Common Mode Voltage Reduction in Three Phase Inverter using Pre-Calculated Harmonic Eliminated PWM Method
Suresh A1, Rashmi M. R2, Sibi Raj P. M3
1Evgeny Bardulin*, Department of Management and Economics, Saint-Petersburg University of State Fire Service of EMERCOM of Russia, Saint-Petersburg, Russia.
2Lyudmila Zubova, Department of Economics and Law, Saint-Petersburg University of State Fire Service of EMERCOM of Russia, Saint-Petersburg, Russia.
3Anna Yakovleva, Department of Management and Economics, Saint-Petersburg University of State Fire Service of EMERCOM of Russia, Saint-Petersburg, Russia.
4Olga Zinisha, Department of monetary circulation and credit, Kuban State Agrarian University, Krasnodar, Russia.
5Lyudmila Piterskaya, Department of monetary circulation and credit, Kuban State Agrarian University, Krasnodar, Russia.
Manuscript received on November 22, 2019. | Revised Manuscript received on December 15, 2019. | Manuscript published on December 30, 2019. | PP: 4090-4097 | Volume-9 Issue-2, December, 2019. | Retrieval Number: B4952129219/2019©BEIESP | DOI: 10.35940/ijeat.B4952.129219
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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: Common Mode Voltage (CMV) produced in Pulse Width Modulated (PWM) inverters causes premature failure of the motor bearings. Therefore CMV has to be reduced. Precalculated Harmonic Eliminated PWM (PHEPWM) scheme is proposed to reduce the CMV in three phase inverter. The accurate switching angles have to be calculated by solving nonlinear equations. The switching angles for the pre-calculated harmonic elimination technique are calculated by using NewtonRaphson algorithm. The proposed modulation scheme is evaluated and tested at various switching frequencies for different modulation index. With this PHEPWM it is possible to eliminate the lower order harmonics, 5th, 7th , 11th, 13th, 17th, 19th, and 23rd from the inverter output voltage for any desired value of the fundamental component in for any desired modulation index. The CMV in inverter using PHEPWM method is compared with CMV produced using classical Sinusoidal PWM (SPWM) method.
Keywords: Common Mode Voltage (CMV), Pulse Width Modulated (PWM), Pre-calculated Harmonic Eliminated PWM (PHEPWM).