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논문 기본 정보

자료유형
학술대회자료
저자정보
Teng Wu (Xi’an Jiaotong University) Jinjun Liu (Xi’an Jiaotong University) Zeng Liu (Xi’an Jiaotong University) Shike Wang (Xi’an Jiaotong University) Baojin Liu (Xi’an Jiaotong University)
저널정보
전력전자학회 ICPE(ISPE)논문집 ICPE 2015-ECCE Asia
발행연도
2015.6
수록면
722 - 727 (6page)

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The well-known active power-frequency and reactive power-voltage amplitude droop control is widely used in the coordinative control of parallel inverters in microgrids. However, this conventional droop method may cause frequency and voltage deviation, which affects the accuracy of power supply. This paper proposes a novel secondary control strategy to compensate this deviation. This strategy mimics the Master-Slave control but requires no communication lines among the parallel inverters. The master inverter adopts conventional droop method (using power to control frequency and voltage amplitude) and is controlled as a voltage source while the slave inverters adopt reversed droop method (using frequency and voltage amplitude to control power) and are controlled as current sources. The droop characteristic bias of slave inverters is designed online based on the estimation of load power demand. Through this method, frequency and voltage deviation can be eliminated and power sharing can be realized among all the slave inverters. Simulation and experimental results are provided to prove the effectiveness of the proposed control strategy.

목차

Abstract
I. INTRODUCTION
II. CONVENTIONAL DROOP CONTROL METHOD
III. PROPOSED CONTROL STRATEGY
IV. SIMULATION RESULTS
V. EXPERIMENTAL VERIFICATION
VI. CONCLUSION
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