Improved modulation Technique for voltage fed quasi-Z-source DC/DC converter

Yam P. Siwakoti, Graham Town

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

24 Citations (Scopus)

Abstract

A new shoot-through pulse width modulation (PWM) technique for voltage fed quasi-Z-source DC/DC converters is presented. One advantage of the technique is it minimizes switching losses in the converter by minimizing the number of switching commutations of the active devices in the intermediate H-bridge. The duration of the active and shoot-through states are independently controllable, allowing the shoot-through duty cycle to reach its maximum limit (D st, max = 0.5), thus enabling a high voltage gain suitable for applications with renewable energy sources (fuel cells, photovoltaics) and other applications requiring a large voltage boost. In addition, the switches achieve zero voltage switching (ZVS) which reduce EMI and improves efficiency of the converter. A 500W prototype converter was implemented demonstrating improved performance with the new modulation technique.

Original languageEnglish
Title of host publication2014 IEEE Applied Power Electronics Conference and Exposition (APEC 2014)
Place of PublicationPiscataway, N.J.
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1973-1978
Number of pages6
ISBN (Electronic)9781479923250, 9781479923267
ISBN (Print)9781479958986
DOIs
Publication statusPublished - Mar 2014
Event29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC - 2014 - Fort Worth, United States
Duration: 16 Mar 201420 Mar 2014

Other

Other29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC - 2014
CountryUnited States
CityFort Worth
Period16/03/1420/03/14

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