Rare earth reduction using a novel variable magnetomotive force, flux intensified IPM machine

Takashi Kato, Natee Limsuwan, Chenyen Yu, Kan Akatsu, Robert D. Lorenz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

This paper presents a novel variable magnetomotive force, flux intensifying IPM (VFI-IPM) machine which uses only low coercive force magnets to reduce usage of rare earth metals. The VFI-IPM machine is designed with a characteristic of Ld>Lq, which is typical for FI-IPM machines, and uses low coercive force magnets with magnetization level control. A theoretical magnet operating point analysis was conducted to investigate the design methodology. A proof-of-principle prototype machine was then designed based on these principles. Simulation results show that the VFI-IPM prototype can achieve a wide torque-speed envelope and variable torque-speed characteristics, while not requiring high coercive force magnets that would include far more expensive rare earth materials, such as dysprosium.

Original languageEnglish
Title of host publication2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012
Pages4346-4353
Number of pages8
DOIs
Publication statusPublished - 2012
Event4th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2012 - Raleigh, NC
Duration: 2012 Sep 152012 Sep 20

Other

Other4th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2012
CityRaleigh, NC
Period12/9/1512/9/20

    Fingerprint

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

Kato, T., Limsuwan, N., Yu, C., Akatsu, K., & Lorenz, R. D. (2012). Rare earth reduction using a novel variable magnetomotive force, flux intensified IPM machine. In 2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012 (pp. 4346-4353). [6342231] https://doi.org/10.1109/ECCE.2012.6342231