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Comprehensive control strategy for a variable speed cage machine wind generation unit

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3 Author(s)
M. Karrari ; Dept. of Electr. Eng., Amirkabir Univ. of Technol., Tehran, Iran ; W. Rosehart ; O. P. Malik

A comprehensive control strategy, that addresses all three control objectives in a wind generation system, i.e. control of the local bus voltage to avoid voltage rise, capture of the maximum power in the wind and minimization of the power loss in the induction generator is proposed. The control signals are the desired current wave shapes (instantaneous three-phase currents) of the rectifier and the inverter in a double-sided PWM converter system connected between the wind generating unit and the grid. Studies performed on a complete model for a variable speed cage machine wind generation unit, including wind profile, wind turbine, induction generator, PWM converter, local load and transmission line, show that even as the wind speed changes randomly, the proposed control strategy leads the system to the optimum operating conditions.

Published in:

IEEE Transactions on Energy Conversion  (Volume:20 ,  Issue: 2 )