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H5+ converter: A bidirectional AC-DC converter with DC-fault-blocking and self-pre-charge capabilities

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Title: H5+ converter: A bidirectional AC-DC converter with DC-fault-blocking and self-pre-charge capabilities
Authors: Wang, Y
Li, Y
Junyent Ferre, A
Kim, M
Item Type: Journal Article
Abstract: A pulse-width-modulation (PWM) bidirectional ac-dc converter (i.e., active rectifier) with dc-faultblocking and self-pre-charge capabilities is proposed in this paper for low-voltage dc (LVDC) applications. The proposed converter, which is named as ”H5 + converter”, consists of an H4 bridge, a bidirectional switch, and a transient-voltage-surge (TVS) diode. The bidirectional switch and the TVS diode enable the dc-fault blocking and dc-bus self-pre-charge, while preserving the low common mode voltage noise and low leakage current of the converter. Additionally, the proposed H5+ converter has advanced features under a dc-side short circuit fault, such as fault diagnosis and fault recovery. Operation principles of the proposed converter are presented and analyzed. A down scaled prototype is built. Experiment results are shown and analyzed, including steady-state waveforms, common-mode performance, start-up dynamics, as well as dc fault blocking, fault diagnosis, and fault recovery. Moreover, the proposed converter is compared with other two dc-fault blocking converters for LVDC applications, in terms of converter capabilities, required devices, and power switch losses.
Issue Date: 1-Nov-2019
Date of Acceptance: 9-Feb-2019
URI: http://hdl.handle.net/10044/1/66405
DOI: 10.1109/TPEL.2019.2900618
ISSN: 0885-8993
Publisher: Institute of Electrical and Electronics Engineers
Start Page: 10619
End Page: 10634
Journal / Book Title: IEEE Transactions on Power Electronics
Volume: 34
Issue: 11
Copyright Statement: © 2019 Institute of Electrical and Electronics Engineers.
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/N034570/1
Keywords: Science & Technology
Technology
Engineering, Electrical & Electronic
Engineering
AC-DC power conversion
power distribution faults
protection
pulsewidth modulated power converters
MULTILEVEL CONVERTER
PWM INVERTERS
HYBRID
NETWORK
CIRCUIT
SYSTEMS
LOSSES
DESIGN
0906 Electrical and Electronic Engineering
Electrical & Electronic Engineering
Publication Status: Published
Online Publication Date: 2019-02-20
Appears in Collections:Electrical and Electronic Engineering
Faculty of Engineering