control scheme is proposed for an innovative hybrid converter in this paper. The mathematical model of the hybrid converter is analyzed and divided into two parts: main voltage source converter (MVSC) and filtering voltage source converter (FVSC). According to the characteristics of MVSC and FVSC in output power and switching frequency, two different regular sampling strategies are described and applied. On this basis, the exact MVSC model in discrete time-domain is established, and the current controller with complex vector decoupling is designed. Similarly, a current controller with feedback decoupling is designed for FVSC in the continuous time-domain. Both the current controllers have excellent robustness and dynamic response ability. Finally, the proposed control strategy in this paper is verified by simulation results.

查看原文本刊更多论文

抑制电流谐波的混合变换器电流控制系统

大功率飞轮储能系统的驱动电机具有高基频和低电感的特点，导致电流谐波含量高，增加了飞轮储能系统的损耗。为了抑制电流谐波，本文提出了一种新型混合变换器的复合控制方案。分析了混合变换器的数学模型，将其分为主电压源变换器(MVSC)和滤波电压源变换器(FVSC)两部分。根据MVSC和FVSC在输出功率和开关频率上的特点，描述并应用了两种不同的规则采样策略。在此基础上，建立了离散时域的精确MVSC模型，设计了复向量解耦电流控制器。同样，针对连续时域的FVSC设计了反馈解耦的电流控制器。两种电流控制器都具有良好的鲁棒性和动态响应能力。最后，通过仿真结果验证了本文提出的控制策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2021 IEEE International Electric Machines & Drives Conference (IEMDC)

自引率

0.00%

发文量