• Home|About JOPS|Editorial Board| Ethics Statement|Indexed-in|Contact us|Peer Review|Chinese
Latest Papers more>>
ZHANG Chao,CHEN Yongqiang,BAO Xiaoting,FANG Yong,YANG Junhua.Research on PMSG Control Strategy Under Asymmetric Faults Based on Super Capacitor Energy Storage System[J].JOURNAL OF POWER SUPPLY,2021,19(2):185-192
Research on PMSG Control Strategy Under Asymmetric Faults Based on Super Capacitor Energy Storage System
Received:September 15, 2018  Revised:October 10, 2020
View Full Text  View/Add Comment  Download reader
DOI:10.13234/j.issn.2095-2805.2021.2.185
Keywords:super capacitor energy storage system  permanent magnet synchronous wind turbine  asymmetric fault  double second-order generalized integrator phase-locked loop
Fund Project:
              
AuthorInstitutionEmail
ZHANG Chao School of Electrical Engineering and Electronic Information, Xihua University, Chengdu , China 847253470@qq.com
CHEN Yongqiang School of Electrical Engineering and Electronic Information, Xihua University, Chengdu , China
BAO Xiaoting School of Electrical Engineering and Electronic Information, Xihua University, Chengdu , China
FANG Yong School of Electrical Engineering and Electronic Information, Xihua University, Chengdu , China
YANG Junhua State Grid Meishan Power Supply Company, Meishan , China
Hits: 74
Download times: 115
Abstract:
      To improve the low voltage ride-through (LVRT) capability of direct-drive permanent magnet synchrono-us wind turbines, a novel improved control strategy based on super capacitor energy storage system is proposed by analyzing the mechanism of double power-frequency component generated under grid voltage asymmetry faults. Based on the idea of power balance, the super capacitor energy storage system is used on the DC-side, and the control strategy of power outer-loop current inner-loop is adopted to achieve the smooth control of unbalanced power accumulated on the DC-side under asymmetric faults. At the same time, the double second-order generalized integrator phase-locked loop(PLL) is used on the grid-side to replace the single-phase PLL in the traditional method, thereby realizing the accurate measurement of positive- and negative-sequence fundamental wave components under asymmetric faults. Simulation results based on Matlab/Simulink show that the proposed control strategy can effectively suppress the grid-side active power and DC-side voltage double power-frequency fluctuations under asymmetric faults and improve the system's LVRT capability under asymmetric faults, which demonstrates the effectiveness of the proposed improved control strategy.
Close