期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 28, 期 4, 页码 1980-1993出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2012.2205944
关键词
Distributed generation systems; droop control; Microgrid
资金
- National Science Council of Taiwan [NSC-98-3114-E-007-004]
Microgrid is widely accepted as an effective mean of integrating various distributed energy resources (DERs) through their interface converters to provide electric power of high quality and reliability. These distributed resources interface converters can operate in an autonomous fashion without any communication for enhanced system reliability and reduced complexity. Conventionally, the real power-frequency droop control and the reactive power-voltage magnitude droop are adopted as the decentralized control strategies in these DERs interface converters for the autonomous power sharing operations. However, the reactive power sharing of Q-V droop control often deteriorates due to its dependence on the line impedances. In this paper, a Q-(V) over dot droop control method with (V) over dot restoration mechanism is proposed to improve reactive power sharing. Its operation principle and control method are explained and analyzed. Simulation and experimental results are presented to validate the effectiveness of the proposed method.
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