Reduction of Both Harmonic Current and Torque Ripple for Dual Three-Phase Permanent-Magnet Synchronous Machine Using Modified Switching-Table-Based Direct Torque Control

2015 ◽  
Vol 62 (11) ◽  
pp. 6671-6683 ◽  
Author(s):  
Yuan Ren ◽  
Z. Q. Zhu
Keyword(s):  
Permanent Magnet ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Synchronous Machine ◽  
Torque Control ◽  
Permanent Magnet Synchronous Machine ◽  
Harmonic Current ◽  
Three Phase

Coupled Field and Circuit Model Analysis of Permanent Magnet Synchronous Machine for Direct Torque Control Optimization

2010 ◽  
Vol 670 ◽  
pp. 265-272 ◽  
Author(s):  
Evangelos M. Tsampouris ◽  
Charalampos Patsios ◽  
Antonios Chaniotis ◽  
Antonios G. Kladas ◽  
John Prousalidis
Keyword(s):  
Permanent Magnet ◽  
Evaluation Model ◽  
Direct Torque Control ◽  
Element Model ◽  
Torque Ripple ◽  
Synchronous Machine ◽  
Circuit Model ◽  
Torque Control ◽  
Permanent Magnet Synchronous Machine ◽  
Coupled Field

The pulsating torque of a permanent magnet motor has detrimental effects on the motor operation, resulting in speed perturbation, positioning error, vibration, and noise. Several efforts of countering the torque ripple focus on magnet pole shape optimization procedures while other efforts apply sophisticated modifications of control algorithms. In this paper a coupled field and circuit model of a permanent magnet synchronous machine (PMSM) is introduced in order to reduce the effects of pulsating torque. The model comprises of a 2D finite element model for detailed computation of the machine field distribution coupled with an external equivalent circuit for macroscopic parameter evaluation. Model results are then integrated in a direct torque control algorithm for the minimization of torque ripple in a PM machine prototype.

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