DESIGN AND ANALYSIS OF A BEARINGLESS PERMANENT-MAGNET MACHINE WITH IMPROVED TORQUE DENSITY FOR STIRRED TANK BIOREACTOR
Author(s) -
Ying Zhang,
Yonghong Huang,
Ye Yuan,
Jianhua Luo,
Xiaodong Chen
Publication year - 2017
Publication title -
progress in electromagnetics research m
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 31
ISSN - 1937-8726
DOI - 10.2528/pierm17031906
Subject(s) - magnet , bioreactor , torque , materials science , nuclear engineering , mechanical engineering , physics , chemistry , engineering , thermodynamics , organic chemistry
A novel bearingless stirring permanent-magnet (PM) (BSPM) machine is proposed in this paper, which can offer high torque density, high efficiency, simple structure, and low cost. The novelty of the proposed machine is to provide a clean environment and no pinch-off areas in a stirred tank bioreactor and integrate appropriate magnetization directions of the PMs in the rotor. Firstly, the topology and operational principle of the proposed machine are described in detail. Then, the machine is designed for a given set of specifications, and its electromagnetic performances are analyzed by timestepped transient finite-element method (FEM). Next, after the analysis of loss, a thermal simulation is established, complying with the design requirements. Finally, the efficiency and power factor map of the proposed BSPM machine are simulated for validation.
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