About Reasons for microgrid current sharing
In this paper, the problem of distributed event-based control of large scale power systems is addressed. Towards this end, a Direct Current (DC) microgrid that is composed of multiple interconnected Distributed Generation Units (DGUs) is considered.
In this paper, the problem of distributed event-based control of large scale power systems is addressed. Towards this end, a Direct Current (DC) microgrid that is composed of multiple interconnected Distributed Generation Units (DGUs) is considered.
In fact, linear relationship does exist between voltage and current of constant virtual impedances produced by droop control in DC micrigrids, resulting a strong coupling between voltage regulation and current sharing. In this paper, the relationship between these two control objectives is analyzed.
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.
A multi-objective optimization approach based on reinforcement learning and interactive fuzzy programming is proposed to regulate the system voltage, minimize the total power loss, and improve the current sharing error among the distributed generators.
This paper provides a new adaptive control approach for DC microgrid applications that satisfies both accurate current sharing and appropriate voltage regulation depending on the loading state. As the load increases in parallel, so do the output currents of the distributed generating units, and correct current sharing is necessary under severe .
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6 FAQs about [Reasons for microgrid current sharing]
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.
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 ).
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).
What is the control objective of a dc microgrid?
The control objective is guaranteeing voltage stability in the DC microgrid while delivering power to the loads and extracting energy efficiently from renewable sources. To verify grid voltage regulation among a number of devices via current sharing, we use Lyapunov-based Input-to-State Stability (ISS) analysis.
Can distributed secondary control improve dc microgrid performance?
Wang P, Lu X, Yang X et al (2016) An improved distributed secondary control method for DC microgrids with enhanced dynamic current sharing performance. IEEE Trans Power Electron 31 (9):6658–6673
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 ).
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