Implementation of a Three-Phase Switched Reluctance Generator System for Wind Power Applications

The paper presents a developed switched reluctance wind power generator system. The block diagram and the elements of the system, such as generator, rotor position detector, excitation power converter and controller are described. The transient phase current analysis and the energy analysis of the switched reluctance generator are evaluated. The rotor position and the peak value of the phase current at three different conditions are given. The closed-loop output power control of the switched reluctance wind power generator system implemented by regulating the turn-on angle of the main switches with fuzzy logic algorithm and fixed turn-off angle of the main switches at a precisely optimized value is presented. There are two input control parameters in the fuzzy logic algorithm, namely the deviation of the average DC output current and the variation of the deviation of the average DC output current. The output control parameter of the fuzzy logic algorithm is the increment of the turn-on angle of the main switches. The photographs of the developed 500 W prototype are also given. The tested results show that the error of the closed-loop output power control is within 2.2%, while the rotor speed range is close to the ratio of 1 to 3 with the low rotor speed 405 r/min.