On Secondary Control Approaches for Voltage Regulation in DC Microgrids

Peyghami, Saeed; Mokhtari, Hossein; Davari, Pooya; Loh, Pon Chiang; Blaabjerg, Frede

doi:10.1109/tia.2017.2704908

Cited by 49 publications

(21 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, both control levels vary on certain aspects such as the speed of the response, operational scheduling and the framework requirements. One of the major drawbacks of droop control at the primary level is voltage drop and poor current sharing among converters, whenever line impedance is taken into account [51]. The secondary level controller helps to overcome the aforementioned problems.…”

Section: Secondary Control Schemementioning

confidence: 99%

Review of hierarchical control strategies for DC microgrid

Abhishek

Ranjan

Devassy

et al. 2020

IET Renewable Power Generation

104

View full text Add to dashboard Cite

This work presents an extensive review of hierarchical control strategies that provide effective and robust control for a DC microgrid. DC microgrid is an efficient, scalable and reliable solution for electrification in remote areas and needs a reliable control scheme such as hierarchical control. The hierarchical control strategy is divided into three layers namely primary, secondary and tertiary based on their functionality. In this study, different methods of primary control for current and voltage regulation, secondary control for error-correction in voltage and current, power sharing in a microgrid and microgrid clusters and tertiary control for power and energy management with a primary focus on minimal power loss and operational cost in a DC microgrid system are reviewed in-depth. Along with this, the advantages and limitations of various control structures like centralised, decentralised, distributed are discussed in this study. After a comparative study of all control strategies, the optimum control schemes from the author's point of view are also presented.

show abstract

Section: Secondary Control Schemementioning

confidence: 99%

Review of hierarchical control strategies for DC microgrid

Abhishek

Ranjan

Devassy

et al. 2020

IET Renewable Power Generation

104

View full text Add to dashboard Cite

show abstract

“…Secondary control is implemented via a voltage PI control to eliminate the voltage deviation owing to voltage droop. Reference [47] shows an application of centralized secondary control in DC/DC converters based DC MG. Reference [48] presents a DC-bus signalling secondary control for islanded DC MGs.…”

Section: Centralized Secondary Controlmentioning

confidence: 99%

Primary and secondary control in DC microgrids: a review

Gao

Kang²,

Cao

et al. 2018

J. Mod. Power Syst. Clean Energy

175

View full text Add to dashboard Cite

With the rapid development of power electronics technology, microgrid (MG) concept has been widely accepted in the field of electrical engineering. Due to the advantages of direct current (DC) distribution systems such as reduced losses and easy integration with energy storage resources, DC MGs have drawn increasing attentions nowadays. With the increase of distributed generation, a DC MG consisting of multiple sources is a hot research topic. The challenge in such a multi-source DC MG is to provide voltage support and good power sharing performance. As the control strategy plays an important role in ensuring MG's power quality and efficiency, a comprehensive review of the state-of-art control approaches in DC MGs is necessary. This paper provides an overview of the primary and secondary control methods under the hierarchical control architecture for DC MGs. Specifically, inner loop and droop control approaches in primary control are reviewed. Centralized, distributed, and decentralized approach based secondary control is discussed in details. Key findings and future trends are also presented at last.

show abstract

“…Therefore, these control strategies are more suitable for application in some of the emerging DC microgrids that do not have compact configurations [5][6][7]. The non-communication based category includes: (i) conventional droop control [15,16], (ii) improved droop control [17][18][19], and (iii) DC bus signalling (DBS) [20][21][22][23][24][25][26][27][28][29][30] strategies.…”

Section: Introductionmentioning

confidence: 99%

Versatile decentralised control of the DC microgrid

Mohammadi

Ajaei

2019

IET Smart Grid

View full text Add to dashboard Cite

This study proposes a versatile decentralised control strategy for the direct current (DCΨ microgrid based on the DC bus signalling method. Performance of the proposed control strategy is investigated under various generation and load disturbances in both grid-connected and islanded operation modes of the DC microgrid. The studies are conducted using a realistic DC microgrid study system simulated in the PSCAD/EMTDC software. The study results indicate that the proposed control strategy: (iΨ effectively maintains the power balance in the DC microgrid, (iiΨ effectively limits the DC bus voltage deviations under large disturbances, (iiiΨ improves stability and dynamic response, (ivΨ does not curtail renewable power generation unless it is necessary, (vΨ does not require excessively large grid-tied converter and battery energy storage systems, and (viΨ enhances system reliability, flexibility, modularity, and expandability.

show abstract

On Secondary Control Approaches for Voltage Regulation in DC Microgrids

Abstract: Abstract-Centralized

Cited by 49 publications

References 26 publications

Review of hierarchical control strategies for DC microgrid

Review of hierarchical control strategies for DC microgrid

Primary and secondary control in DC microgrids: a review

Versatile decentralised control of the DC microgrid

Contact Info

Product

Resources

About