@inproceedings{8e7e78d8b7734f619b1dc618b5c4fb5b,
title = "Stability of voltage and frequency control in distributed generation based on parallel-connected converters feeding constant power loads",
abstract = "In this paper stability and dynamic properties of voltage and frequency droop control of power electronic converters are investigated for a distributed generation system. Droop control is utilized to share active and reactive power among the source converters. The voltage and frequency controllers are designed so that stand-alone converter operation feeding constant power loads performs satisfactory. These controllers are adapted to mimic the behaviour of present rotating generators connected directly to the power system, for seam-less transfer between island and grid-connected modes of operation. The target system for the analysis is a stand-alone system to which three power electronic converters and one rotating generator could be connected (Fig. 1). Small-signal and switch-mode, time-domain simulation results of a threeconverter distributed generation system facilitating stand-alone operation verify the operation. Simulation and experimental results of a three-converter stand-alone system, with and without a rotating generator present, are also included for verification.",
keywords = "three-converter stand-alone system, stand-alone converter operation, reactive power sharing, active power sharing, power electronic converters, droop control, voltage control, constant power loads, frequency control, rotating generators, three-converter distributed generation system, parallel-connected converters",
author = "Per Karlsson and Johan Bj{\"o}rnstedt and Magnus Str{\"o}m",
year = "2007",
language = "English",
volume = "17",
publisher = "EPE Association",
number = "3",
pages = "38--46",
booktitle = "EPE Journal",
}