Title :
Design and Analysis of a New Magnetic-Geared Memory Machine
Author :
Chunhua Liu ; Chau, K.T. ; Chun Qiu
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
In this paper, a new hybrid-structure machine, namely magnetic-geared memory (MGM) machine, is proposed. It artfully integrates the magnetic-gearing effect and flux-mnemonic capability together. The design is to adopt the hybrid-structure which incorporates the flux-modulation ring, dual-magnets and magnetizing winding. In this way, the flux-modulation ring is able to modulate the high-speed armature rotating field to the low-speed permanent magnet (PM) rotor. Meanwhile, the electromagnetic field which is generated by the dual-magnets of NdFeB and AlNiCo can be online tuned by the magnetizing winding. Thus, the proposed machine achieves the merits of both high-torque production and wide-speed operation. Finite element analysis is employed to verify the validity of the proposed MGM machine. Also, a parallelogram hysteresis model is built for the AlNiCo PM.
Keywords :
aluminium alloys; boron alloys; cobalt alloys; electromagnetic fields; finite element analysis; hysteresis; iron alloys; neodymium alloys; nickel alloys; permanent magnet machines; permanent magnets; rotors; torque; AlNiCo; MGM; NdFeB; dual magnets; electromagnetic field; finite element analysis; flux modulation ring; flux-mnemonic capability; high speed armature; hybrid structure machine; magnetic-geared memory machine; magnetizing winding; parallelogram hysteresis model; permanent magnet rotor; Magnetic flux; Magnetic hysteresis; Magnetomechanical effects; Rotors; Superconducting magnets; Torque; Windings; Flux control; hybrid-structure machine; hysteresis model; magnetic-geared machine; memory machine;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2013.2295680
