scholarly journals An Improved UDE-Based Flux-Weakening Control Strategy for IPMSM

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4077 ◽  
Author(s):  
Gu ◽  
Li ◽  
Li ◽  
Zhang ◽  
Wang
Keyword(s):  
Control Strategy ◽  
Control Method ◽  
Parameter Tuning ◽  
Lookup Table ◽  
Permanent Magnet Synchronous Motors ◽  
Tuning Method ◽  
Constant Torque ◽  
Interior Permanent Magnet ◽  
Flux Weakening Control ◽  
Flux Weakening

Interior permanent magnet synchronous motors (IPMSMs) are usually used in electric vehicle drives and in other applications. In order to enlarge the speed range of IPMSMs, the flux-weakening control method is adopted. The traditional flux-weakening control strategy degrades the control performance because of parameter mismatches caused by variation of motor parameters. An improved uncertainty and disturbance estimator (UDE)-based flux-weakening control strategy is proposed for IPMSM drives in this paper. The parameter tuning method in the UDE-based control is improved. In addition, a flux-weakening adjusting factor is put forward to reduce the torque fluctuation when the operation point switches between the constant torque region and the flux-weakening region. This factor can be adjusted online by a lookup table. Finally, the validity of proposed method is verified by the simulation and experimental results. The results show that the proposed control strategy can effectively enhance the robustness of the system in the flux-weakening region, and make the system switch more smoothly between the constant torque region and the flux-weakening region.

Dual Permanent Magnet Synchronous Motors Fed by a Five-Leg Inverter System Using Maximun Torque per Ampere

2014 ◽  
Vol 703 ◽  
pp. 352-355
Author(s):  
Bing Bing Chan ◽  
Yu Xin Sun ◽  
Yi Du ◽  
Huang Qiu Zhu ◽  
Xian Xing Liu
Keyword(s):  
Permanent Magnet ◽  
Control Strategy ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Current Control ◽  
Mathematics Model ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Interior Permanent Magnet ◽  
Maximum Torque Per Ampere

In this paper, a maximum torque per ampere (MTPA) control strategy based on space vector pulse width modulation (SVPWM) is adopted in a dual three-phase interior permanent magnet synchronous motors (PMSMs) system with a five-leg inverter. The simulation model is established in Matlab/Simulink based on the mathematics model of PMSM and the current control method. And the simulation results of the proposed current control strategy are compared with those of id=0 method in order to verify the performances and characteristics of MTPA control stategy.

Research on Adaptive PID Control for Load Simulator with Varying Load

2014 ◽  
Vol 568-570 ◽  
pp. 1031-1035
Author(s):  
Ju Tian ◽  
Yao Chen
Keyword(s):  
Pid Control ◽  
Simple Structure ◽  
Control Method ◽  
Parameter Tuning ◽  
Hardware In The Loop ◽  
Tuning Method ◽  
Hydraulic Load ◽  
Variation Characteristics ◽  
Load Simulator ◽  
Adaptive Pid Control

The electro-hydraulic load simulator is an important equipment for aircraft hardware-in-the-loop simulation. An adaptive PID control method for compensating extraneous torque with simple structure and easy to implement is proposed according to the variation characteristics of load gradient in the load simulator. The control parameter tuning method is also given.

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