Research on an axial-axial flux compound-structure PMSM with varying air gap to fulfill field-weakening control

Author

Jing Zhao ; Yashuang Yan ; Zhongxin Gu ; Zhen Chen ; Ping Zheng

Author_Institution

Sch. of Autom., Beijing Inst. of Technol., Beijing, China

fYear

2014

fDate

22-25 Oct. 2014

Firstpage

3345

Lastpage

3349

Abstract

A compound-structure permanent-magnet synchronous machine (CS-PMSM), which integrates two PMSMs, is a hybrid electric vehicle (HEV) power train concept. In order to meet the requirement of wide speed range of HEV, an axialaxial flux CS-PMSM with a new mechanical method of varying air gap to fulfill field-weakening control and to improve the operating speed range is investigated. The field-weakening principle of the axial-axial flux CS-PMSM with varying air gap is analyzed. The electromagnetic performances with air gaps varying are evaluated by 3D finite-element method (FEM). The principle of selecting original air gap is proposed with comprehensive consideration. The field weakening capability by varying air gap is evaluated based on the comparison with two other electric methods.

Keywords

air gaps; finite element analysis; hybrid electric vehicles; machine control; permanent magnet machines; synchronous machines; 3D finite-element method; CS-PMSM; FEM; HEV power train concept; HEV speed range; air gap analysis; axial-axial flux compound-structure PMSM; comparison field weakening capability; electromagnetic performance; field-weakening control principle; hybrid electric vehicle; mechanical method; permanent-magnet synchronous machine; Air gaps; Couplings; Hybrid electric vehicles; Magnetic flux; Rotors; Stators; Torque; Varying air gap; axial-axial flux; compound-structure permanent-magnet synchronous machine; field weakening;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2014 17th International Conference on

Conference_Location

Hangzhou

Type

conf

DOI

10.1109/ICEMS.2014.7014069

Filename

7014069