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Investigations on EMI Mitigation Techniques: Intent to Reduce Grid-Tied PV Inverter Common Mode Current and Voltage

descriptionPublicationkeyboard_double_arrow_right Article , Journal , Other literature type 03 Sep 2019 Denmark Publisher:MDPI AGJournal:Energies, volume 12, page 3,395 (eissn: 1996-1073,

Authors: Umashankar Subramaniam; Sagar Mahajan Bhaskar; Dhafer J.Almakhles; Sanjeevikumar Padmanaban; Zbigniew Leonowicz;

doi: 10.3390/en12173395

Investigations on EMI Mitigation Techniques: Intent to Reduce Grid-Tied PV Inverter Common Mode Current and Voltage

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Abstract

Power inverters produce common mode voltage (CMV) and common mode current (CMC) which cause high-frequency electromagnetic interference (EMI) noise, leakage currents in electrical drives application and grid-connected systems, which consequently drops the efficiency of the system considerably. This CMV can be mitigated by designing suitable EMI filters and/or investigating the effects of different modulation strategies. In this paper, the effect of various modulation techniques over CMV and CMC are investigated for two-level and three-level inverters. It is observed that the modified third harmonic injection method reduced the CMV and CMC in the system by 60%. This modified pulse width modulation (PWM) technique is employed along with EMI chokes which results in reduced distortion of the system.

Country

Denmark

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Keywords

Technology, TELEMATICS, T, electromagnetic interference, PULSE width modulation, ELECTRIC potential, modulation techniques, mitigation, PULSE width modulation transformers, common mode voltage, ELECTROMAGNETIC interference, common mode current, grid connected inverters

Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	13
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Average
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%