High frequency ac-link transformer isolated three phase inverter with natural commutation of leakage energy

Srikant Gandikota, Ned Mohan

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

7 Scopus citations

Abstract

A high frequency ac link, transformer isolated three phase inverter capable of bidirectional power flow is presented in this paper. Such an inverter finds widespread use in applications like interfacing alternate energy sources to the grid, UPS systems. A resonant LC circuit is used to achieve natural commutation of leakage energy in the leakage inductance of the transformer. This natural commutation of leakage energy eliminates the need for additional circuitry otherwise needed to commutate the trapped energy. Additionally, the high frequency ac link makes it possible to reduce the size of the transformer resulting in a lower cost and a compact design. The ac link is utilized to achieve zero voltage switching in the output cycloconverter. A 3 phase, 5kW inverter is simulated in the SIMULINK environment and the results are discussed.

Original languageEnglish (US)
Title of host publication7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014
PublisherInstitution of Engineering and Technology
Volume2014
Edition628 CP
ISBN (Print)9781849198158
StatePublished - 2014
Event7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014 - Manchester, United Kingdom
Duration: Apr 8 2014Apr 10 2014

Publication series

Name7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014

Other

Other7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014
CountryUnited Kingdom
CityManchester
Period4/8/144/10/14

Keywords

  • High frequency ac link
  • Leakage energy
  • Power electronic transformer

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    Gandikota, S., & Mohan, N. (2014). High frequency ac-link transformer isolated three phase inverter with natural commutation of leakage energy. In 7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014 (628 CP ed., Vol. 2014). (7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014). Institution of Engineering and Technology.