Speed Control of Induction Motor using Eleven Levels Multilevel Inverter
Karalapati Preethi1, G. Anil2, E. Vani3
1Karalapati Preethi, Department of Electrical and Electronics Engineering, CMR College of Engineering & Technology, Hyderabad, India
2G.Anil, Department of Electrical and Electronics Engineering, CMR College of Engineering & Technology, Hyderabad, India.
3E.Vani, Department of Electrical and Electronics Engineering, Sri Dattha Institute of Engineering and Science, Rangareddy (A.P.) India.
Manuscript received on April 05, 2013. | Revised Manuscript received on April 11, 2013. | Manuscript published on April 15, 2013. | PP: 15-20 | Volume-1 Issue-5, April 2013. | Retrieval Number: E0205041513/2013©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The main objective of this paper is to control the speed of an induction motor by using seven level diode clamped multilevel inverter and to compare the speed control of induction motor using seven level, nine level and eleven level multilevel inverters individually . To obtain high quality sinusoidal output voltage with reduced harmonics. The proposed Scheme for diode clamped multilevel inverter is multicarrier SPWM control. Stator voltage control method is used to control the speed of Induction Motor. As the motor torque is proportional to the square of the supply voltage, a reduction in supply voltage reduce the motor torque and therefore the speed of the drive. The proposed system is an effective replacement for the conventional method which has high switching losses, as a result a poor drive performance. The simulation result portrays the effective control in the motor speed and an enhanced drive performance through reduction in total harmonic distortion (THD).
Keywords: Diode clamped multilevel inverter; induction motor; THD.