A High Efficiency Wind Energy System

Fig. 1. Components of Wind Energy System

Fig. 4. Switching Pattern of SHE SPWM

techniques due to two significant benefits. Research results

obtained demonstrates that by combining a PMSG wind

turbine, four-phase interleaved bi-directional DC - DC

converter and SHE SPWM based inverter, a high efficiency

wind energy generation system can be realized. Due to the

use of the bi-directional converter, inverter output will

remain constant under varied wind velocity. The use of SHE

SPWM results in almost free of harmonics distortion (figure

5), reduction in switching losses and output filtering

requirement is minimized.

R

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