Performance Analysis and Optimization of Built-In Permanent Magnet and Salient-Pole Electromagnetic Hybrid Excitation Generators for Vehicles

Table 3

Optimization parameters and their value range.

Optimization parameters	Value range
Rotor eccentricity	14 mm∼16 mm
Outer length of semicircular annular PM steel	1 mm∼1.2 mm
The inner diameter of semicircular annular PM steel	2.6 mm∼2.8 mm
The inclination angle of rectangular PM steel	54∼56
Pole-arc coefficient	0.76∼0.82