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Shape optimization of turbine blade to maximize the output power usually changes the power factor due to compensate Repower in a wind turbine. This article presents a multidisciplinary optimization technique to maximize the output power in Doubly Fed Induction Generator (DFIG) wind turbine. The most common parameters when operating the turbine, namely, active power, reactive power and power factor, are considered as the problem constraints and the pitch angle grid side variable frequency converter of the turbine blades are optimized to maximize the output power. Numerical simulation has been illustrated to present the performance of the proposed design approach.
The present paper deals with the modeling and control of Wind Energy
Conversion System WECS based Doubly Fed Induction Generator DFIG using the slip
energy recovery principle. The proposed drive system uses a Matrix Converter
(MC) to transfer the slip energy of the rotor into the mains instead of using cascaded ac-dc-ac converter whilst the stator
side is fixed to the grid. Operation at both sub-synchronous and
super-synchronous regions is possible with the proposed drive system. The
different level control strategies for maximum power point tracking and
active-reactive power are discussed. Simulation results of the proposed doubly
fed induction generator drive system show the good performance of the control
system strategy for both transient and steadystate conditions.