Evaluation of methods of speed estimation of asynchronous motor based on direct torque control (DTC)

SPEEDAM 2010 ◽  
2010 ◽  
Author(s):  
G. Adamidis ◽  
M. Leibadaras
Keyword(s):  
Asynchronous Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
Speed Estimation ◽  
Evaluation Of Methods

Speed Estimation Method for Sensor Less Control of AC Motor Drives Based on Stator Field Orientation

2011 ◽  
Vol 130-134 ◽  
pp. 1361-1364
Author(s):  
Shou Qiang Chen ◽  
Fan Li ◽  
Yu Long
Keyword(s):  
Direct Torque Control ◽  
Estimation Method ◽  
Orientation Angle ◽  
Torque Control ◽  
Speed Estimation ◽  
Field Orientation ◽  
Orientation Control ◽  
Ac Motor ◽  
Field Orientation Control ◽  
Estimation Scheme

Based on stator-field-orientation control combining with both direct torque control (DTC) and rotor-field-orientation control a speed estimation scheme is presented in this paper. Two key problems are discussed in detail. First is to use phase operation to decide stator-field-orientation angle θs and then the discrete-tracking-differential (DTD) technique is employed to high quality stator current. The experiments show that accurate speed estimation can be obtained by the method.

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 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.

scholarly journals Performance Improvement of Matrix Converter Direct Torque Control System

Energies ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 3247
Author(s):  
Bowei Zou ◽  
Yougui Guo ◽  
Xi Xiao ◽  
Bowen Yang ◽  
Xiao Wang ◽  
...  
Keyword(s):  
Control Strategy ◽  
Control Method ◽  
Asynchronous Motor ◽  
Direct Torque Control ◽  
Torque Ripple ◽  
Matrix Converter ◽  
Torque Control ◽  
Theoretical Simulation ◽  
Existing Problems ◽  
The Matrix

In asynchronous motor direct torque control systems, the power supply using the matrix converter can achieve the effect of direct torque control and also has the advantages of the matrix converter. Nonetheless, direct torque control still has drawbacks in terms of pulsation. In this paper, the characteristics of direct torque control method and its existing problems are analyzed in depth. In view of the shortcomings of torque ripple, an improved scheme of torque tracking control is proposed based on conventional control methods. On the basis of theoretical simulation, DSP and FPGA algorithms are designed respectively in C language and VHDL to implement the proposed control strategy. Finally, a highly integrated experimental platform of matrix converter has been developed to verify the proposed control strategy. The simulation and experimental results verify the correctness and effectiveness of the improved scheme.

Design of Induction Motor Direct Torque Control System

2011 ◽  
Vol 127 ◽  
pp. 134-138 ◽  
Author(s):  
You Gen Zheng ◽  
Jian Chen
Keyword(s):  
System Design ◽  
Software Design ◽  
Control Algorithm ◽  
Asynchronous Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
The Core ◽  
Voltage Vector ◽  
Space Voltage Vector ◽  
Design Software

According to the principle of the asynchronous motor direct torque control, based on the concept of space voltage vector, the paper correctly choices space vector, achieves a direct torque control algorithm. TMS320LF2407A chip as the core, conducted the system hardware design, software design, and conducted the actual commissioning of the system, obtained valuable results. In the system design and commissioning, at the same time the system simulation is carried out .The simulation promotes system design, in the actual commissioning, the simulation has played a guiding role.

The Design and Simulation of AC Asynchronous Motor Direct Torque Control System

2015 ◽  
Vol 713-715 ◽  
pp. 814-819
Author(s):  
Li Ping Zhang ◽  
Xu Guang Xin ◽  
Wei Ya Wang ◽  
Hai Feng Wu
Keyword(s):  
Control System ◽  
Dynamic Performance ◽  
Asynchronous Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
Analysis Method ◽  
Flux Linkage ◽  
Control Precision ◽  
Stator Flux ◽  
The Stability

The direct torque control (DTC) system of the traditional asynchronous motor has many disadvantages, such as complex modeling and large amount of calculation, In order to improve the dynamic performance of the DTC system of the asynchronous motor, a direct torque control system is put forward. It uses space vector analysis method to calculate electromagnetic torque and stator flux linkage of asynchronous motor directly, follows the change of the stator flux linkage and torque, omits the complicated calculation, reduces the dependence on motor parameters. The simulation model of the DTC system of the asynchronous motor was established using SIMULINK software package. The feasibility of method is proved in theory, The results of simulation show that the modeling and simulation of the system has good static and dynamic performance, control precision of the system is higher, the stability is better.

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.

Sign in / Sign up

Export Citation Format

Share Document