Quantitative Analysis of Hybrid-Excited Doubly Salient Machine With Subslot Bottom PMs and Its Comparative Study

Jifu Jiang, Shuangxia Niu, Xing Zhao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

This article proposes a doubly salient machine (DSM) with subslot bottom permanent magnets (PMs) to enhance the torque production. The key is that with auxiliary slot-PM excitation, the stator yoke dc saturation can be mitigated to enhance the torque production capability of dc field excitation, meanwhile additional slot-PM flux can be pushed into the airgap, which can build a parallel excitation and generate additional effective torque. Comparing dc-excited DSM and subslot bottom represents PM DSM (SBPM-DSM), the steady torque can be enhanced by 12.8% with the use of subslot bottom PMs. In this article, torque separation effects due to dc field excitation and slot-bottom PMs are quantitatively analyzed with frozen permeability method. By using time-stepping finite-element analysis, the electromagnetic performances of two machines are evaluated. Experimental results verify validity of the proposed design.

Original languageEnglish
Pages (from-to)4558-4569
Number of pages12
JournalIEEE Transactions on Industrial Electronics
Volume70
Issue number5
DOIs
Publication statusPublished - 1 May 2023

Keywords

  • Frozen permeability (FP)
  • subslot bottom PMs
  • torque separation

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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