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Expansion of operating limits for permanent magnet motor by current vector control considering inverter capacity
By: Takeda, Y.; Morimoto, S.; Taniguchi, K.; Hirasa, T.;
1990 / IEEE
Description
This item was taken from the IEEE Periodical ' Expansion of operating limits for permanent magnet motor by current vector control considering inverter capacity ' 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.<
Related Topics
Digital Simulation
Electric Current Control
Electric Machine Analysis Computing
Invertors
Machine Control
Machine Theory
Coercivity
Machine Control
Machine Theory
Operating Limits
Current Vector Control
Inverter Capacity
Output Torque
Computer Simulation
Armature Current
Rotor Speed
Demagnetization
Rare-earth Permanent Magnet
Permanent Magnet Motors
Demagnetization
Machine Vector Control
Inverters
Torque Control
Voltage Control
Computer Simulation
Rotors
Permanent Magnets
Coercive Force
Control System Analysis Computing
Permanent Magnet Motors
Signal Processing And Analysis
Power, Energy And Industry Applications
Engineering
Permanent Magnet Motor