DC microgrid shared DC bus

Does current sharing influence voltage regulation in DC microgrids?

5. Conclusions This paper studied the mechanism of interaction between current sharing and voltage regulation in DC microgrids, according to which, a novel control method was proposed which takes into account the degree of compromise of current sharing and voltage consensus, and can precisely regulate the bus voltage of a critical node.

Does droop control affect current sharing in Multi-Bus DC microgrids?

For multi-bus DC microgrids, accurate current sharing will be deteriorated by uncertain resistances between buses ( Beerten & Belmans, 2013 ). To achieve accurate current sharing, an established way is to employ consensus based cooperative control strategies to compensate droop control ( Nasirian et al., 2015 ).

What are the control objectives of DC microgrids?

In the present paper, we focus on two main control objectives in the operation of DC microgrids, namely voltage regulation and load sharing. Voltage regulation seeks to maintain the bus voltages within a reasonable neighborhood around their rated values. Load sharing means to ensure a fair power allocation amongst DGs.

What is load sharing in DC microgrids?

Load sharing means to ensure a fair power allocation amongst DGs. In DC microgrids, the objective of load sharing is often implemented in terms of current sharing ( Dragičević et al., 2015 ). To achieve these objectives, usually a hierarchical control scheme is adopted in DC microgrids ( Bidram & Davoudi, 2012 ).

Can a multi-bus dc microgrid be modeled?

Generic meshed DC microgrids with long-distance transmission lines can be modeled by multi-bus DC microgrids, where impedances of the transmission lines cannot be neglected. In multi-bus DC microgrids, voltage regulation and current sharing turn out to be conflicting objectives ( Han et al., 2019 ).

Do DC microgrids have a curate voltage regulation and accurate current sharing?

It is well known that in DC microgrids, a curate voltage regulation and accurate current sharing are two conflic ing objectives (Han et al., 2019; Tucci et l., 2018).