Design and Analysis of a Novel Partitioned Stator Hybrid Excitation Machine

Zhongze Wu, Ziqiang Zhu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper proposes a new partitioned stator hybrid excitation (PSHE) machine. The conventional single stator-HE machine suffers from the space conflict between field sources, i.e. permanent magnets (PMs), wound field (WF) winding, and armature windings, which are all placed in a single stator. In the proposed PSHE machine, they were separately accommodated in two different stators, between which a rotor consisted of segmented iron pieces was sandwiched. The paper presented design consideration and performance in terms of flux weakening capability, torque enhancement capability, and PM torque without WF winding current. It shows that by introducing iron flux bridges in the inner stator tooth for WF winding magnetomotive force, better hybrid excitation between the PMs and the WF windings can be achieved, resulting in 79.39% flux weakening capability and 79.12% torque enhancement capability, whilst those of the PSHE machine without iron flux bridge are only 12.80% and 12.12%, respectively. A prototype was built and tested to verify the finite element predicted results.

Original languageEnglish
Pages (from-to)6543-6556
Number of pages14
JournalZhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
Volume37
Issue number22
DOIs
Publication statusPublished - 20 Nov 2017

Keywords

  • Flux adjusting capability
  • Flux weakening capability
  • Hybrid excitation
  • Partitioned stator
  • Rotor iron piece
  • Torque enhancement capability

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

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title = "Design and Analysis of a Novel Partitioned Stator Hybrid Excitation Machine",
abstract = "This paper proposes a new partitioned stator hybrid excitation (PSHE) machine. The conventional single stator-HE machine suffers from the space conflict between field sources, i.e. permanent magnets (PMs), wound field (WF) winding, and armature windings, which are all placed in a single stator. In the proposed PSHE machine, they were separately accommodated in two different stators, between which a rotor consisted of segmented iron pieces was sandwiched. The paper presented design consideration and performance in terms of flux weakening capability, torque enhancement capability, and PM torque without WF winding current. It shows that by introducing iron flux bridges in the inner stator tooth for WF winding magnetomotive force, better hybrid excitation between the PMs and the WF windings can be achieved, resulting in 79.39{\%} flux weakening capability and 79.12{\%} torque enhancement capability, whilst those of the PSHE machine without iron flux bridge are only 12.80{\%} and 12.12{\%}, respectively. A prototype was built and tested to verify the finite element predicted results.",
keywords = "Flux adjusting capability, Flux weakening capability, Hybrid excitation, Partitioned stator, Rotor iron piece, Torque enhancement capability",
author = "Zhongze Wu and Ziqiang Zhu",
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AU - Zhu, Ziqiang

PY - 2017/11/20

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N2 - This paper proposes a new partitioned stator hybrid excitation (PSHE) machine. The conventional single stator-HE machine suffers from the space conflict between field sources, i.e. permanent magnets (PMs), wound field (WF) winding, and armature windings, which are all placed in a single stator. In the proposed PSHE machine, they were separately accommodated in two different stators, between which a rotor consisted of segmented iron pieces was sandwiched. The paper presented design consideration and performance in terms of flux weakening capability, torque enhancement capability, and PM torque without WF winding current. It shows that by introducing iron flux bridges in the inner stator tooth for WF winding magnetomotive force, better hybrid excitation between the PMs and the WF windings can be achieved, resulting in 79.39% flux weakening capability and 79.12% torque enhancement capability, whilst those of the PSHE machine without iron flux bridge are only 12.80% and 12.12%, respectively. A prototype was built and tested to verify the finite element predicted results.

AB - This paper proposes a new partitioned stator hybrid excitation (PSHE) machine. The conventional single stator-HE machine suffers from the space conflict between field sources, i.e. permanent magnets (PMs), wound field (WF) winding, and armature windings, which are all placed in a single stator. In the proposed PSHE machine, they were separately accommodated in two different stators, between which a rotor consisted of segmented iron pieces was sandwiched. The paper presented design consideration and performance in terms of flux weakening capability, torque enhancement capability, and PM torque without WF winding current. It shows that by introducing iron flux bridges in the inner stator tooth for WF winding magnetomotive force, better hybrid excitation between the PMs and the WF windings can be achieved, resulting in 79.39% flux weakening capability and 79.12% torque enhancement capability, whilst those of the PSHE machine without iron flux bridge are only 12.80% and 12.12%, respectively. A prototype was built and tested to verify the finite element predicted results.

KW - Flux adjusting capability

KW - Flux weakening capability

KW - Hybrid excitation

KW - Partitioned stator

KW - Rotor iron piece

KW - Torque enhancement capability

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