Volume 18, Issue 1, September 2015, Pages 192–205
Nagulapati Kiran1, K. Lavanya2, K. Trinad Babu3, and M. Sudheer Kumar4
1 EEE Department, Anil Neerukonda Institute of Technology and Sciences, Sangivalasa, Visakhapatnam, Andhra Pradesh, India
2 EEE Department, Anil Neerukonda Institute of Technology and Sciences, Sangivalasa, Visakhapatnam, Andhra Pradesh, India
3 EEE Department, Anil Neerukonda Institute of Technology and Sciences, Sangivalasa, Visakhapatnam, Andhra Pradesh, India
4 EEE Department, Anil Neerukonda Institute of Technology and Sciences, Sangivalasa, Visakhapatnam, Andhra Pradesh, India
Original language: English
Copyright © 2015 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
A voltage source inverter is commonly used to supply a three-phase induction motor with variable frequency and variable voltage for variable speed applications. A suitable pulse width modulation technique is employed to obtain the required output voltage in the line side of the inverter. The different methods for PWM generation are broadly classified into Triangle comparison based PWM and Space Vector based PWM. Space Vector Pulse Width Modulation (SVPWM) method is an advanced, computation intensive PWM method and possibly the best among all the PWM techniques for variable frequency drive applications. The SVPWM is an alternative method for the determination of switching pulse width and their position. This method has been finding widespread application in recent years because of the easier digital realization and better dc bus utilization. 2-level inverter is the first model developed using this technique. In SVPWM methods, a revolving reference voltage vector is provided as voltage reference instead of three phase modulating waves. The magnitude and frequency of the fundamental component in the line side are controlled by the magnitude and frequency, respectively, of the reference vector. This paper describes comparison of 2-level SPWM and 2-level SVPWM inverter fed induction motor. This project also describes step by step procedure how to implement 2-level SVPWM technique for three phase inverter. All the methods are simulated and results are obtained using MATLAB/SIMULINK. Speed response and THD levels are compared. From the results it is concluded that the dynamic response is improved and THD level of input current to induction motor is reduced in case of SVPWM when compared to SPWM.
Author Keywords: Space Vector Pulse Width Modulation, Sinusoidal Pulse Width Modulation, Voltage Source Inverter, Induction Motor, Total Harmonic Distortion.
Nagulapati Kiran1, K. Lavanya2, K. Trinad Babu3, and M. Sudheer Kumar4
1 EEE Department, Anil Neerukonda Institute of Technology and Sciences, Sangivalasa, Visakhapatnam, Andhra Pradesh, India
2 EEE Department, Anil Neerukonda Institute of Technology and Sciences, Sangivalasa, Visakhapatnam, Andhra Pradesh, India
3 EEE Department, Anil Neerukonda Institute of Technology and Sciences, Sangivalasa, Visakhapatnam, Andhra Pradesh, India
4 EEE Department, Anil Neerukonda Institute of Technology and Sciences, Sangivalasa, Visakhapatnam, Andhra Pradesh, India
Original language: English
Copyright © 2015 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
A voltage source inverter is commonly used to supply a three-phase induction motor with variable frequency and variable voltage for variable speed applications. A suitable pulse width modulation technique is employed to obtain the required output voltage in the line side of the inverter. The different methods for PWM generation are broadly classified into Triangle comparison based PWM and Space Vector based PWM. Space Vector Pulse Width Modulation (SVPWM) method is an advanced, computation intensive PWM method and possibly the best among all the PWM techniques for variable frequency drive applications. The SVPWM is an alternative method for the determination of switching pulse width and their position. This method has been finding widespread application in recent years because of the easier digital realization and better dc bus utilization. 2-level inverter is the first model developed using this technique. In SVPWM methods, a revolving reference voltage vector is provided as voltage reference instead of three phase modulating waves. The magnitude and frequency of the fundamental component in the line side are controlled by the magnitude and frequency, respectively, of the reference vector. This paper describes comparison of 2-level SPWM and 2-level SVPWM inverter fed induction motor. This project also describes step by step procedure how to implement 2-level SVPWM technique for three phase inverter. All the methods are simulated and results are obtained using MATLAB/SIMULINK. Speed response and THD levels are compared. From the results it is concluded that the dynamic response is improved and THD level of input current to induction motor is reduced in case of SVPWM when compared to SPWM.
Author Keywords: Space Vector Pulse Width Modulation, Sinusoidal Pulse Width Modulation, Voltage Source Inverter, Induction Motor, Total Harmonic Distortion.
How to Cite this Article
Nagulapati Kiran, K. Lavanya, K. Trinad Babu, and M. Sudheer Kumar, “Comparative analysis of Two-level Sinusoidal PWM and Space Vector PWM Inverter fed Three-phase Induction Motor,” International Journal of Innovation and Scientific Research, vol. 18, no. 1, pp. 192–205, September 2015.
