Finite element method analysis of Surface-Inserted Permanent Magnets Synchronous Generator

This paper proposes a novel model of Surface-Inserted Permanent Magnets Synchronous Generator, which has an adjustable air slots in the rotor. It improves the Permanent Magnets Synchronous Generator´s main disadvantage of difficult regulating voltage. Besides, this paper presents a new method to calculate the electromagnetic field distribution of Surface Inserted Permanent Magnets Synchronous Generator. In this method, the tooth flux of Surface-Inserted Permanent Magnets Synchronous Generator can be obtained by finite element calculation, and then the armature winding electromotive force (EMF) value and waveform can be exactly calculated. The paper simulates the permanent magnet generator which has the variable air slots by finite method, and analyzed the output voltage of air slot. This study shows that it can effectively improve the performance of permanent magnet generator because of improvement of machine structure.