Integrated common-mode inductor design for parallel interleaved converters

Mohammad Hassan Hedayati* (Corresponding Author), Vinod John

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Paralleling power converters can increase the power rating and reliability of the overall system. Interleaving the carrier in parallel converters helps in reduction of output current distortion, and in reduction of electromagnetic interference noise. This study presents a common-mode inductor design for parallel interleaved converters, which integrates the inter-phase and boost inductors together in a novel structure. It is shown that the proposed magnetic structure accommodates a wider range of desirable electromagnetic parameters. Step-by-step design procedure of the proposed integrated common-mode inductor (ICMI) is presented. The proposed ICMI design results in fewer components, reduces the size and the cost of overall system. The proposed ICMI is compared with a design available in literature using an example. Existing design procedure imposes constraints on the core geometry that are not suitable for high-power designs. The proposed design makes use of standard C cores that improves manufacturability. Experimental results from a 7.5 kVA parallel single-phase power converter show the effectiveness of the proposed ICMI.
Original languageEnglish
Pages (from-to)2130-2138
Number of pages9
JournalIET Power Electronics
Issue number10
Publication statusPublished - 17 Aug 2016

Bibliographical note

We would like to thank the Department of Heavy Industry (DHI) Government of India for funding this project and supporting us. We also would like to thank Hitachi Metglas India for supplying the amorphous cores. The basics of this paper [19] has been presented at IEEE International Conference on Power Electronics, Drives and
Energy System (IEEE PEDES 2014) on 16–19 December 2014, IIT Bombay, Mumbai, India. However, this paper is upgrade by more than 30–40% with respect to the conference paper.


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