PROJECT TITLE :
Distributed Coordination of Multiple PMSGs in an Islanded DC Micro grid for Load Sharing - 2017
For wind-powered dc microgrids working auto-nomously, the accessible wind generation might be greater than the load demand, and hence, might cause offer–demand imbalance. To address this issue, this paper presents a new distributed load sharing control scheme, that coordinates the operation of multiple permanent magnet synchronous generators (PMSGs) in a very dc microgrid. This theme includes a 2-layer structure. Primarily based on the distributed model predictive control approach, the upper layer controllers cooperatively optimize the operation of parallel-connected buck converters, which serve as the interfaces between PMSGs and microgrid bus. The optimized power references are sent to the lower layer wind generator controllers for execution. This manner, the optimal load sharing among multiple PMSGs is achieved. The salient feature of the proposed scheme is that it optimizes the management actions in a very distributed manner, that ensures that multiple PMSGs cooperate, instead of compete, with each other in achieving system-wide objectives. Simulation results verify the effectiveness of the proposed theme.
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