Zero/low speed magnet magnetization state estimation using high frequency injection for a fractional slot variable flux-intensifying interior permanent magnet synchronous machine

Chen Yen Yu, Takashi Fukushige, Apoorva Athavale, Brent Gagas, Kan Akatsu, David Reigosa, Robert D. Lorenz

研究成果: Conference contribution

14 被引用数 (Scopus)

抄録

This paper focuses on zero/low speed magnetization state (MS) estimation using high frequency injection for a fractional slot variable flux-intensifying interior permanent magnet synchronous machine (VTI-IPMSM). For VFI-IPMSMs, the knowledge of the MS is necessary to achieve loss minimizing control, since loss properties vary with MS. The MS can be estimated by measuring EMF, however, voltage sensors are not commonly used in standard drives. If a flux observer is used, accurate estimation is difficult at zero/low speed due to the diminishing EMF signal. To solve this issue, a superimposed high frequency (HF) injection method for MS estimation is proposed. Physically, higher MS implies a higher saturation condition which results in lower differential inductance. With a constant HF voltage injection, lower inductance (higher MS) results in a larger HF current response and vice versa. As a result, by imposing a HF voltage signal, the MS can be estimated through the HF current response. The proposed MS estimation methodology is evaluated experimentally with a fabricated fractional slot VFI-IPMSM and demonstrates effective MS estimation within 5 % error.

本文言語English
ホスト出版物のタイトル2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014
出版社Institute of Electrical and Electronics Engineers Inc.
ページ2495-2502
ページ数8
ISBN(電子版)9781479956982
DOI
出版ステータスPublished - 2014 11 11

出版物シリーズ

名前2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014

ASJC Scopus subject areas

  • 燃料技術
  • エネルギー工学および電力技術

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