Frequency-Dependent Droop Control for Distributed Generation in Microgrids

Konferenz: PCIM Asia 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
27.06.2017 - 29.06.2017 in Shanghai, China

Tagungsband: PCIM Asia 2017

Seiten: 7Sprache: EnglischTyp: PDF

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Qi, Yang; Fang, Jingyang; Tang, Yi (Nanyang Technological University, Singapur)

This paper proposes a frequency-dependent droop control scheme to coordinate multiple inverter-interfaced distributed generation (DG) systems in a microgrid. By tuning the output impedances of individual inverters to be frequency-dependent, system real and reactive power can be proportionally shared by different DGs according to their capacities, while harmonic power can be mainly supplied by those inverters with high switching frequency or control bandwidth, such that good power quality can be assured for the microgrid. Simulation results are provided to verify the effectiveness of the proposed control.