Increasing voltage utilization in split-link, four-wire inverters

Liang, Jun ORCID: https://orcid.org/0000-0001-7511-449X, Green, T. C., Feng, C. M. and Weiss, G. 2009. Increasing voltage utilization in split-link, four-wire inverters. IEEE Transactions on Power Electronics 24 (6) , pp. 1562-1569. 10.1109/TPEL.2009.2013351

Full text not available from this repository.

Abstract

Three-phase four-wire inverters, with either three-leg or four-leg topology, are useful for interfacing distributed generation to networks of unbalanced loads, but neither of the available circuit topologies is ideal. The split-link three-leg topology (with six switches) suffers from poor DC voltage utilization compared with the four-leg topology (with eight switches). The four-leg topology has an electromagnetic compatibility (EMC) difficulty because it imposes large-amplitude high-frequency voltages between the DC-link busbars and ground. To obtain both good dc voltage utilization and good EMC performance, it is proposed to use a split-link inverter with an active balancing circuit (also eight switches). The balancing circuit is used to modulate the DC busbar offset voltage to make better use of the available DC-link voltage. The optimum voltage term is established to be a third harmonic term, and the DC voltage utilization is improved. A deadbeat controller supplemented with a repetitive controller is designed to give good tracking and good disturbance rejection for the busbar offset voltage. System performance is studied through an experimental test rig.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Uncontrolled Keywords:	Busbar offset modulation; dc link; four-wire inverter; repetitive control; voltage utilization
Publisher:	IEEE
ISSN:	0885-8993
Last Modified:	17 Oct 2022 10:31
URI:	https://orca.cardiff.ac.uk/id/eprint/8285

Citation Data

Cited 70 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item