Space Vector based Pulse Width Modulation Scheme for a Five – Level Inverter using Open – End Winding Induction Motor
Shiny G1, M.R.Baiju2
1Shiny G, Power Electronics Research Laboratory, Dept. of Electronics & Communication Engineering, College of Engineering Trivandrum, Kerala, India.
2M.R.Baiju, Power Electronics Research Laboratory, Dept. of Electronics & Communication Engineering, College of Engineering Trivandrum, Kerala, India
Manuscript received on May 28, 2014. | Revised Manuscript received on June 18, 2014. | Manuscript published on June 30, 2014. | PP: 119-127 | Volume-3, Issue-5, June 2014. | Retrieval Number: E3102063514/2013©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: A Space Vector based Pulse Width Modulation (SVPWM) scheme for a 5-level inverter is presented. Sector identification is carried out using an approach based on fractal concept. To represent the space vectors, 60° coordinate frame work is used. The use of 60° coordinate system eliminates fractal arithmetic compared to Cartesian coordinate system, and increases speed of computation. No look up tables are used to generate sectors and switching vectors. The scheme also works in over modulation region. Experimental results for a 5-level inverter using induction motor in open-end winding configuration are presented to validate the scheme.
Keywords: Space vector, Fractal, Inverter, Open-end winding.