New configuration of dynamic voltage restorer for medium voltage application

Arash Khoshkbar-Sadigh, Vahid Dargahi, Keith Corzine

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

One of the undesirable power quality phenomenon in the distribution systems is voltage sag which risks the operation of sensitive loads. Dynamic voltage restorer (DVR) is well-known and reliable solution to mitigate this phenomenon and protect the sensitive loads. This paper proposes new configuration of DVR for medium-voltage applications. The proposed configuration contains diode rectifier to converter power grid voltage to medium-voltage dc link which is split between capacitors working at low-voltage level. Next stage is couple of full bridge (FB) dc-dc converters which are stacked together and each is fed with low voltage. Each FB dc-dc converter contains high-frequency (HF) transformer to make isolated dc link for each phase since DVR needs to inject isolated voltage in each phase individually. Last stage of proposed configuration is the cascaded multicell inverter (CMI) which works as series converter of DVR to inject required voltage. The output of each FB dc-dc converters are fed to one cell of CMI. CMI is controlled with phase shifted sinusoidal pulse width modulation to absorb the same power from each cell causing to split the voltage of main dc link equally between low-voltage capacitors. Simulation results of the proposed configuration are presented to show the performance and effectiveness of the circuit.

Original languageEnglish (US)
Title of host publication2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2187-2193
Number of pages7
ISBN (Electronic)9781467383936
DOIs
StatePublished - May 10 2016
Event31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016 - Long Beach, United States
Duration: Mar 20 2016Mar 24 2016

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2016-May

Other

Other31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016
CountryUnited States
CityLong Beach
Period3/20/163/24/16

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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    Khoshkbar-Sadigh, A., Dargahi, V., & Corzine, K. (2016). New configuration of dynamic voltage restorer for medium voltage application. In 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016 (pp. 2187-2193). [7468170] (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2016-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2016.7468170