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This paper presents the dual excited synchronous generator (DESG) as a novel suitable alternative generation system in wind energy conversion systems. A new control strategy has been proposed for the DESG wind turbine system. With this control technique, the DESG could be operated as a constantspeed constant-frequency (CSCF) generation system with the benefit of adjusting the reactive power or a variable-speed constant-frequency (VSCF) generation system with the benefits of simple control methods and lower copper losses. Using the space phasor model of DESG, a direct relationship between the electromechanical torque and the armature reactive power in terms of the field current space phasor magnitude and the field voltage space phasor angle is provided. The proposed control strategy is based on controlling the field current space phasor magnitude and the field voltage space phasor phase angle to regulate the active and reactive powers of the DESG. Simulation results, based on MATLAB/SIMULINK, for a 1.1 kW DESG wind turbine system have been executed to verify the introduced control technique under various operating conditions. Also, experimental studies have been carried out to validate the simulation results using the proposed control algorithm.INDEX TERMS Wind energy conversion system, Dual excited synchronous generator. Reactive power control, Maximum power point tracking.

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