scholarly journals DC-Link Current Control with Inverter Nonlinearity Compensation for Permanent Magnet Synchronous Motor Drives

Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 546
Author(s):  
Kan Wang ◽  
Zhong Wu ◽  
Zhongyi Chu
Keyword(s):  
Permanent Magnet ◽  
Phase Control ◽  
Current Control ◽  
Torque Control ◽  
System Structure ◽  
Current Sensor ◽  
Reconstruction Technique ◽  
Amplitude Control ◽  
Phase Current ◽  
Three Phase

For permanent magnet synchronous motors (PMSMs) supplied with a voltage source inverter, current control strategies are commonly implemented under the synchronously rotating reference frame. In order to simplify the system structure, three-phase currents can be measured with a single DC-link current sensor using the phase current reconstruction technique. However, it still needs to follow the conventional AC current control approach. In this paper, a DC-link current control method for PMSMs is proposed to further simplify the control system. The problem of phase current control was separated into the problems of amplitude control and phase control. Then, amplitude control was achieved using a closed-loop controller directly tracking the DC-link current; while phase control was achieved by AC-side pulse width modulation (PWM) following the phase angle of back electromotive force. The compensation for nonlinear distortion of the inverter was taken into account during the control process. Finally, the proposed method realized three-phase current control with a single current sensor and controller, and achieved the purpose of electromagnetic torque control. Experimental results demonstrate the effectiveness of the proposed method.

A Three-Phase Current Reconstruction Technique Using Single DC Current Sensor Based on TSPWM

2014 ◽  
Vol 29 (3) ◽  
pp. 1542-1550 ◽  
Author(s):  
Haifeng Lu ◽  
Xiaomeng Cheng ◽  
Wenlong Qu ◽  
Shuang Sheng ◽  
Yituo Li ◽  
...  
Keyword(s):  
Current Sensor ◽  
Reconstruction Technique ◽  
Phase Current ◽  
Three Phase ◽  
Dc Current ◽  
Current Reconstruction

Model predictive torque control of a six-phase PM synchronous hub motor with auxiliary voltage vectors

2020 ◽  
pp. 1-17
Author(s):  
Hao Xu ◽  
Long Chen ◽  
Xiaodong Sun
Keyword(s):  
Permanent Magnet ◽  
Electric Vehicles ◽  
Control Method ◽  
Research Direction ◽  
Synchronous Motor ◽  
Torque Control ◽  
Experimental Results ◽  
Vector Model ◽  
Dynamic State ◽  
Three Phase

Permanent magnet synchronous hub motors (PMSHMs) have been gradually introduced into the applications of electric vehicles. In order to output more torque, many researchers turned their research direction to six-phase motors. Because it is composed of two sets of three-phase windings, there will be interference between the windings, affecting the performance of the motor. In order to improve the steady and dynamic-state performance of permanent magnet six phase synchronous motor, a predictive torque control method based on multi vector model is proposed in this paper. Finally, experimental results show the effectiveness of this method.

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