scholarly journals A Bearingless Induction Motor Direct Torque Control and Suspension Force Control Based on Sliding Mode Variable Structure

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Zebin Yang ◽  
Lin Chen ◽  
Xiaodong Sun ◽  
Weiming Sun ◽  
Dan Zhang
Keyword(s):  
Induction Motor ◽  
Control Method ◽  
Sliding Mode ◽  
Direct Torque Control ◽  
Variable Structure ◽  
Torque Ripple ◽  
Torque Control ◽  
Mode Switching ◽  
Sliding Mode Variable Structure ◽  
Suspension Performance

Aiming at the problems of the large torque ripple and unstable suspension performance in traditional direct torque control (DTC) for a bearingless induction motor (BIM), a new method of DTC is proposed based on sliding mode variable structure (SMVS). The sliding mode switching surface of the torque and flux linkage controller are constructed by torque error and flux error, and the exponential reaching law is used to design the SMVS direct torque controller. On the basis of the radial suspension force mathematical model of the BIM, a radial suspension force closed-loop control method is proposed by utilizing the inverse system theory and SMVS. The simulation models of traditional DTC and the new DTC method based on SMVS of the BIM are set up in the MATLAB/Simulink toolbox. On this basis, the experiments are carried out. Simulation and experiment results showed that the stable suspension operation of the BIM can be achieved with small torque ripple and flux ripple. Besides, the dynamic response and suspension performance of the motor are improved by the proposed method.

A Modified Direct Torque Control Based Fuzzy Variable Structure of Permanent Magnet Synchronous Motor

2013 ◽  
Vol 313-314 ◽  
pp. 15-19
Author(s):  
Guo Lin Che ◽  
Hua Lai
Keyword(s):  
High Performance ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Fuzzy Variable ◽  
Direct Torque Control ◽  
Variable Structure ◽  
Torque Ripple ◽  
Torque Control ◽  
Torque Control Strategy ◽  
Sliding Mode Variable Structure

For getting the High-performance electric vehicle control which has good dynamic, static characteristics and robustness, a direct torque control strategy of fuzzy sliding mode variable structure was designed to IPM motor. The method changes torque ripple, speed overshoot, poor anti-disturbance ability of the conventional DTC, and weakened the serious chatting which existed in sliding mode variable structure control. The simulation results show the feasibility and effectiveness.

scholarly journals Latest Advances in DTC Control of Induction Motors

2020 ◽  
Vol 8 (6S) ◽  
pp. 120-123
Keyword(s):  
Induction Motor ◽  
Predictive Control ◽  
Induction Motors ◽  
Adaptive System ◽  
Sliding Mode ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Torque Control ◽  
Model Reference Adaptive System ◽  
Model Reference Adaptive

In these days, developments in the area of Induction Motor control is increasing significantly. Considerable advancements have been taken place in the area of Direct Torque Control (DTC), which is capable of providing quick dynamic response with respect to torque and flux. This paper presents a detailed survey on various latest techniques of DTC control of Induction Motor such as DTC-SVM with hysteresis band, DTCSVM with Model Predictive Control, DTC with sliding mode control, DTC with Model reference adaptive system (MRAS) et cetera. The simulation results are discussed for DTC-SVPWM topology and results obtained proves that this method has reduced torque ripple

scholarly journals Performance Analysis of DTC-SVM Sliding Mode Controllers-Based Parameters Estimator of Electric Motor Speed Drive

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Fatma Ben Salem ◽  
Nabil Derbel
Keyword(s):  
Induction Motor ◽  
Controller Design ◽  
Sliding Mode ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Mutual Inductance ◽  
Torque Control ◽  
Motor Speed ◽  
Rotor Resistance ◽  
Stator Resistance

This paper is concerned with a framework which unifies direct torque control space vector modulation (DTC-SVM) and variable structure control (VSC). The result is a hybrid VSC-DTC-SVM controller design which eliminates several major limitations of the two individual controls and retains merits of both controllers. It has been shown that obtained control laws are very sensitive to variations of the stator resistance, the rotor resistance, and the mutual inductance. This paper discusses the performances of adaptive controllers of VSC-DTC-SVM monitored induction motor drive in a wide speed range and even in the presence of parameters uncertainties and mismatching disturbances. Better estimations of the stator resistance, the rotor resistance, and the mutual inductance yield improvements of induction motor performances using VSC-DTC-SVM, thereby facilitating torque ripple minimization. Simulation results verified the performances of the proposed approach.

scholarly journals Predictive Control of Induction Motor Drive Using dSPACE Platform

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Pavel Karlovský ◽  
Jiří Lettl
Keyword(s):  
Induction Motor ◽  
Predictive Control ◽  
Control Method ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Motor Drives ◽  
Torque Control ◽  
Great Effort ◽  
Predictive Algorithms ◽  
Waveform Distortion

<span lang="EN-US">Recently, the induction motor drives have become very popular in the area of controlled drives. Nowadays, a great effort is put on increasing their efficiency. The most widely used control method is the direct torque control (DTC). However, this method suffers from the torque ripple and current waveform distortion. The modification using predictive algorithms is becoming a popular approach. This paper presents a predictive control on the dSPACE DS1103 system and compares the method with DTC.</span>

Sliding Mode Controller Based on Fuzzy Neural Network Optimization for FSPM

2012 ◽  
Vol 229-231 ◽  
pp. 2170-2173
Author(s):  
Zhi Feng Zhang ◽  
Bao Dong Bai ◽  
Guo Xin Zhao
Keyword(s):  
High Performance ◽  
Sliding Mode ◽  
Direct Torque Control ◽  
Variable Structure ◽  
Torque Ripple ◽  
Torque Control ◽  
Sliding Mode Controller ◽  
Control Gain ◽  
Fuzzy Neural ◽  
Low Torque

A sliding mode controller for flux-switching permanent magnet (FSPM) motor is investigated in this paper, in which direct torque control (DTC) concept, variable structure control are integrated to achieve high performance. Then, an FNN is investigated to optimize the control gain matrix of sliding mode controller. The theoretical analyses for the proposed FNN sliding-mode controller are described in detail. Simulation results show that the proposed FNN sliding-mode controller provides low torque ripple and the chattering phenomenon is much reduced.

A New Direct Torque Control Method of Induction Motor for Torque Ripple Reduction

2008 ◽  
Vol 32 (7) ◽  
pp. 1061-1067 ◽  
Author(s):  
Deok-Ki Kim ◽  
Jong-Su Kim ◽  
Sung-Hwan Kim ◽  
Hyun-Soo Kim ◽  
Won-Ouk Kim ◽  
...  
Keyword(s):  
Induction Motor ◽  
Control Method ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Torque Control ◽  
Torque Ripple Reduction ◽  
Ripple Reduction
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