Stability of voltage and frequency control in distributed generation based on parallel-connected converters feeding constant power loads
Author
Summary, in English
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.
Department/s
Publishing year
2007
Language
English
Pages
38-46
Publication/Series
EPE Journal
Volume
17
Issue
3
Links
Document type
Conference paper
Publisher
EPE Association
Topic
- Other Electrical Engineering, Electronic Engineering, Information Engineering
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
Status
Published
ISBN/ISSN/Other
- ISSN: 0939-8368