Design and Analysis of Interior Permanent Magnet Two Degrees of Freedom Motor Based on Cross-Coupled Structure

Abstract

This paper proposes an interior permanent magnet two degrees of freedom (IPM 2-DOF) motor based on cross-coupled structure. The proposed motor generates force in z direction and torque in yaw direction. Moreover, the motor generates not only magnetic force but also reluctance force. This paper describes the structure of the proposed motor and the relationship between d-axis inductance, q-axis inductance, reluctance torque and reluctance force. The analysis with Finite Element Analysis (FEA) is conducted to verify effectiveness of the motor.