Title :
Research on electromagnetic performance of a novel radial magnetic-field-modulated brushless double-rotor machine
Author :
Zheng, Ping ; Bai, Jingang ; Tong, Chengde ; Lin, Jia ; Wang, Haipeng
Author_Institution :
Sch. of Electr. Eng. & Autom., Harbin Inst. of Technol., Harbin, China
Abstract :
A novel radial magnetic-field-modulated brushless double-rotor machine (MFM-BDRM), which is the key part of compound-structure permanent-magnet synchronous motor (CS-PMSM), is proposed in this paper. The speed and torque relations of the first-stator magnetic field, the first PM rotor and the modulating ring rotor are investigated by analytical method. The harmonic components of magnetic field in the inner and outer air gap are analyzed by finite-element method (FEM), when the PM magnetic field and armature field work independently. Furthermore, electromagnetic performances of two typical schemes are analyzed, which shows that torque ripples are the major problem of the radial MFM-BDRM. Some methods are proposed to reduce the torque ripples and validated by FEM.
Keywords :
brushless machines; finite element analysis; harmonics suppression; hybrid electric vehicles; machine insulation; magnetic fields; permanent magnet motors; rotors; stators; synchronous motors; FEM; air gap; armature field; brushless double rotor machine; compound structure; electromagnetic performance; finite element method; harmonic components; modulating ring rotor; permanent magnet synchronous motor; radial magnetic field modulation; stator; torque ripples; Electromagnetics; Magnetic fields; Magnetic flux; Rotors; Stator windings; Torque;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073503
