Optimization of Stator Core Shape to Minimize Harmonic Current in Surface Permanent Magnet Synchronous Motor Using Topology Optimization Algorithm

2021 ◽  
Author(s):  
Masanori Watahiki ◽  
Kan Akatsu
Keyword(s):  
Topology Optimization ◽  
Permanent Magnet ◽  
Optimization Algorithm ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Harmonic Current ◽  
Stator Core

scholarly journals A compare research on third harmonic current control for five-phase permanent magnet synchronous motor

2021 ◽  
Vol 39 (4) ◽  
pp. 865-875
Author(s):  
Tianxing Li ◽  
Ruiqing Ma ◽  
Hao Bai ◽  
Ping Fan ◽  
Yuchen Zhang
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Reference Value ◽  
Synchronous Motor ◽  
Electromagnetic Torque ◽  
Harmonic Current ◽  
Third Harmonic ◽  
The Third ◽  
Current Reference ◽  
Maximum Current

The injection of a third harmonic current can improve the electromagnetic torque output of the five-phase permanent magnet synchronous motor. In this paper, constant copper consumption and constant maximum current are used as constraints, and the influence of the ratio between the third harmonic current and the fundamental current on the electromagnetic torque under the two constraints is analyzed. The electromagnetic torque is the largest when the third harmonic current reference value is equal to the fundamental current reference value of ψf3/ψf times under the premise of the constant copper loss. On the premise that the maximum current is constant, the electromagnetic torque is the largest when the third harmonic current reference value is equal to the fundamental current reference value of kw/(6kw-kw3/3) times. On this basis, according to the vector amplitude, phase and action time, the changing trends of maximum voltage utilization rate with Vref3/Vref1 under three different kinds of methods are given. Finally, through the experimental platform, the control effects of the three kinds of SVPWM are compared under two constraint conditions.

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