Paper Title:
Design and FEM Analysis of a High Efficiency Axial-Flux Brushless DC Motor for Flywheel System
  Abstract

A high efficiency axial-flux brushless DC motor assisted by self axial magnetic bearing and used in flywheel energy storage system is proposed in this paper. In this design, the rotor with composite rim acts as the flywheel of the system and is sandwiched between two disk type stators which are made of amorphous metal to reduce iron losses. The dual-stator machine combines the functions of axial flux brushless DC motor and axial magnetic bearing to rotate the flywheel-rotor and levitate it in vertical orientation. The other four degrees of freedom in radial directions are constrained by ceramic ball bearings for simple operation, high efficiency and long life span. Optimized design approaches are employed to achieve low losses, and high power density. Three-dimensional FEM analyses are implemented, and the analysis results support the feasibility of the proposed motor.

  Info
Periodical
Key Engineering Materials (Volumes 480-481)
Edited by
Yanwen Wu
Pages
1099-1104
DOI
10.4028/www.scientific.net/KEM.480-481.1099
Citation
C. Zhang, G. Z. Zhao, "Design and FEM Analysis of a High Efficiency Axial-Flux Brushless DC Motor for Flywheel System", Key Engineering Materials, Vols. 480-481, pp. 1099-1104, 2011
Online since
June 2011
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Price
$32.00
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