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Stability of Voltage and Frequency Control in Distributed Generation Based on Parallel-Connected Converters Feeding Constant Power Loads
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| Author(s) |
STROeM Magnus; KARLSSON Per; BJOeRNSTEDT Johan |
| 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. Small-signal and switch-mode, time-domain simulation results of a three-converter distributed generation system facilitating stand-alone operation verify the operation. Experimental results of a three-converter stand-alone system are also included for verification. |
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| Filename: | 0355 |
| Filesize: | 946.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-08 by System |
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