磁束変調型磁気ギヤの空隙磁束密度波形の実測と分析

抄録

  Magnetic gears, which can transmit power without any mechanical contact, offer lower vibration and acoustic noise compared with conventional mechanical gears. They also have an advantage in terms of maintenance. Among the various types of magnetic gears, the flux-modulated-type magnetic gear has recently garnered attention because of its higher torque density and efficiency. This gear consists of concentric inner and outer rotors and pole pieces placed between two rotors and works as a gear based on flux modulation theory. Therefore, measurement and analysis of the modulated fluxes in the air gaps are essential since these fluxes directly contribute to torque and efficiency. This paper presents a system for measuring flux density waveforms in the air gap of the flux-modulated-type magnetic gear. The measured waveforms are compared with those calculated using a finite element method (FEM).