Performance analysis of the 2DoF direct drive induction motor applying composite multilayer method


This study presents a composite multilayer method (CMM) to evaluate the performance of a two-degree-offreedom (2DoF) direct drive induction motor (2DoFDDIM) whose solid rotor is coated with a copper layer. It includes a rotary part and a linear part. Based on the traditional multilayer theory, a complete 2DoFDDIM CMM computer program importing propagation constants is built. Due to the complex magnetic field in a 2DoFDDIM, this study mainly analyses it from the perspective of a single DOF motor. An equivalent circuit for the rotary part of the 2DoFDDIM is then derived applying CMM and the 2D magnetic field distribution is obtained by solving Maxwell's equations in motor layers. The developed torques, power factors and stator currents of the rotary part with different slips and the latter two of the linear part at zero speed are calculated by CMM, which are then compared with results from the finite element method (FEM) and experimental results. The computation time of the CMM is far less than that of the FEM. The acceptable accuracy confirms the effectiveness of the CMM for analysis and performance calculations of the 2DoFDDIM.

Publication DOI:
Divisions: Engineering & Applied Sciences
Additional Information: This paper is a postprint of a paper submitted to and accepted by IET Electric Power Applications and it is subject to Institution of Engineering and Technology Copyright.The copy of record is available at the IET Digital Library.
Uncontrolled Keywords: Electrical and Electronic Engineering
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2017-04-01
Accepted Date: 2017-01-13
Submitted Date: 2016-07-22
Authors: Si, Jikai
Xie, Lujia
Cao, Wenping ( 0000-0002-8133-3020)
Hu, Yihua
Feng, Haichao



Version: Accepted Version

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