Expansion of operating limits for permanent magnet motor by current vector control considering inverter capacity
- 1 January 1990
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Industry Applications
- Vol. 26 (5) , 866-871
- https://doi.org/10.1109/28.60058
Abstract
The current vector control method of PM (permanent magnet) motors is examined to expand the operating limits associated with inverter capacity. This control method is optimum in the sense of deriving maximum output torque within the voltage and current constraints. The effects of motor parameters are examined by computer simulation. The operating limits are greatly expanded by controlling the d- and q-axis components of the armature current according to the rotor speed. The operating limits are examined considering the demagnetization of the permanent magnet. If the permanent magnet has a straight demagnetization curve, like a rare-earth permanent magnet, the PM motor can be safely operated until the demagnetizing coefficient becomes 1.0. If wide speed range or constant power operation is desirable, a permanent magnetic with a high coercivity and a linear demagnetization curve must be used for the PM motor.< >Keywords
This publication has 7 references indexed in Scilit:
- Current phase control methods for permanent magnet synchronous motors considering saliencyPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Power capability of salient pole permanent magnet synchronous motors in variable speed drive applicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- A high-performance inverter-fed drive system of an interior permanent magnet synchronous machineIEEE Transactions on Industry Applications, 1988
- Flux-Weakening Regime Operation of an Interior Permanent-Magnet Synchronous Motor DriveIEEE Transactions on Industry Applications, 1987
- Operating Limits of Inverter-Driven Permanent Magnet Motor DrivesIEEE Transactions on Industry Applications, 1987
- Interior Permanent-Magnet Synchronous Motors for Adjustable-Speed DrivesIEEE Transactions on Industry Applications, 1986
- Field Weakening in Buried Permanent Magnet AC Motor DrivesIEEE Transactions on Industry Applications, 1985