Research on the torque and back EMF performance of a high speed PMSM used for flywheel energy storage

Jing Zhao, Zhongxin Gu*, Bin Li, Xiangdong Liu, Xiaobei Li, Zhen Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Due to advantages such as high energy density, high power density, rapid charge and discharge, high cyclic-life, and environmentally friendly, flywheel energy storage systems (FESs) are widely used in various fields. However, the performance of FES systems depends on the performance of a high speed machine, therefore, the design and optimization of a high efficiency and high power density machine are very crucial to improve the performance of the whole FES system. In this paper, a high speed permanent-magnet synchronous machine (PMSM) is researched. Considering the requirement of low torque ripple in low speed and loss caused by back electromotive force (EMF) harmonics, the electromagnetic performance is improved from points of view of slot/pole matching, magnetic-pole embrace with the finite element method (FEM). Furthermore, the magnetic-pole eccentricity, the slot opening, the thickness of PM and air-gap length are also optimized with Taguchi method. The electromagnetic performance, such as torque ripple, cogging torque, average torque and back EMF wave are much improved after optimization. Finally, experiments are carried out to verify the calculated results.

Original languageEnglish
Pages (from-to)2867-2888
Number of pages22
JournalEnergies
Volume8
Issue number4
DOIs
Publication statusPublished - 2015

Keywords

  • Back electromotive force (EMF)
  • Cogging torque
  • Flywheel energy storage (FES)
  • High speed
  • Permanent-magnet synchronous machine (PMSM)
  • Taguchi method
  • Torque ripple

Fingerprint

Dive into the research topics of 'Research on the torque and back EMF performance of a high speed PMSM used for flywheel energy storage'. Together they form a unique fingerprint.

Cite this