Abstract

Changing trends towards wind power generation requires new and advanced models for control implementation for improved power quality, better reliability and increased efficiency. This paper emphasizes the performance comparison of three grid connected configurations of wind energy conversion systems using squirrel cage induction generator. Control designs using different types of machine side converters such as a diode rectifier, a diode rectifier with boost converter and a voltage source converter have been modeled, simulated and analyzed. A complete comparison of these configurations is presented in terms of the real and reactive power control and the power quality. Maximum power point tracking has been implemented in the latter two control designs so that optimum power is harnessed for given wind velocities. The simulation results exemplify the outstanding performance of the system with the use of back to back connected voltage source converters.

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