NDLI: Unbalanced operation of per-phase vector controlled four-leg grid forming inverter for stand-alone hybrid systems

Content Provider	IEEE Xplore Digital Library
Author	Ninad, N.A. Lopes, L.A.C.
Copyright Year	2012
Description	Author affiliation: Department of Electrical and Computer Engineering, Concordia University, Montreal, Quebec, Canada (Ninad, N.A.; Lopes, L.A.C.)
Abstract	Electricity in stand-alone systems (mini-grids) is usually provided by diesel generator sets (gensets). Hybridizing such systems with renewable energy sources (RESs) and storage units helps reducing the environmental impact and cost of electricity generation. In general, RESs inject as much power as possible while the diesel power plant operates as the grid forming element, balancing active and reactive power in the hybrid mini-grid. Whenever there is enough renewable power available to meet the forecasted load, it is possible to shut down the diesel power plant leading to operation with minimum cost. In such a case, a battery inverter with appropriate storage capacity takes over the grid forming task. Mini-grids often present a three-phase four-wire configuration allowing the connection of three-phase and single-phase loads and RESs. This imposes a significant burden on the grid forming battery inverter which has to cope with issues such as highly unbalanced loads while ensuring good power quality. This paper proposes a new per-phase vector control strategy for a four-leg grid forming inverter that provides balanced voltage with enhanced dynamic response even when it has to supply active power in two phases and absorb in the other one, due to the presence of a single-phase RES.
Starting Page	3500
Ending Page	3505
File Size	3454960
Page Count	6
File Format	PDF
ISBN	9781467324199
ISSN	1553572X
e-ISBN	9781467324212
e-ISBN	9781467324205
DOI	10.1109/IECON.2012.6389337
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-25
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electricity Inverters
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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