Structure optimization for magnetic equipment of permanent magnet retarder

doi:10.1007/s11465-010-0112-z

Front Mech Eng Chin

2010, Vol. 5

Issue (4) : 442-445 https://doi.org/10.1007/s11465-010-0112-z

RESEARCH ARTICLE

Structure optimization for magnetic equipment of permanent magnet retarder

Bingfeng JIAO¹, Desheng LI¹, Yunkang SUI²(

), Lezhi YE¹

1. Mechanical & Electronic Technology Research Center, Beijing University of Technology, Beijing 100124, China; 2. Center for Engineering, Beijing University of Technology, Beijing 100124, China

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Abstract

The main purpose of this research is to perform a magnetic analysis on the magnetic equipment of permanent magnet retarder (PMR) and optimize the structure of magnetic equipment with the commercial FEM software ANSYS and its design optimization module. The FEM model is built as an axisymmetric model according to the characteristics of the structure of magnetic equipment. Using this model, the magnetic field distribution and magnetic force are calculated by ANSYS. The mathematical model of structure optimization is also built. The design variables are structural parameters including the dimensions of permanent magnets and magnetic yoke, and the objective function is the magnetic force. The unconstrained optimization model takes the maximum value of magnetic force as the objective. A first-order optimization method is used to determine the optimum design of this problem. The optimization process works entirely with the ANSYS parametric design language (APDL). The design tools are used to understand design space and the behavior of the dependent variables. It is shown that designing a structure with the ANSYS optimization module and its design tools is an effective means to improve the structure.

Keywords optimization ANSYS permanent magnet retarder numerical simulation

Corresponding Author(s): SUI Yunkang,Email:ysui@bjut.edu.cn

Issue Date: 05 December 2010

Cite this article:

Desheng LI,Yunkang SUI,Lezhi YE, et al. Structure optimization for magnetic equipment of permanent magnet retarder[J]. Front Mech Eng Chin, 2010, 5(4): 442-445.

URL:

https://academic.hep.com.cn/fme/EN/10.1007/s11465-010-0112-z
https://academic.hep.com.cn/fme/EN/Y2010/V5/I4/442

Fig.1 Disk-type PMR structure

Fig.2 1—rotor; 2—magnetic yoke; 3—permanent magnet; 4—short-circuit ring; 5—shell yoke; 6—stator
Structure of magnetic equipment

Fig.3 Geometric model of magnetic equipment

Tab.1 Initial value of design parameters

Fig.4 Finite element model

Fig.5 Distribution of flux lines of preliminary model

Tab.2 Optimization sets

Fig.6 Distribution of flux lines for optimized model

Fig.7 – curve

Fig.8 –curve

Tab.3 Comparison between preliminary design and optimized design

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