Design and comparison of a 10-kW interleaved boost converter for PV application using Si and SiC devices

Research output: Contribution to journalArticleScientificpeer-review

42 Citations (Scopus)
222 Downloads (Pure)

Abstract

Grid-connected photovoltaic (PV) inverters have a dc/dc converter connected to the PV for executing the maximum power point tracking. The design of an interleaved boost converter (IBC) with three switching legs for a 10-kW PV inverter is presented in this paper. This paper shows how the use of silicon carbide (SiC) switches and powdered iron core inductors enables the operation of the converter at a higher switching frequency and when increasing the converter power density. The IBC is designed using a 1.2-kV SiC MOSFET and Schottky diodes and Kool Mμ powdered iron inductors. The design is compared with an IBC built with a silicon (Si) IGBT, fast recovery Si diodes, and ferrite cores. The use of SiC devices reduces the switching loses drastically and there are no reverse recovery losses, resulting in improved efficiency. The higher frequency and higher saturation flux density of the powdered iron core enable the reduction in core size by three times. A 10-kW prototype is built and tested for both the Si and SiC designs and compared with theoretical estimations.

Original languageEnglish
Article number7546915
Pages (from-to)610-623
Number of pages14
JournalIEEE Journal of Emerging and Selected Topics in Power Electronics
Volume5
Issue number2
DOIs
Publication statusPublished - 1 Jun 2017

Keywords

  • Interleaved boost converter (IBC)
  • Photovoltaic (PV) systems
  • Powered iron core
  • Silicon carbide (SiC)

Fingerprint Dive into the research topics of 'Design and comparison of a 10-kW interleaved boost converter for PV application using Si and SiC devices'. Together they form a unique fingerprint.

Cite this