Title :
A Novel HTS PM Vernier Motor for Direct-Drive Propulsion
Author :
Li, Jiangui ; Chau, K.T.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
fDate :
6/1/2011 12:00:00 AM
Abstract :
In this paper, a novel high-temperature superconductor (HTS) permanent magnet (PM) vernier motor is proposed for direct-drive propulsion, which can directly offer the low-speed high-torque capability and the high-speed rotating field design to eliminate the gearing mechanism and maximize the power density, respectively. The key is to newly introduce HTS bulks to flux-modulation poles that can effectively modulate between the high-speed rotating field of armature windings and the low-speed rotating field of the PM outer rotor. Also, the use of HTS bulks can greatly reduce the flux leakage and hence improve the torque density. Based on using the finite element method, the motor performances are analysed. Hence, the validity of the proposed motor is verified.
Keywords :
finite element analysis; high-temperature superconductors; magnetic flux; permanent magnet motors; torque motors; windings; HTS PM vernier motor; HTS bulk; PM outer rotor; armature windings; direct-drive propulsion; finite element method; flux leakage; flux-modulation pole; gearing mechanism; high-speed rotating field design; high-temperature superconductor; low-speed high-torque capability; low-speed rotating field; motor performance; permanent magnet vernier motor; power density; torque density; High temperature superconductors; Permanent magnet motors; Reluctance motors; Rotors; Stator windings; Torque; Direct-drive; finite element method; high-temperature superconductor; permanent magnet; vernier machine;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2085412
