Optimal Current Control Methods of a Non-Salient Pole Hybrid Field Synchronous Motor for Energy-Efficient and Wide Speed-Range Operation

• Shinnaka Shinji

  Dept. of Electrical Engineering, Kanagawa University

• Sagawa Takayuki

  Dept. of Electrical Engineering, Kanagawa University

Bibliographic Information

Other Title

• 非突極ハイブリッド界磁同期モータの高効率·広範囲運転のための電流制御法
• 非突極ハイブリッド界磁同期モータの高効率・広範囲運転のための電流制御法
• ヒトツキョク ハイブリッド カイジ ドウキ モータ ノ コウコウリツ コウハンイ ウンテン ノ タメ ノ デンリュウ セイギョホウ

Abstract

This paper proposes new practical optimal current control methods for a newly emerging class of non-salient pole synchronous motors with hybrid rotor fields by both permanent magnet and winding. In practical situation with limited voltage, the extensively used permanent magnet synchronous motor hardly achieves an ideal performance that allows simultaneously both low-speed high-torque and wide speed-range operations, due to its constant magnet field. The hybrid field synchronous motors (HFSM) are recently emerging to achieve the ideal performance as practical motors with controllable hybrid rotor field. For HFSM, the same torque can be produced by a variety of currents due to nonlinearity between torque and currents. Consequently, appropriate determination of a set of stator and rotor current commands plays a key role to achieve possible energy-efficient and wide speed-range operation. Proposed methods determine the current commands corresponding to a given torque command such that total winding copper loss due to stator and rotor currents can be minimized if the exact solution exists, the best approximate torque can be produced if no exact solution exists. The determined current commands are the optimal in sense of energy-efficiency or degree of approximation in wide speed-range operation under voltage limit. New real-time recursive algorithms searching the optimal current solution are also given. The proposed methods are analytical but practical, whose usefulness is verified through experiments.

Journal

• IEEJ Transactions on Industry Applications

  IEEJ Transactions on Industry Applications 124 (6), 536-548, 2004

  The Institute of Electrical Engineers of Japan

Keywords

• hybrid field
• synchronous motor
• current command
• wide speed-range operation
• efficient operation

Details

• CRID: 1390282679633714560
• NII Article ID: 10013069954
• NII Book ID: AN10012320
• DOI: 10.1541/ieejias.124.536
• ISSN: 13488163
• ISSN: 09136339
• NDL BIB ID: 6971204
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6971204
• Web Site: https://www.jstage.jst.go.jp/article/ieejias/124/6/124_6_536/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed