Performance Evaluation of Permanent Magnet Vemier Generator Based on Modified Winding Function Method

Permanent Magnet Vernier Generators (PMVGs) are suitable choice for wind turbine applications. High power density, direct drive and low-speed operation are exceptional features that make PMVGs appropriate choice for wind applications. However, PMVGs suffer from high voltage regulation. To overcome this problem, usually compensating capacitor is employed. The capacitance of the capacitor is calculated based on the synchronous inductance of the PMVG. So, it is required to exactly calculate the inductance of the generator. In this paper, modified winding function method (MWFM) is used for calculating the inductances. The proposed model is verified using 3-D time stepping finite element analysis (3-D TSFEA) and the experimental test on prototype of the generator. Good agreement between simulation and experimental results is obtained indicating the success of the presented analysis.