Single-phase HFAC microgrid with active filters and DIEMS

The proposed DIEMS (distributed intelligent energy management system) allow instantaneous optimization of alternative and renewable power sources. The use of storage requires an optimization scheme that considers the time-integral part of the load flow. So, the energy management has to perform energy scheduling a single day or multiple days ahead. An intelligent energy management system in thus required which enables short-term energy allocation scheduling at minimun costs based on power generation and load demand. The function of the DIEMS is to generate set points for all the sources and storages in such a way that economically optimized power dispatch will be maintained to fulfill certain load demand. Generation forescast as well as some fast online algorithms are used to define the energy availability and, finally, to define the optimized power dispatch signals to the loads, as well as to the grid using UPLC (universal active power line conditioner). This energy management system, consists of prediction modulo, optimization module, and online control module, is shown in Figure.

Source:
Sudipta Chakraborty, Manoja D. Weiss and M. Godoy Simöes “Distributed Intelligent Energy Management System for a Single-Phase High-Frequency AC Microgrid” IEEE Transactions on Industrial Electronics. Vol. 54, No. 1, February 2007.




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