The design of Interior Permanent Magnet brushless motor control system based on finite element method

The rotor of IPM (Interior Permanent Magnet) brushless motor is characterized with a high-strength structure so that the magnet is protected from centrifugal separation when running at a high speed; also, as designed a non-concentrically circular rotor to increase the motor torque output, there is a...

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Bibliographic Details
Main Authors: Changjiang Fu, Zhenliang Li, Mingxing Zhang
Format: Conference Proceeding
Language:English
Subjects:
Brushless motors
Cogging torque
Control systems
Finite element method
Finite element methods
Forging
Interior permanent magnet brushless motor
Magnetic analysis
Magnetic separation
Permanent magnet motors
Reluctance motors
Rotors
Salient pole effect
Torque
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Description
Summary:The rotor of IPM (Interior Permanent Magnet) brushless motor is characterized with a high-strength structure so that the magnet is protected from centrifugal separation when running at a high speed; also, as designed a non-concentrically circular rotor to increase the motor torque output, there is a reluctance torque produced by the salient poles effect in addition to the electromagnetic torque generated by the interactive reaction between the magnet and the coil; however, such a consequence will lead to an increase of the cogging torque. Thus, this research explored the salient-pole interior permanent magnet by going through the modifications of appearance dimensions of motor rotor, application of equivalent magnetic-circuit analysis and finite element method to analyze the cogging torque in a bid to make the objective toward the cogging torque reduction in interior permanent magnet brushless motor achievable.
ISSN:1948-3414
1948-3422
DOI:10.1109/CAR.2010.5456646