Research Article | OPEN ACCESS
High Performance of Space Vector Modulation Direct Torque Control SVM-DTC Based on Amplitude Voltage and Stator Flux Angle
1Hassan Farhan Rashag, 1S.P. Koh, 1K.H. Chong, 1S.K. Tiong, 2Nadia M.L. Tan and 3Ahmed N. Abdalla
1Department of Electronics and Communication Engineering
2Department of Electrical Power Engineering, University Tenaga National, Selangor 43000, Malaysia
3Faculty of Electrical and Electronic Engineering, University Malaysia Pehang, Pekan 26600, Malaysia
Research Journal of Applied Sciences, Engineering and Technology 2013 15:3934-3940
Received: September 10, 2012 | Accepted: October 19, 2012 | Published: April 25, 2013
Abstract
Various aspects related to controlling induction motor are investigated. Direct torque control is an original high performance control strategy in the field of AC drive. In this proposed method, the control system is based on Space Vector Modulation (SVM), amplitude of voltage in direct- quadrature reference frame (d-q reference) and angle of stator flux. Amplitude of stator voltage is controlled by PI torque and PI flux controller. The stator flux angle is adjusted by rotor angular frequency and slip angular frequency. Then, the reference torque and the estimated torque is applied to the input of PI torque controller and the control quadrature axis voltage is determined. The control d-axis voltage is determined from the flux calculator. These q and d axis voltage are converted into amplitude voltage. By applying polar to Cartesian on amplitude voltage and stator flux angle, direct voltage and quadratures voltage are generated. The reference stator voltages in d-q are calculated based on forcing the stator voltage error to zero at next sampling period. By applying inverse park transformation on d-q voltages, the stator voltages in α and β frame are generated and apply to SVM. From the output of SVM, the motor control signal is generated and the speed of the induction motor regulated toward the rated speed. The simulation Results have demonstrated exceptional performance in steady and transient states and shows that decrease of torque and flux ripples is achieved in a complete speed range.
Keywords:
Amplitude voltage, Direct Torque Control (DTC), Space Vector Modulation (SVM), stator flux angle,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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