Abstract
Hybrid autonomous power plants based on wind-driven induction generators excited by a photovoltaic (PV) array has been recently found to be a reliable power source for remote locations. In such schemes, a composite controller for both maximum power point tracking and voltage control has not been attempted so far. Hence a dc–dc converter with a dual control strategy of peak power tracking when the battery is connected and in voltage control mode in the absence of the battery is proposed in this paper. The development of such a controller is also presented. A d–q axes model of the proposed scheme is given and the results of the simulation of the entire scheme are also presented. The battery charging and discharging regimes have been distinctly identified for variations in irradiations and shaft-torque conditions. Close proximity between the calculated peak power for different irradiations and the peak power observed from the simulated results brings out the significance of the proposed controller. Copyright © 2006 John Wiley & Sons, Ltd.
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