Abstract
The main aim of this study is to facilitate controlled power flow in a hybrid microgrid (MG) containing an AC and a DC side. These two sides are connected through an interlinking converter (IC). It has been assumed that distributed generators (DGs) in the AC side and the DC side supply their local loads through AC and DC droops respectively. During a power shortfall in one of the two sides, the required amount of is drawn from the other side through the interlinking converter. A new approach is proposed in this paper in which power shortfall is detected in the ac side though frequency and by voltage in the dc side. The IC is then controlled such that bi-directional power flow can be achieved. Simulation studies are conducted on PSCAD/EMTDC to validate the proposal.
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