Direct Torque Control of PWM Inverter-Fed AC Motors—A Survey

2004 ◽  
Vol 51 (4) ◽  
pp. 744-757 ◽  
Author(s):  
G.S. Buja ◽  
M.P. Kazmierkowski
Keyword(s):  
Direct Torque Control ◽  
Torque Control ◽  
Pwm Inverter ◽  
Ac Motors

Stator Inter-turn Fault Detection in Inverter Fed Induction Motor Drives

2017 ◽  
Vol 6 (2) ◽  
pp. 90
Author(s):  
Khadim Moin Siddiqui ◽  
Kuldeep Sahay ◽  
V.K. Giri
Keyword(s):  
Fault Detection ◽  
Simulation Model ◽  
Induction Motor ◽  
Dynamic Simulation ◽  
Direct Torque Control ◽  
Transient Behavior ◽  
Torque Control ◽  
Transient Condition ◽  
Pwm Inverter ◽  
Cage Induction Motor

The Squirrel Cage Induction motor(SCIM) with advanced power electronic inverters presents the greater advantages on cost and energy efficiency as compared with other industrial solutions for varying speed applications. In recent, the inverter fed induction motors are being popular in the industries. These inverter fed-motors are recently gathering great recognition for multi-megawatt industrial drive applications. In this present paper, a dynamic simulation model of PWM inverter fed SCIM with direct torque control jointly has been presented and analyzed in the recent MATLAB/Simulink environment. From the proposed simulation model, the transient behavior of SCIM has been analysed for healthy as well as for stator inter-turn fault condition. The dynamic simulation of induction motor is one of the key steps in the validation of design process of the electric motor and drive system. It is extremely needed for eliminating probable faults beforehand due to inadvertent design mistakes and changes during operation. The simulated model gives encouraging results with reduced harmonics [1]. By using the model, the successful detection of stator inter-turn fault of the SCIM is carried out in the transient condition. Therefore, early stator fault detection is possible and may avoid the motor to reach in the catastrophic conditions. Therefore, may save millions of dollars for industries.

Stator Inter-turn Fault Detection in Inverter Fed Induction Motor Drives

2017 ◽  
Vol 6 (2) ◽  
pp. 89
Author(s):  
Khadim Moin Siddiqui ◽  
Kuldeep Sahay ◽  
V. K. Giri
Keyword(s):  
Fault Detection ◽  
Simulation Model ◽  
Induction Motor ◽  
Dynamic Simulation ◽  
Direct Torque Control ◽  
Transient Behavior ◽  
Torque Control ◽  
Transient Condition ◽  
Pwm Inverter ◽  
Cage Induction Motor

The Squirrel Cage Induction Motor (SCIM) with advanced power electronic inverters presents the greater advantages on cost and energy efficiency as compared with other industrial solutions for varying speed applications. In recent, the inverter fed induction motors are being popular in the industries. These inverter fed-motors are recently gathering great recognition for multimegawatt industrial drive applications. In this present paper, a dynamic simulation model of PWM inverter fed SCIM with direct torque control jointly has been presented and analyzed in the recent MATLAB/Simulink environment. From the proposed simulation model, the transient behavior of SCIM has been analysed for healthy as well as for stator inter-turn fault condition. The dynamic simulation of induction motor is one of the key steps in the validation of design process of the electric motor and drive system. It is extremely needed for eliminating probable faults beforehand due to inadvertent design mistakes and changes during operation. The simulated model gives encouraging results with reduced harmonics [1]. By using the model, the successful detection of stator inter-turn fault of the SCIM is carried out in the transient condition. Therefore, early stator fault detection is possible and may avoid the motor to reach in the catastrophic conditions. Therefore, may save millions of dollars for industries.

A Constant Switching Frequency DTC for PMSM Using Low Switching Losses SVM–An Experimental Result

2017 ◽  
Vol 8 (2) ◽  
pp. 558
Author(s):  
K. Chikh ◽  
A. Saad ◽  
M. Khafallah ◽  
D. Yousfi ◽  
F.Z. Tahiri ◽  
...  
Keyword(s):  
Permanent Magnet Synchronous Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
Experimental Result ◽  
Switching Frequency ◽  
Pwm Inverter ◽  
Switching Losses ◽  
Stator Flux ◽  
Vector Modulation ◽  
Torque Ripples

A Constant Switching Frequency Direct Torque Control (CSF-DTC) with low switching losses Space Vector modulation (SVM) for Permanent Magnet Synchronous Motor (PMSM) drive is proposed in this work. The CSF-DTC combines Field Oriented Control (FOC) and basic DTC advantages. Indeed, the proposed control strategy improves the basic DTC performances, which features low flux and torque ripples as well as a fixed switching frequency. The improved DTC ensures also a fast and robust flux and torque responses by using Integral and Proportional (IP) controllers which guaranteed a good disturbance rejection.On the other hand, a symmetrical SVM technique with low switching losses in the PWM inverter is used in order to generate the desired stator voltage vector needed to control the stator flux and the motor torque. Simulation and experimental results are presentedin this paper.These results demonstrate well the performance of the basic and proposed DTC and they show the effectiveness of the constant switching frequency direct torque control.

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