Filter configuration and PWM method for single phase inverters with reduced conducted EMI noise

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

5 Citations (Scopus)

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.

Original languageEnglish
Title of host publicationIEEE Transportation Electrification Conference and Expo, ITEC Asia-Pacific 2014 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Electronic)9781479942398
DOIs
Publication statusPublished - 1 Jan 2014
Event2014 IEEE Transportation Electrification Conference and Expo, ITEC Asia-Pacific 2014 - Beijing, China
Duration: 31 Aug 20143 Sep 2014

Conference

Conference2014 IEEE Transportation Electrification Conference and Expo, ITEC Asia-Pacific 2014
CountryChina
CityBeijing
Period31/08/143/09/14

Keywords

  • Bipolar PWM
  • Conducted Emissions (CEs)
  • Electromagnetic Compatibility (EMC) Measurements
  • Single-phase PWM Rectifier
  • Unipolar PWM

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