Dual Rotor Radial Flux Concentrated Wound Permanent Magnet Synchronous Machine with High Power Density

Abstract

A study of a dual rotor radial flux, fractional slot concentrated wound permanent magnet synchronous machine is presented in this paper. The proposed structure is analyzed in two different magnetic polarity configurations of the opposing rotors poles, for performance evaluation. 2D and 3D Finite Element Method simulation results are presented along with experimental validation tests performed on physical prototype under different working conditions, for both considered configurations. The main goal was to achieve a higher power density for the machine. In addition to this, production cost reduction by modularity fabrication techniques, and increasing efficiency through the use of grain-oriented electric steel were considered and studied.

Keywords

• dual rotor machine
• finite element analysis
• fractional-slot concentrate-wound permanent magnet synchronous machine
• high power density
• grain-oriented electric steel