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Voltage Control of an Autonomous Hybrid Generation Scheme Based on PV Array and Wind-Driven Induction Generators

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Hybrid distributed generators are increasingly found to supply reliable power in isolated locations. In this article, a DC-DC step-up converter for maintaining a constant load voltage in a hybrid PV array excited wind-driven induction generator is proposed. A closed loop PI controller is designed to automatically vary the duty-cycle of the DC-DC converter. A dynamic d - q axes model of the entire scheme is presented. Constant voltage regimes for varying irradiation and wind speed are obtained using the developed model. Further, close agreement between the experimental and simulated waveforms is established to demonstrate the veracity of the simulation.

Keywords: DC-DC converter; duty-cycle; photovoltaic array; wind-driven induction generator; wind-solar system

Document Type: Research Article


Affiliations: National Institute of Technology, Tiruchirappalli, India

Publication date: 2006-07-01

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