Bulletin of the Polish Academy of Sciences Technical Sciences, ( ISI ), Volume (62), No (2), Year (2014-6) , Pages (367-373)

Title : ( A simplified control strategy for single-phase UPS inverters )

Authors: Mohammad Monfared ,

Citation: BibTeX | EndNote

Though there are many strategies to control single-phase uninterruptible power supply (UPS) inverters, they suffer from some drawbacks, the main being complexity. This paper proposes a simple dual-loop controller for the single-phase UPS inverter with an LC filter. The suggested control scheme uses the capacitor current as the feedback signal in the inner current loop. No fictitious phase generation or reference frame transformations are required, and simple proportional gains are employed as both voltage and current regulators. A feedforward of the derivative of the output voltage is also proposed, which significantly improves the performance of the closed loop control system. Then, based on the model of the inverter with the proposed control strategy, a simple and systematic design procedure is presented. Finally, the theoretical achievements are supported by extensive simulations.

Keywords

, single-phase UPS, multi-loop feedback,
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@article{paperid:1041943,
author = {Monfared, Mohammad},
title = {A simplified control strategy for single-phase UPS inverters},
journal = {Bulletin of the Polish Academy of Sciences Technical Sciences},
year = {2014},
volume = {62},
number = {2},
month = {June},
issn = {0239-7528},
pages = {367--373},
numpages = {6},
keywords = {single-phase UPS; multi-loop feedback; feedforward},
}

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%0 Journal Article
%T A simplified control strategy for single-phase UPS inverters
%A Monfared, Mohammad
%J Bulletin of the Polish Academy of Sciences Technical Sciences
%@ 0239-7528
%D 2014

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