Analysis and Mitigation Strategies of Energy Backflow in an IPMSM Drive System With a Small DC-Link Capacitor

IF 1.5 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Jun Yan, Zi Qiang Zhu, Ximeng Wu, Han Yang, Lianghui Yang, Chaohui Liu
{"title":"Analysis and Mitigation Strategies of Energy Backflow in an IPMSM Drive System With a Small DC-Link Capacitor","authors":"Jun Yan,&nbsp;Zi Qiang Zhu,&nbsp;Ximeng Wu,&nbsp;Han Yang,&nbsp;Lianghui Yang,&nbsp;Chaohui Liu","doi":"10.1049/elp2.70029","DOIUrl":null,"url":null,"abstract":"<p>The energy backflow phenomenon is unavoidable in small dc-link capacitor-based PMSM drive systems, which is first identified and comprehensively analysed in this paper. This phenomenon occurs when the amplitude of the stator voltage exceeds the minimum value of the fluctuating dc-link voltage. To address this issue, flux weakening (FW) control can effectively reduce the stator voltage and mitigate the energy backflow phenomenon. However, dc-link voltage fluctuation can introduce several challenges to the conventional feedback FW control. For instance, a dc offset in the calculated d-axis reference current is identified in this paper due to the dc-link voltage fluctuation. Additionally, an analysis of the small-signal model reveals that when the fluctuating q-axis voltage becomes negative, it can lead to system instability. Moreover, the commonly used PI controller in FW control fails to adequately control the ac component introduced by these fluctuations. Therefore, this paper proposes an optimised FW control method to mitigate the energy backflow issues. Furthermore, an optimal phase angle selection method for the d-axis reference current, based on the least mean square algorithm and gradient descent algorithm, is introduced to suppress current ripple caused by the fluctuating dc-link voltage. Experimental results validate the effectiveness of the proposed optimised methods.</p>","PeriodicalId":13352,"journal":{"name":"Iet Electric Power Applications","volume":"19 1","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/elp2.70029","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iet Electric Power Applications","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1049/elp2.70029","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0

Abstract

The energy backflow phenomenon is unavoidable in small dc-link capacitor-based PMSM drive systems, which is first identified and comprehensively analysed in this paper. This phenomenon occurs when the amplitude of the stator voltage exceeds the minimum value of the fluctuating dc-link voltage. To address this issue, flux weakening (FW) control can effectively reduce the stator voltage and mitigate the energy backflow phenomenon. However, dc-link voltage fluctuation can introduce several challenges to the conventional feedback FW control. For instance, a dc offset in the calculated d-axis reference current is identified in this paper due to the dc-link voltage fluctuation. Additionally, an analysis of the small-signal model reveals that when the fluctuating q-axis voltage becomes negative, it can lead to system instability. Moreover, the commonly used PI controller in FW control fails to adequately control the ac component introduced by these fluctuations. Therefore, this paper proposes an optimised FW control method to mitigate the energy backflow issues. Furthermore, an optimal phase angle selection method for the d-axis reference current, based on the least mean square algorithm and gradient descent algorithm, is introduced to suppress current ripple caused by the fluctuating dc-link voltage. Experimental results validate the effectiveness of the proposed optimised methods.

Abstract Image

小直流电容IPMSM驱动系统能量回流分析及抑制策略
在基于直流电容的小型永磁同步电机驱动系统中,能量倒流现象是不可避免的,本文首次对这一现象进行了识别和综合分析。当定子电压的幅值超过直流链路波动电压的最小值时,就会发生这种现象。为了解决这一问题,磁链弱化(FW)控制可以有效降低定子电压,缓解能量回流现象。然而,直流链路电压波动会给传统的反馈FW控制带来一些挑战。例如,在计算的d轴参考电流中,由于直流链路电压波动,本文确定了直流偏移。此外,对小信号模型的分析表明,当波动q轴电压变为负值时,会导致系统不稳定。此外,FW控制中常用的PI控制器不能充分控制由这些波动引入的交流分量。因此,本文提出了一种优化的FW控制方法来缓解能量回流问题。在此基础上,提出了一种基于最小均方算法和梯度下降算法的d轴参考电流最佳相角选择方法,以抑制直流电压波动引起的电流纹波。实验结果验证了所提优化方法的有效性。
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
Iet Electric Power Applications
Iet Electric Power Applications 工程技术-工程:电子与电气
CiteScore
4.80
自引率
5.90%
发文量
104
审稿时长
3 months
期刊介绍: IET Electric Power Applications publishes papers of a high technical standard with a suitable balance of practice and theory. The scope covers a wide range of applications and apparatus in the power field. In addition to papers focussing on the design and development of electrical equipment, papers relying on analysis are also sought, provided that the arguments are conveyed succinctly and the conclusions are clear. The scope of the journal includes the following: The design and analysis of motors and generators of all sizes Rotating electrical machines Linear machines Actuators Power transformers Railway traction machines and drives Variable speed drives Machines and drives for electrically powered vehicles Industrial and non-industrial applications and processes Current Special Issue. Call for papers: Progress in Electric Machines, Power Converters and their Control for Wave Energy Generation - https://digital-library.theiet.org/files/IET_EPA_CFP_PEMPCCWEG.pdf
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信