The output voltage of the combined pole permanent magnet generator is mainly affected by the air gap magnetic density. Because the generator has stator slots and pole distances, there are harmonics in the air gap magnetic density and output voltage waveform, and the peak and sinusoidal characteristics of the waveform are not ideal. The radial distribution function of the air gap magnetic density is derived through the Carter coefficient, and the permanent magnet size, the shape of the magnetic separation slot the structure parameters such as air gap length and stator slot width are simulated and optimized, and the output characteristics of permanent magnet generator are compared with different parameter values to determine the optimal value of structure parameters, so as to improve the output performance of permanent magnet generator.

Full text: IJEIR_2946_FINAL.pdf