Research of Direct Torque Control of Asynchronous Motor

2014 ◽  
Vol 986-987 ◽  
pp. 1112-1116
Author(s):  
Chun Bo Gu ◽  
Zhong Chu Wang ◽  
Lin Liu
Keyword(s):  
Asynchronous Motor ◽  
Direct Torque Control ◽  
Good Control ◽  
Torque Control ◽  
Regulation System ◽  
Control Effect ◽  
Dynamic Regulation ◽  
Speed Regulation ◽  
Main Component ◽  
Control Principle

Direct torque control (DTC) as a new type of motor control strategy, make the control system has good dynamic regulation performance. In this paper, we use the theory of direct torque control to research the speed regulation system of asynchronous motor direct torque control principle and its main component. Use Matlab/Simulink library to build the simulation model of induction motor DTC complete simulation and results show that the direct torque control run time has good control effect in asynchronous motor.

Study on Direct Torque Control Applied in the Electrical Propulsion Ship

2011 ◽  
Vol 354-355 ◽  
pp. 1252-1256
Author(s):  
You Tao Zhao ◽  
Yan Cheng Liu ◽  
Jun Jie Ren
Keyword(s):  
Electric Propulsion ◽  
Control Method ◽  
Direct Torque Control ◽  
Torque Control ◽  
Regulation System ◽  
Propulsion Systems ◽  
Speed Regulation ◽  
Imple Mentation ◽  
Electrical Propulsion ◽  
Simulation Results

With the development of AC (alternating current )technique, larger power PMSM ( permanent m- agnet synchronous motor ) has been applied in the marine electric propulsion systems. In this paper the imple- mentation of the DTC (direct torque control) systems for a variable-speed 4088kW PMSM in ship electric propulsion systems has been studied. A novel control method using SVPWM (space vector pulse width mo- dulation) was proposed and a SVPWM module was designed. Then a DTC – SVPWM simulation model of PMSM with the load of propeller was found. The simulation results shows that the variable frequency speed regulation system have good response performance in the process of the motor start or speedup and through comparing the simulation results with the experiment data of the PMSM, the validity of the model is verified.

Analysis of 3 Phase Induction Motor Speed Control with Direct Torque Control (DTC) Method Based on PID Control

2020 ◽  
Vol 7 (2) ◽  
Author(s):  
Mokh. Suseno Aji Sari ◽  
Hadi Suyono ◽  
Abraham Lomi
Keyword(s):  
Induction Motor ◽  
Pid Control ◽  
Control Method ◽  
Direct Torque Control ◽  
Torque Control ◽  
Regulation System ◽  
Motor Speed ◽  
Speed Regulation ◽  
Stable Conditions ◽  
Three Phase

This research was conducted to regulate the three phase induction motor speed regulation system. Changes in load on the motor affect the motor speed response so it does not match the set point speed. This study uses the Direct Torque Control (DTC) method in regulating the speed of an induction motor. The DTC method is a vector control method that is directly assigned to the inverter. DTC method in controlling speed based on Proportional Integral Differential (PID) control. Determination of PID tunning using two methods, namely, ziegler-nichols and cohen-coon method. The ziegler-nichols method have overshoot speeds starting at 0.8% of the setpoint, whereas using the cohen coon method there is no overshoot and the speed at stable conditions matches the setpoint.

scholarly journals Model-Free Adaptive Direct Torque Control for the Speed Regulation of Asynchronous Motors

Processes ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 333
Author(s):  
Ziwei Zhang ◽  
Shangtai Jin ◽  
Genfeng Liu ◽  
Zhongsheng Hou ◽  
Jianmin Zheng
Keyword(s):  
Numerical Simulations ◽  
Asynchronous Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
Output Data ◽  
Model Free ◽  
Speed Regulation ◽  
Asynchronous Motors

In this paper, a model-free adaptive direct torque control (MFADTC) method for the speed regulation of asynchronous motors is proposed to solve the problems of modeling difficulties and poor anti-disturbance ability of the asynchronous motor. The designed model-free adaptive direct torque control (MFADTC) method depends merely on the input and the output data of the asynchronous motor. Numerical simulations are provided to show that this method has significantly improved the system’s anti-disturbance ability.

Study of the Electricity-Draw Control System in Electrical Engineering Based on Neural Network DTC

2013 ◽  
Vol 676 ◽  
pp. 209-212
Author(s):  
Lu Huan Shi ◽  
Yao Hui Li
Keyword(s):  
Neural Network ◽  
Control System ◽  
Control Strategy ◽  
Dynamic Performance ◽  
Asynchronous Motor ◽  
Sudden Change ◽  
Direct Torque Control ◽  
Torque Control ◽  
Electric Locomotive ◽  
Low Velocity

In the electricity draws control system, the change of Low-velocity area of Rs will bring about a series of problem, especially the stator current and flux, will cause the distortion of the speed pulse vibration. The test discussed control scheme and optimization designs of asynchronous draw motors from exchange transmission electric locomotive operation characteristic demand. It adopts control strategy of neural network direct torque control (DTC) to control electricity draw the locomotive, to analyze the reacting of starting and sudden change of load, verifying this method may effectively improve the dynamic performance of the asynchronous motor, got up the very good inhibitory action to the low speed area torque pulsation. Thus the simulation results have proven the neural network DTC control strategy feasibility.

Simulation and Study of SPWM Variable-Frequency Drives of Asynchronous Motors Based on Aerostatic Guide Way

2014 ◽  
Vol 989-994 ◽  
pp. 2807-2810
Author(s):  
Wei Long ◽  
Yan Liu ◽  
Xiao Long Zhang ◽  
Ting You Wang
Keyword(s):  
Coordinate Transformation ◽  
Asynchronous Motor ◽  
Dc Motor ◽  
Regulation System ◽  
Variable Frequency ◽  
Speed Regulation ◽  
Asynchronous Motors ◽  
Variable Frequency Drives ◽  
Inverter Circuit

The asynchronous motor is converted to a model similar to DC motor to control through coordinate transformation, and adopt SPWM inverter circuit, the motor runs with load implements ideal speed and steady operation, providing appropriate speed for aerostatic guide way. Realize simulation of asynchronous motor variable frequency speed regulation system by simulink.

Simulation Research of Asynchronous Motor Direct Torque Control System Based on MATLAB

2014 ◽  
Vol 577 ◽  
pp. 364-367
Author(s):  
Guo Hong Li ◽  
Yi Li
Keyword(s):  
Vector Control ◽  
Asynchronous Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
Simulation Research ◽  
Startup Time ◽  
Vector Theory ◽  
The Difference ◽  
In Virtue Of ◽  
Excellent Stability

Compared with vector control, direct torque control (DTC) spurned coupling idea and canceled circumgyration coordinates transform. By detecting motor’s stator voltage and current, along with calculating motor’s flux and torque in virtue of the instantaneous space vector theory, DTC controlled flux and torque directly according to the difference between the detecting value and design value. DTC also reduced calculation amount and overcomed the flaw that the system was disturbed by motor’s parameters easily, which were the problems in the vector control. On the basis approach mentioned above, this paper realized the system simulation using DTC. Simulation shows that asynchronous motor control has favorable ability of speed adjusting, short startup time, excellent stability.

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