Dynamic Phasor Modeling of a Hybrid AC/DC Microgrid
The dynamic phasor (DP) model of a hybrid AC/DC microgird is proposed in this paper. This hybrid microgrid consists of an interlinking converter (ILC), wind turbine (WT) system, photovoltaic (PV) system and energy storage (ES) system, and can operate under either grid-connected mode or autonomous mode. A comprehensive definition of the dynamic phasor is given to make the developed model more compact and the physical meaning more clear. The developed microgrid model is validated by comparing with a detailed model considering switch operations in Matlab/Simulink. By comparison, the DP model turns out to consume much less time and have a satisfactory accuracy under various disturbances.
KeywordsDynamic phasor Energy storage Hybrid microgrid Interlinking converter Multiple-Shifted-Frequency (MSF) method Photovoltaic Wind turbine
This work was supported in part by National Key R&D Plan (2016YFB0900601) and State Grid Technology Program (study on principle, design and control technology of new operation mode of micro-grid based on electric spring).
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