期刊
ENERGIES
卷 5, 期 5, 页码 1398-1412出版社
MDPI
DOI: 10.3390/en5051398
关键词
direct drive; permanent magnet synchronous generator (PMSG); wind energy conversion system (WECS); maximum power point tracking (MPPT)
资金
- National Natural Science foundation of China [50977011, 51137001]
- Innovative Scholar Ascent Program of Jiangsu Province, China [BK2010013]
- Scientific Research innovation plan for Graduate students in Jiangsu Province [CXLX_0109]
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.
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