GA-Based Computer-Aided Electromagnetic Design of Two-Phase SRM for Compressor Drives

  • Kano Yoshiaki
    Nagoya Industrial Science Research Institute
  • Kosaka Takashi
    Dept. of Electrical and Computer engineering, Nagoya Institute of Technology
  • Matsui Nobuyuki
    Dept. of Electrical and Computer engineering, Nagoya Institute of Technology

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Other Title
  • GAによる圧縮機用二相SRMのコンピュータ援用最適電磁設計
  • GA ニ ヨル アッシュクキヨウ 2ソウ SRM ノ コンピュータ エンヨウ サイテキ デンジ セッケイ

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Abstract

This paper presents an approach to Genetic Algorithm (GA)-based computer-aided autonomous electromagnetic design of 2-phase Switched Reluctance Motor drives. The proposed drive is designed for compressor drives in low-priced refrigerators as an alternative to existing brushless DC motors drives with rare-earth magnets. In the proposed design approach, three GA loops work to optimize the lamination design so as to meet the requirements for the target application under the given constraints while simultaneously fine-tuning the control parameters. To achieve the design optimization within an acceptable CPU-time, the repeated-calculation required to obtain fitness evaluation in the proposed approach does not use FEM, but consists of geometric flux tube-based non-linear magnetic analysis and a dynamic simulator based on an analytical expression of the magnetizing curves obtained from the non-linear magnetic analysis. The design results show the proposed approach can autonomously find a feasible design solution of SRM drive for the target application from huge search space. The experimental studies using a 2-phase 8/6 prototype manufactured in accordance with the optimized design parameters show the validity of the proposed approach.

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