Design of a novel electromagnetic planetary gear used for hybrid electric vehicles

Author

Jingang Bai ; Yong Liu ; Chengde Tong ; Luming Cheng ; Zhanxi Lin

Author_Institution

Dept. of Electr. Eng., Harbin Inst. of Technol., Harbin, China

fYear

2014

fDate

22-25 Oct. 2014

Firstpage

3098

Lastpage

3103

Abstract

A new electromagnetic planetary gear (EPG), which is the key part of compound-structure permanent-magnet synchronous machine (CS-PMSM) for hybrid electric vehicles (HEVs), is designed in this paper. To obtain the optimal electromagnetic performance of the EPG, the distribution law of permanent-magnet (PM) magnetic field and armature field are investigated, respectively. Furthermore, the influence of some key parameters, like span and thickness of magnetic block, and PM pole-arc coefficient on the PM magnetic field and armature field are investigated. On that basis, the electromagnetic performances of no-load and load working conditions are analyzed. The influence of magnetic blocks and PMs on fundamental back EMF, voltage distortion rate, electromagnetic torque and torque ripple are further investigated. Finally, a optimal scheme of EPG with a high torque and a low torque ripple is designed.

Keywords

electric potential; electromagnetic devices; gears; hybrid electric vehicles; permanent magnet machines; synchronous machines; CS-PMSM; EPG; HEV; armature field; back EMF; compound-structure permanent-magnet synchronous machine; electromagnetic planetary gear; electromagnetic torque ripple; hybrid electric vehicle; load working condition; magnetic field; no-load working condition; pole-arc coefficient; voltage distortion rate; Electromagnetics; Harmonic analysis; Magnetic fields; Magnetic flux; Rate distortion theory; Rotors; Torque;

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.2014.7014027

Filename

7014027