Optimization and Design of Super Hybrid Stepping Motor Based on the 3D Finite Element Analysis

The three dimensional finite element analysis can accurately calculate the static performance of super hybrid stepping motors such as back-EMF and holding torque. This paper uses Opera electromagnetic analysis software to analyze a two-phase 50-pair-pole super hybrid stepping motor, analyzes the working mechanism of the increase of holding torque and obtains the holding torque characteristic curve. The magnetic flux of tooth layer is much higher than ordinary hybrid stepping motor. Simultaneously, this paper analyzes the effect of the ratio of tooth width to tooth pitch and ratio of tooth height to tooth pitch on motor torque separately. The tooth shape is optimized while other dimensions remain unchanged, and the optimal ratios are obtained.