A Novel Maximum Power Point Tracking Control for Permanent Magnet Direct Drive Wind Energy Conversion Systems

Energies

Ying Zhu¹  Ming Cheng²  Wei Hua¹ 

[1]Department of Electrical Engineering, Southeast University, No 2 Si Pai Lou, Nanjing 210096, Jiangsu, China

关键词: direct drive;    permanent magnet synchronous generator (PMSG);    wind energy conversion system (WECS);    maximum power point tracking (MPPT);   

DOI  :  10.3390/en5051398

来源: mdpi

【 摘 要 】

This paper proposes a novel optimal current given (OCG) maximum power point tracking (MPPT) control strategy based on the theory of power feedback and hill climb searching (HCS) for a permanent magnet direct drive wind energy conversion system (WECS). The presented strategy not only has the advantages of not needing the wind speed and wind turbine characteristics of the traditional HCS method, but it also improves the stability and accuracy of MPPT by estimating the exact loss torque. The OCG MPPT control strategy is first carried out by simulation, then an experimental platform based on the dSPACE1103 controller is built and a 5.5 kW permanent magnet synchronous generator (PMSG) is tested. Furthermore, the proposed method is compared experimentally with the traditional optimum tip speed ratio (TSR) MPPT control. The experiments verify the effectiveness of the proposed OCG MPPT strategy and demonstrate its better performance than the traditional TSR MPPT control.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.