Shenyan Huang¹, Min Zou², Wanming Zhang¹, Joseph Zierer¹, Anoop Jassal¹, Vandana Rallabandi¹, Steve Buresh¹, PR Subramanian¹; ¹GE Research, ²GE Global Research

Dual phase soft magnetic laminates benefit electric machine performance by reducing flux leakage in critical locations in the laminates. Driven by the market needs for high power density and high-speed electric machines, the performance of a synchronous reluctance (SynRel) machine using dual phase soft magnetic laminates together with different types of permanent magnets (PMs) was assessed. Finite element analysis of mechanical stress distribution in the dual phase laminate rotor was carried out to evaluate material’s mechanical strength requirement for the PM-assisted SynRel machines. The results suggest that dual phase soft magnetic materials with high mechanical strength, high saturation magnetization, high permeability, and low loss are highly desired for further improvement in machine performance. This talk will also present the current status and recent development within GE, including new alloy development, processing-properties-performance relationships, and additional applications.