SIMULATION AND ANALYSIS OF PERMANENT MAGNET SYNCHRONOUS GENERATOR FOR RENEWABLE ENERGY UTILIZATION

This paper deals with the simulation of dynamic model of permanent magnet synchronous generator (PMSG) in D-Q axes of the rotor rotating reference frame. The iron core losses and stray load losses of the machine are taken into account. The iron core losses are represented by iron core resistance connected in parallel with magnetizing inductance and then reflected into the stator side as a voltage drop to prevent increasing the number of differential equations in the model. The modified equivalent circuit can deal with all machine parameters without losing the accuracy of generator performance calculations. The modified equivalent circuit can be used as an efficient tool for analysis, design, and vector control algorithm of this type of generator, especially in renewable energy utilization. The model is executed by Matlab Simulink and very good results are obtained and compared with the results of the experimental model to display the validity and accuracy of the proposed dynamic model.