Title: A comparative performance evaluation of the conducted emissions in hard switched SPWM and HPWM inverters

Authors: D. Anand, S. Jeevananthan, S. Paramasivam

Addresses: Department of Electrical and Electronics Engineering, Mahendra Institute of Technology, Namakkal 637 503, India. ' Department of Electrical and Electronics Engineering, Pondicherry Engineering College, Pondicherry 605 014, India. ' ESAB Engineering Services Limited, Chennai 600 058, India

Abstract: This paper presents simulation and experimental discussions on conducted electromagnetic interference (EMI) emissions for a single-phase full-bridge sinusoidal pulse width modulated (SPWM) and hybrid pulse width modulated (HPWM) inverters. The influences of input dc link voltage, modulation depth and carrier frequency on the conducted noise are studied through ICAP simulation software. HPWM method, which effectively reduces the switching losses, exhibits reduced noise level. Simulated results are compared and validated with the real-time measurements on a high frequency inverter which is constructed for 100 kHz and tested at SAMEER Lab, Chennai, India. Simulation and experimental results are included to highlight the claim that HPWM has reduced noise level.

Keywords: conducted EMI; hybrid PWM; pulse width modulation; HPWM; PWM inverters; ICAP; power electronics; performance evaluation; simulation; electromagnetic interference; EMI emissions; sinusoidal PWM.

DOI: 10.1504/IJPELEC.2010.034181

International Journal of Power Electronics, 2010 Vol.2 No.3, pp.267 - 285

Accepted: 06 May 2009
Published online: 17 Jul 2010 *

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