Isolated discontinuous energy pump-source inverters

Seyed Mohammad Dehghan, Ebrahim Seifi, Mustafa Mohamadian, Amir Hossein Rajaei, Arash Amiri

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Recently, several single-stage buck-boost inverters, such as Z-source inverter (ZSI), Luo-source inverter and Cuk-source inverter, have been developed. These inverters are considered as discontinuous energy pump-source inverters (DEPSI), since these inverters benefit from a pump circuit with discontinuous output voltage as front-end stage. Considering the concept, this study adds two new converters (Zeta and Forward-source inverters) to this family and compares DEPSIs (including already investigated and the presented inverters) and two-stage converters using DC/DC converter as the boost stage regarding several criteria: 1-boost capability, 2-cost, 3-efficiency and 4-passive components requirement. The results are discussed to determine the appropriate topology according to different voltage gains. Also, a new control algorithm called minimum constant boost control for optimum control of Luo, Cuk and Zeta source inverters has been proposed here, which is used in the analysis and comparison. Experimental tests for a 250 W prototype of the converters are performed, which confirm the simulations and theoretical results.

Original languageEnglish
Article number6783550
Pages (from-to)984-997
Number of pages14
JournalIET Power Electronics
Issue number4
Early online date1 Apr 2014
Publication statusPublished - 1 Apr 2014
Externally publishedYes


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