Filter Configuration and PWM Method For Single Phase Inverters with Reduced Conducted EMI Noise

Hedayati, Mohammad H and John, Vinod (2014) Filter Configuration and PWM Method For Single Phase Inverters with Reduced Conducted EMI Noise. In: IEEE Transportation Electrification Conference and Expo (ITEC Asia-Pacific), AUG 31-SEP 03, 2014, Beijing, PEOPLES R CHINA.

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Abstract

Electromagnetic Interference (EMI) noise is one of the major issues during the design of the grid-tied power converters. Presence of high dv/dt in Common Mode (CM) voltage, excites the parasitic capacitances and causes injection of narrow peaky current to ground. This results in high EMI noise level. A topology consisting of a single phase PWM-rectifier with LCL filter, utilising bipolar PWM method is proposed which reduces the EMI noise level by more than 30dB. This filter topology is shown to be insensitive to the switching delays between the legs of the inverter. The proposed topology eliminates high dv/dt from the dc-bus CM voltage by making it sinusoidal. Hence, the high frequency CM current injection to ground is minimized.

Item Type:	Conference Proceedings
Publisher:	IEEE
Additional Information:	Copy right for this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Keywords:	Conducted Emissions (CEs); Electromagnetic Compatibility (EMC) Measurements; Single-phase PWM Rectifier; Unipolar PWM; Bipolar PWM
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	24 Apr 2015 06:24
Last Modified:	24 Apr 2015 06:24
URI:	http://eprints.iisc.ac.in/id/eprint/51411

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