Delta-connected cascaded H-bridge multilevel photovoltaic converters

Yifan Yu, Georgios Konstantinou, Christopher D. Townsend, Ricardo P. Aguilera, Branislav Hredzak, Vassilios G. Agelidis

Research output: Chapter in Book/Conference paperConference paper

8 Citations (Scopus)


Multilevel cascaded H-bridge converters are becoming popular for next generation large-scale photovoltaic power converters. However, the power generation levels in the three phases can be significantly unequal, especially in a large plant, owing to the non-uniform irradiance levels and/or ambient temperatures. This paper proposes the delta-connected cascaded H-bridge converter for large-scale photovoltaic farms. Compared to the existing star connection, the delta connection reduces the converter overrating required. Experimental results obtained from a 430 V, 10 kW, three-phase, seven-level, delta connected cascaded H-bridge converter prototype are provided to demonstrate the superiority of the delta connection.

Original languageEnglish
Title of host publicationIECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages6
ISBN (Electronic)9781479917624
Publication statusPublished - 1 Jan 2015
Externally publishedYes
Event41st Annual Conference of the IEEE Industrial Electronics Society, IECON 2015 - Yokohama, Japan
Duration: 9 Nov 201512 Nov 2015


Conference41st Annual Conference of the IEEE Industrial Electronics Society, IECON 2015


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