Ripple Analysis and Suppression Method Research of Direct Drive Permanent Magnet Synchronous Wind Turbine under Wind Shear

Zhiyong Li, Xin Wang, Guohang Huang, Hui Wan and Yougen Chen
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Zhiyong Li: School of Automation, Central South University, Changsha 410083, China
Xin Wang: School of Automation, Central South University, Changsha 410083, China
Guohang Huang: School of Automation, Central South University, Changsha 410083, China
Hui Wan: School of Automation, Central South University, Changsha 410083, China
Yougen Chen: School of Automation, Central South University, Changsha 410083, China

Energies, 2020, vol. 13, issue 19, 1-15

Abstract: Wind shear is among the important sources of torque fluctuation on mechanical side and output power fluctuation on electromagnetic side and grid connection point, which frequency are triple turbine rotation frequency. With the increase in wind turbine single capacity and wind power integration scale, the power fluctuation caused by wind shear cannot be ignored. The paper takes a direct-drive permanent magnet synchronous wind turbine (PMSWT) as the research object. Firstly, the fluctuation transfer mechanism model is established; then, the current ripple is extracted by a notch filter to calculate the voltage control signal to suppress power fluctuation actively by the DC link capacitor which absorbs fluctuation energy. The simulation experiment shows that the suppression strategy is effective and reliable.

Keywords: wind shear; triple frequency ripple; PMSWT; notch filter; active suppression method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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