A new leakage energy commutation technique for single stage high frequency link inverters

Srikant Gandikota, Ned Mohan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a commutation technique to overcome the effects of transformer leakage inductance in a single stage high frequency ac-link transformer isolated inverter. The presence of leakage inductance causes large voltage spikes across the transformer due to the switched nature of link current that is encountered in direct high frequency ac link to low frequency ac conversion. This paper proposes a partial resonant technique where a capacitor is connected across the link only during the instants when the current in the link needs to change its polarity. This results in a resonant current transition which eliminates the problem of abrupt current transition through an inductor. The proposed technique results in the recovery of the leakage energy to a large extent and also results in soft switching during majority of the switching transitions resulting in enhanced efficiency. The proposed scheme is implemented in the SIMULINK software environment and results are presented.

Original languageEnglish (US)
Title of host publication2014 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479963737
DOIs
StatePublished - Feb 12 2014
Event2014 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2014 - Mumbai, India
Duration: Dec 16 2014Dec 19 2014

Publication series

Name2014 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2014

Other

Other2014 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2014
Country/TerritoryIndia
CityMumbai
Period12/16/1412/19/14

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

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