A novel control system for induction motor based on stator current vector orientation model

The paper presents design and verification of Forced Dynamics Control of an actuator with linear permanent magnet synchronous motor. This control method is a relatively new one and offers an accurate realization of a dynamic speed response, which can be selected for given application by the user. In addition to this, the angle between stator current vector and moving part flux vector is maintained mutually perpendicular as it is under conventional vector control. To achieve prescribed speed response derived control law requires estimation of an external force, which is obtained from the set of observers. The first observer works in pseudo-sliding mode and observes speed of moving part while the second one has filtering effect for elimination of the previous one chattering. The overall control system is verified by simulations and experimentally. Preliminary experiments confirmed that the moving part speed response follows the prescribed one fairly closely.

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Stator Current Vector Orientation-Based Backstepping Predictive Control of Torque Ripple Minimization for PMSM with consideration of Electrical Loss

Mathematical Problems in Engineering ◽

10.1155/2020/7319329 ◽

2020 ◽

Vol 2020 ◽

pp. 1-17

Author(s):

Yang Yu ◽

Leyao Cong ◽

Xia Tian ◽

Renjie Xie ◽

Jianbin Lu

Keyword(s):

Control Method ◽

Torque Ripple ◽

Backstepping Control ◽

Prediction Algorithm ◽

Operating Efficiency ◽

Stator Current ◽

Current Vector ◽

Wide Range ◽

Vector Orientation ◽

Electrical Loss

Existing research studies on torque ripple suppression mostly ignore the electrical loss of PMSM. However, the electrical loss will not only decrease the operating efficiency but also adversely influence the suppression of torque ripple. This paper attempts to construct a unified framework to suppress torque ripple with consideration of electrical loss. Firstly, a dynamic mathematical model of PMSM under current vector orientation is established with a combination of electrical loss. The constraints that can achieve the control of both torque ripple and electrical loss for PMSM are derived. Then, on the basis of the backstepping control principle, a closed-loop I/f integrative control method under stator current vector orientation is proposed. Meanwhile, this paper also proposes a speed estimation algorithm of PMSM based on the least-squares method to realize wide-range speed identification and an online prediction algorithm for control parameters of backstepping control to enhance the stability of the motor in operation. Both simulations and experiments have been performed to verify the effectiveness of the proposed control method, and the results indicate that torque ripple is suppressed effectively, operating efficiency is significantly improved, and all variables are regulated to track their reference signals correctly and rapidly.

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Performance and Analysis of Indirect Torque Control-Based Three-Phase Induction Motor

ELKHA ◽

10.26418/elkha.v13i2.49181 ◽

2021 ◽

Vol 13 (2) ◽

pp. 122

Author(s):

Andri Pradipta ◽

Santi Triwijaya ◽

Mohamad Ridwan

Keyword(s):

Control System ◽

Induction Motor ◽

Induction Motors ◽

Control Method ◽

Torque Control ◽

Stator Current ◽

Speed Controller ◽

Three Phase ◽

20 Nm ◽

Speed Response

Induction motors are widely used in industrial processes, vehicles and automation. Three-phase induction motors can be used for traction systems on electric locomotives. In this case, the speed control system is an important thing that must be applied to the propulsion system. This study aimed to test the indirect torque control for a Three-phase induction motor. A proportional integral (PI) controller was applied for speed controller. The indirect torque control system was modeled and simulated using PSIM software. According to the result, the control method showed a good performance. The speed could be maintained even the speed reference was changing or a load was applied. The steady state error of the speed response was just 0.1% with rise time around 0.06 s. The stator current went up to 39.5 A in starting condition. The stator current reached 12 A rms when the load of 10 Nm was applied. Then, the current rose to 15.7 A rms when the load was increased to 40 Nm and the current came down to 12.8 A rms when the load was decreased to 20 Nm.

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An Antiovervoltage Control Scheme for Electrolytic Capacitorless IPMSM Drives Based on Stator Current Vector Orientation

IEEE Transactions on Industrial Electronics ◽

10.1109/tie.2019.2918497 ◽

2020 ◽

Vol 67 (5) ◽

pp. 3517-3527 ◽

Cited By ~ 1

Author(s):

Dawei Ding ◽

Gaolin Wang ◽

Nannan Zhao ◽

Guoqiang Zhang ◽

Dianguo Xu

Keyword(s):

Stator Current ◽

Current Vector ◽

Control Scheme ◽

Vector Orientation

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A Control Method for Asynchronous Motor Based on Stator Current Vector Orientation

2006 6th World Congress on Intelligent Control and Automation ◽

10.1109/wcica.2006.1713413 ◽

2006 ◽

Author(s):

Jiaquan Lin ◽

Yi Zang ◽

Jun Zhang ◽

Xu Wang ◽

Zongfu Liu

Keyword(s):

Control Method ◽

Asynchronous Motor ◽

Stator Current ◽

Current Vector ◽

Vector Orientation

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Research on Induction Motor Vector Control System Based on Internal Model Decoupling

MATEC Web of Conferences ◽

10.1051/matecconf/201823204029 ◽

2018 ◽

Vol 232 ◽

pp. 04029

Author(s):

Hu-cheng He ◽

Wen-ting Wang ◽

Qun Zhu ◽

Lei Shi

Keyword(s):

Control System ◽

Vector Control ◽

Induction Motor ◽

Internal Model ◽

Frequency Control ◽

Internal Model Control ◽

Field Orientation ◽

Stator Current ◽

Model Control ◽

Vector Control System

As a high-performance variable frequency control technology, vector control has been widely used in the field of AC speed regulation. However, the cross-coupling potential of the induction motor after the vector transformation still affects the system performance. Therefore, the method is studied in which stator current is decoupled to excitation component and torque component using internal model control, and the internal model decoupling stator current controller is designed based on rotor field orientation. The simulation model of induction motor vector control system based on internal model decoupling is constructed with Matlab/Simulink. The simulation result shows that the internal model controller is superior to the traditional PI controller in disturbance-rejection performance and robustness.

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