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

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.

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Study on Direct Torque Control Applied in the Electrical Propulsion Ship

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.354-355.1252 ◽

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.

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Hybrid Anti-Windup Fuzzy PI Controller Based Direct Torque Control of Three Phase Induction Motor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.573.155 ◽

2014 ◽

Vol 573 ◽

pp. 155-160

Author(s):

A. Pandian ◽

R. Dhanasekaran

Keyword(s):

Fuzzy Logic ◽

Induction Motor ◽

Fuzzy Logic Controller ◽

Control Method ◽

Fuzzy Controller ◽

Direct Torque Control ◽

Operating Conditions ◽

Torque Control ◽

Constant Speed ◽

Three Phase

This paper presents improved Fuzzy Logic Controller (FLC) of the Direct Torque Control (DTC) of Three-Phase Induction Motor (IM) for high performance and torque control industrial drive applications. The performance of the IM using PI Controllers and general fuzzy controllers are meager level under load disturbances and transient conditions. The FLC is extended to have a less computational burden which makes it suitable for real time implementation particularly at constant speed and torque disturbance operating conditions. Hybrid control has advantage of integrating a superiority of two or more control techniques for better control performances. A fuzzy controller offers better speed responses for startup and large speed errors. If the nature of the load torque is varied, the steady state speed error of DTC based IM drive with fuzzy logic controller becomes significant. To improve the performance of the system, a new control method, Hybrid fuzzy PI control is proposed. The effectiveness of proposed method is verified by simulation based on MATLAB. The proposed Hybrid fuzzy controller has adaptive control over load toque variation and can maintain constant speed.

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Direct Torque Control for Induction Motor Drive with Reduced Torque and Flux Ripples

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.f1018.0386s20 ◽

2020 ◽

Vol 8 (6S) ◽

pp. 101-106

Keyword(s):

Induction Motor ◽

Control Method ◽

Asynchronous Motor ◽

Direct Torque Control ◽

Torque Control ◽

Control Algorithms ◽

Induction Motor Drive ◽

Ac Motor ◽

Three Phase ◽

Hysteresis Controller

The most universally used electric motor is an induction motor fed with three phase supply and eighty percent of mechanical power utilized by industries is given by three phase asynchronous ac motor. Direct torque control method is one such technique for controlling flux and torque of an asynchronous motor fed with PWM VSI. Without any complex control algorithms, it provides easy commands for the control of induction motor flux as well as torque. We are demonstrating the principle of DTC of an asynchromous motor using three level hysteresis controller in this paper. Philosophy of DTC with aforementioned control method has been simulated using MATLAB/Simulink.

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Modeling of Three Phase Induction Motor with Dtc Drive Fault Analysis using Fuzzy Logic

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.f9824.059120 ◽

2020 ◽

Vol 9 (1) ◽

pp. 1196-1202 ◽

Cited By ~ 1

Keyword(s):

Induction Motor ◽

Monitoring System ◽

Control Method ◽

Direct Torque Control ◽

Fault Analysis ◽

Torque Control ◽

Motor Drive ◽

Heavy Load ◽

Three Phase ◽

Torque Ripples

Three phase induction motor drives are the most widely used drives in heavy load industries Because of its wide usage in industry, a small fault occurring in the motor drive may cause huge damage and results in failure of heavy machinaries.Inorder to avoid these failures, all the possible faults that may occur in induction motors are analysed. Based on the analysis performed, the parameters that may cause faults in the drive system are monitored. Even a minute change in the parameters are monitored using an intelligent control method named Fuzzy based monitoring system. In this monitoring system, induction motor drive is adopted with a direct torque control method to avoid the usual torque ripples present in the system. Thisintelligent fault monitoring system is used to take corrective measures within a specified time when the drive is implemented in an electric vehicle applications.

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The Influence of Moment of Inertia to Induction Motor Rotation in Sensorless Direct Torque Control and Duty Ratio

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.313-314.55 ◽

2013 ◽

Vol 313-314 ◽

pp. 55-60

Author(s):

Ridwan Gunawan ◽

Muhammad Luniara Siregar ◽

Feri Yusivar

Keyword(s):

Vector Control ◽

Induction Motor ◽

Control Method ◽

Direct Torque Control ◽

Moment Of Inertia ◽

Torque Control ◽

Duty Ratio ◽

Motor Power ◽

Three Phase ◽

Torque Ripples

The vector control has become the first alternative in control of three phase induction motor. One of the vector control method which is commonly used is the direct torque control (DTC) method. However, this system has drawback due to the existence of torque ripples. The addition of the duty ratio control base on fuzzy logic can give better performance compared to conventional DTC. By doing an examination on DTC and duty ratio using small, medium and big capacities of three phase induction motors can be shown the influence from moment of inertia to rotor rotation. This paper uses MATLAB SIMULINK for the simulation study with three types of motor power, for example 1, 10 and 50 hp. It is shown that using the same parameters, a motor with a larger moment inertia gives a better performance in comparison to a motor with smaller moment of inertia.

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