Power flow control and power quality enhanced operation of multi-functional AC-DC micro parks

Abstract

Power quality and load management are being considered as two most important features of the recent hybrid micro parks. In this paper, a control and effective management philosophy has been proposed for hybrid micro parks. The renewable energy resources such as solar PV, wind energy conversion system along with energy storage have been integrated to the individual DC links and consequently, these independent DC micro parks are being interconnected to the common AC link via tightly regulated power electronics interfaces. The AC link interfacing converters transfer the real power from the renewable energy resources along with power quality enhanced features. An integrated boost DC-DC high gain power converter has been used as a solar peak power point tracker and on the other hand, a fully controlled AC-DC converter have been utilized as a wind peak point tracker from the permanent magnet synchronous generator (PMSG) based wind energy conversion system. Energy time shifting and power flow management are the key features being provided by the energy storage system. The effectiveness of the proposed coordinated methodology for aforementioned hybrid micro parks has been verified by the detailed digital simulation studies.