Active damping control of PMSG with LCL filter in tidal generation system

2012 Power Engineering and Automation Conference Pub Date : 2012-09-01 DOI:10.1109/PEAM.2012.6612521

Luo Yaohua, D. Xiaoli, Xu Tie-yan, Lv Shijia

{"title":"Active damping control of PMSG with LCL filter in tidal generation system","authors":"Luo Yaohua, D. Xiaoli, Xu Tie-yan, Lv Shijia","doi":"10.1109/PEAM.2012.6612521","DOIUrl":null,"url":null,"abstract":"This paper has researched on the control strategy of PMSG direct-drive tidal generation system with LCL filter. Firstly, the model of PMSG (permanent magnet synchronous generator) with LCL filter is established in dq-frame, and then according to the analysis of the model, the equivalent circuit and admittance seen from the converter side in dq-frame is obtained. The bode figure shows that the LCL filter may resonance the harmonic current and even break the stability of whole system. One way to restrain the resonance is in parallel or in series a resistance with the capacitor in AC filters which is called passive damping. However, the physical resistance in passive damping will cause the energy loss. So an active damping strategy using a virtual resistance parallel with capacitor in LCL filter is proposed to restrain the resonance and reduce the stator current THD. Based on the active damping, the control system of PMSG is designed, in which the rotor speed is controlled and the unity power factor is realized. Finally, the simulation results have verified the effectiveness of the proposed control strategy.","PeriodicalId":130967,"journal":{"name":"2012 Power Engineering and Automation Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 Power Engineering and Automation Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PEAM.2012.6612521","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

This paper has researched on the control strategy of PMSG direct-drive tidal generation system with LCL filter. Firstly, the model of PMSG (permanent magnet synchronous generator) with LCL filter is established in dq-frame, and then according to the analysis of the model, the equivalent circuit and admittance seen from the converter side in dq-frame is obtained. The bode figure shows that the LCL filter may resonance the harmonic current and even break the stability of whole system. One way to restrain the resonance is in parallel or in series a resistance with the capacitor in AC filters which is called passive damping. However, the physical resistance in passive damping will cause the energy loss. So an active damping strategy using a virtual resistance parallel with capacitor in LCL filter is proposed to restrain the resonance and reduce the stator current THD. Based on the active damping, the control system of PMSG is designed, in which the rotor speed is controlled and the unity power factor is realized. Finally, the simulation results have verified the effectiveness of the proposed control strategy.

查看原文本刊更多论文

潮汐能发电系统LCL滤波器PMSG的主动阻尼控制

本文研究了带LCL滤波器的PMSG直接驱动潮汐发电系统的控制策略。首先在dq框架中建立了带LCL滤波器的永磁同步发电机模型，然后通过对模型的分析，得到了dq框架中变频器侧的等效电路和导纳。从波德图可以看出，LCL滤波器可能会引起谐波电流共振，甚至破坏整个系统的稳定性。抑制谐振的一种方法是与交流滤波器中的电容并联或串联一个电阻，称为无源阻尼。然而，被动阻尼中的物理阻力会造成能量损失。为此，提出了在LCL滤波器中并联虚拟电阻与电容的有源阻尼策略来抑制谐振，降低定子电流THD。设计了基于主动阻尼的永磁同步电机控制系统，实现了转子转速的控制和功率因数的统一。最后，仿真结果验证了所提控制策略的有效性。

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

2012 Power Engineering and Automation Conference

自引率

0.00%

发文量