Efficiency Contours and Loss Minimization Over a Driving Cycle of a Variable Flux-Intensifying Machine

Takashi Fukushige, Natee Limsuwan, Takashi Kato, Kan Akatsu, Robert D. Lorenz

研究成果: Article査読

59 被引用数 (Scopus)

抄録

In this paper, experimental evaluations for the efficiency of a novel interior permanent-magnet (IPM) machine with variable-flux characteristics using low-coercive-force magnets are presented. The variable-flux characteristics allow improving the efficiency of a machine. A flux-intensifying IPM type having positive saliency is employed for a positive d-axis current to mitigate a demagnetizing field in the magnet due to a q-axis current. A proof-of-principle machine is designed, fabricated, and evaluated. A series of experiments are conducted to capture the magnetization and demagnetization properties of the low-coercive-force magnets by applying control d-axis current pulse. The efficiency contours with different magnetization states (MSs)of the magnets are then experimentally obtained. The designed machine shows benefits in improving efficiency when the MS is optimally operated. With these results, the loss over a driving cycle is then simulated, and the benefits of changing the MS are quantified.

本文言語English
論文番号07046393
ページ(範囲)2984-2989
ページ数6
ジャーナルIEEE Transactions on Industry Applications
51
4
DOI
出版ステータスPublished - 2015 7 1

ASJC Scopus subject areas

  • 電子工学および電気工学
  • 制御およびシステム工学
  • 産業および生産工学

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