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.
| Original language | English |
|---|---|
| Pages (from-to) | 38-46 |
| Journal | Epe Journal: European Power Electronics and Drives Journal |
| Volume | 17 |
| Issue number | 3 |
| Publication status | Published - 2007 |
Bibliographical note
This article is an expanded version of the conference publication:P. Karlsson J. Björnstedt and M. Ström (2005), "Stability of Voltage and Frequency Control in Distributed Generation Based on Parallel-Connected Converters Feeding Constant Power Loads", EPE 2005 Conference Proceedings, Dresden, Germany, September 2005, (CD ROM pages 10).
Subject classification (UKÄ)
- Other Electrical Engineering, Electronic Engineering, Information Engineering