TY - JOUR
T1 - Research on the torque and back EMF performance of a high speed PMSM used for flywheel energy storage
AU - Zhao, Jing
AU - Gu, Zhongxin
AU - Li, Bin
AU - Liu, Xiangdong
AU - Li, Xiaobei
AU - Chen, Zhen
N1 - Publisher Copyright:
© 2015 by the authors.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
KW - Back electromotive force (EMF)
KW - Cogging torque
KW - Flywheel energy storage (FES)
KW - High speed
KW - Permanent-magnet synchronous machine (PMSM)
KW - Taguchi method
KW - Torque ripple
UR - http://www.scopus.com/inward/record.url?scp=84928670388&partnerID=8YFLogxK
U2 - 10.3390/en8042867
DO - 10.3390/en8042867
M3 - Article
AN - SCOPUS:84928670388
SN - 1996-1073
VL - 8
SP - 2867
EP - 2888
JO - Energies
JF - Energies
IS - 4
ER -