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

Yam P. Siwakoti; Graham Town

doi:10.1109/APEC.2014.6803577

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

Yam P. Siwakoti, Graham Town

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	2014 IEEE Applied Power Electronics Conference and Exposition (APEC 2014)
Place of Publication	Piscataway, N.J.
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	1973-1978
Number of pages	6
ISBN (Electronic)	9781479923250, 9781479923267
ISBN (Print)	9781479958986
DOIs	https://doi.org/10.1109/APEC.2014.6803577
Publication status	Published - Mar 2014
Event	29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC - 2014 - Fort Worth, United States Duration: 16 Mar 2014 → 20 Mar 2014

Other

Other	29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC - 2014
Country	United States
City	Fort Worth
Period	16/03/14 → 20/03/14

Access to Document

10.1109/APEC.2014.6803577

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Cite this

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title = "Improved modulation Technique for voltage fed quasi-Z-source DC/DC converter",

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.",

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Siwakoti, YP & Town, G 2014, Improved modulation Technique for voltage fed quasi-Z-source DC/DC converter. in 2014 IEEE Applied Power Electronics Conference and Exposition (APEC 2014)., 6803577, Institute of Electrical and Electronics Engineers (IEEE), Piscataway, N.J., pp. 1973-1978, 29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC - 2014, Fort Worth, United States, 16/03/14. https://doi.org/10.1109/APEC.2014.6803577

Improved modulation Technique for voltage fed quasi-Z-source DC/DC converter. / Siwakoti, Yam P.; Town, Graham.

2014 IEEE Applied Power Electronics Conference and Exposition (APEC 2014). Piscataway, N.J. : Institute of Electrical and Electronics Engineers (IEEE), 2014. p. 1973-1978 6803577.

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

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AB - 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.

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