A Novel Dual Buck and Boost Transformer-less Single-Phase Grid-tied Inverter

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

1 Scopus Citations
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Author(s)

  • Houqing Wang
  • Weimin Wu
  • Jihong Zhu
  • Eftichios Koutroulis
  • Frede Blaabjerg

Detail(s)

Original languageEnglish
Pages (from-to)4211-4224
Journal / PublicationIEEE Transactions on Power Electronics
Volume37
Issue number4
Online published19 Oct 2021
Publication statusPublished - Apr 2022

Abstract

Conventional dual buck & boost inverter with a single input DC source (DBBI-SIDS) has the satisfactory performance of high efficiency, low total capacitance and no leakage current. Nevertheless, the main current will flow through the two individual capacitors of the inverter, which may reduce their lifetimes. In this paper, a new DBBI-SIDS will be proposed, where two extra MOSFET switches at line frequency are adopted to be instead of the two individual capacitors of the conventional DBBI-SIDS. Different from the conventional DBBI-SIDS, the new inverter works in the pure full bridge mode. The detailed principle of operation is presented through equivalent circuits. The static characteristics and the control strategy of the proposed inverter will be also introduced in details. A 110 V/ 50 Hz / 550 W prototype has been developed in lab, where experimental results have verified the desired performance of the proposed inverter.

Research Area(s)

  • Capacitors, dead beat control (DBC), dual buck & boost, Inverter, single input DC source, dual-mode time-sharing

Citation Format(s)

A Novel Dual Buck and Boost Transformer-less Single-Phase Grid-tied Inverter. / Wang, Houqing; Wu, Weimin; Zhu, Jihong; Koutroulis, Eftichios; Chung, Henry Shu-Hung; Blaabjerg, Frede.

In: IEEE Transactions on Power Electronics, Vol. 37, No. 4, 04.2022, p. 4211-4224.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review