Abstract
This paper presents a novel double-stator permanent-magnet machine integrated with a triple rotor magnetic gear structure, which is proposed to address problems of mechanical geared generators for low-speed applications. Torque transmission is based on three rotors consisting of prime permanent-magnet (PM) poles in the middle rotor and field PM poles in the inner and outer rotors. The proposed machine combines the functions of magnetic gearing and electrical power generation. The operating principles of the magnetic gear and generator are discussed and the torque distribution characteristics of the integrated machine are analysed using the 2D finite-element method (2D FEM). Also the power, torque, and speed characteristics are reported. A prototype is fabricated and tested experimentally. The predicted and measured results validate the proposed machine design.
Highlights
Electrical power generation from renewable energy is the focus of current research in the academia and industry
This paper has presented a novel magnetic geared double-stator permanent magnets (PMs) generator and the torque distribution characteristics were studied using two-dimensional finite element analysis
The power and speed characteristics were measured by the fabrication of a prototype
Summary
Electrical power generation from renewable energy is the focus of current research in the academia and industry. Energies 2016, 10, 2 mechanical gearstypes because of the advantages of inherent overloadradial protection, greater transmission proposed various of magnetic gear topologies, including flux magnetic gears, linear torque, gears, and oil-free maintenance. Chen [16] compared different topologies magnetic gears have been proposed [8,9,10,11,12,13,14,15] and their torque characteristics demonstrated with magnetic gears and concluded that the radial-flux configuration produces the greatest torque density, measured data. The operating principle of a magnetic gear is radial-flux configuration produces the greatest torque density, measured data were not similar to a mechanical gear as torque is transferred from a low-speed shaft to a high-speed shaft with reported in the study.
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