Permanent-magnet synchronous machines fed from current-regulated converters feature nearly ideal performance at low-to-moderate speeds. However, as rotor speed increases the back emf rises which results in loss of current regulation and decreased torque. In buried-magnet machine drives, flux weakening is often used to extend the speed range. This paper sets forth a flux-weakening control specifically designed for surface-mounted permanent-magnet machines which is simple and does not require knowledge of the machine or system parameters. The proposed method is demonstrated both experimentally and through the use of computer simulation
K. Corzine et al., "A Flux-weakening Strategy for Current-Regulated Surface-mounted Permanent-magnet Machine Drives," IEEE Transactions on Energy Conversion, Institute of Electrical and Electronics Engineers (IEEE), Jan 1995.
The definitive version is available at http://dx.doi.org/10.1109/60.464865
Electrical and Computer Engineering
Keywords and Phrases
PWM Power Convertors; Back Emf; Computer Simulation; Current-Regulated Converters; Current-Regulation; D-Axis Control; Digital Simulation; Electric Current Control; Electric Machine Analysis Computing; Flux-Weakening Strategy; Machine Control; Magnetic Flux; Magnetic Variables Control; Permanent Magnet Motors; Q-Axis Control; Rotor Speed; Simulation; Surface-Mounted Permanent-Magnet Machine Drives; Synchronous Current Regulator; Synchronous Motor Drives
International Standard Serial Number (ISSN)
Article - Journal
© 1995 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.