Novel High-Performance Switched Flux Hybrid Magnet Memory Machines With Reduced Rare-Earth Magnets

This paper proposes two high-performance switched flux hybrid magnet memory machines (SF-HMMMs) based on the design concepts of E-core and C-core SF permanent magnet (PM) machine topologies. Since two kinds of PMs (i.e., NdFeB and low coercive force magnets) are employed, the proposed machines can o...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2016-09, Vol.52 (5), p.3901-3915
Main Authors: Hui Yang, Zhu, Z. Q., Heyun Lin, Di Wu, Hao Hua, Shuhua Fang, Yun-kai Huang
Format: Article
Language:English
Subjects:
High performance
Magnetic flux
Magnetic hysteresis
memory machine
Motors
permanent magnet (PM) machines
Rotors
Stator windings
switched flux (SF)
Topology
Torque
variable flux
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Summary:This paper proposes two high-performance switched flux hybrid magnet memory machines (SF-HMMMs) based on the design concepts of E-core and C-core SF permanent magnet (PM) machine topologies. Since two kinds of PMs (i.e., NdFeB and low coercive force magnets) are employed, the proposed machines can offer the merits of high torque capability, excellent flux adjustability, and high efficiency across a wide speed range. In this paper, the PM arrangement and dimensions, stator/rotor pole number combination, as well as the major design parameters are optimized first. Then, the electromagnetic characteristics of the proposed machines are investigated and compared with their conventional 12-stator pole SF-HMMM. It is found that compared with their conventional 12-stator pole counterpart, the proposed machines offer improved torque density and flux adjustability, even with the reduced PM usage. Finally, two machine prototypes are manufactured and tested to validate the analyses.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2016.2582819