PROJECT TITLE :

Distributed Coordination of Multiple PMSGs in an Islanded DC Micro grid for Load Sharing - 2017

ABSTRACT:

For wind-powered dc microgrids working auto-nomously, the available wind generation may be greater than the load demand, and hence, could cause offer–demand imbalance. To handle this issue, this paper presents a new distributed load sharing control theme, which coordinates the operation of multiple permanent magnet synchronous generators (PMSGs) in a very dc microgrid. This scheme features a 2-layer structure. Based mostly on the distributed model predictive management approach, the higher layer controllers cooperatively optimize the operation of parallel-connected buck converters, which function the interfaces between PMSGs and microgrid bus. The optimized power references are sent to the lower layer wind generator controllers for execution. This approach, the optimal load sharing among multiple PMSGs is achieved. The salient feature of the proposed theme is that it optimizes the control actions in a distributed manner, that ensures that multiple PMSGs cooperate, rather than compete, with every different in achieving system-wide objectives. Simulation results verify the effectiveness of the proposed scheme.