Hybrid PWM Algorithm Based Vector Controlled Induction Motor Drive to Achieve Superior Waveform Quality
K. Satyanarayana1, J. Amarnath2, A. Kailasa Rao3
1Prof. K. Satyanarayana, Professor and H.O.D. of E.E.E Department, Pragati Engineering College, Surampalem, Andhra Pradesh, India.
2Dr.J.Amarnath, Professor of E.E.E Department, J.N.T. University, Hyderabad, Andhra Pradesh, India.
3Dr.A. Kailasa Rao, Professor of E.E.E Department and Director of Pragati Engineering College, Surampalem, Andhra Pradesh, India.
Manuscript received on November 02, 2011. | Revised Manuscript received on November 23, 2011. | Manuscript published on Decembe 30, 2011. | PP: 56-63 | Volume-1 Issue-2, December 2011. | Retrieval Number: B0133111211 /2011©BEIESP
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© The Authors. 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: This paper presents a Hybrid PWM Algorithm Based Vector Controlled Induction Motor Drive to Achieve Superior Waveform Quality. The proposed algorithm uses six basic bus-clamping PWM (BBCPWM) sequences along with the conventional SVPWM (CSVPWM) sequence and these switching sequences have been developed by using the concept of imaginary switching times without using the angle and sector information. The proposed Hybrid PWM (HPWM) algorithm selects a suitable PWM sequence which results in lowest ms current ripple over a given sampling time interval. To validate the proposed HPWM algorithm, numerical simulation studies have been carried out and the results have been presented and compared.
Keywords: CSVPWM, BBCPWM, HPWM, Induction motor, vector control.