NDLI: Robust droop control of DC distribution networks

Content Provider	IET Digital Library
Author	Shuai, Zhikang He, Dong Fang, Junbin Shen, Z. John Tu, Chunming Wang, Jun
Abstract	DC droop control strategy is usually used to improve load sharing in increasingly popular DC distribution networks. However, the conventional droop control strategy suffers from considerable terminal voltage drop and influences by line impedance. In this study, the authors propose a new robust droop control strategy to overcome these drawbacks. They first develop a mathematical model of the proposed robust controller and use the load terminal voltage as a feedback signal. They further treat the line impedance as part of the equivalent output impedance of individual power converters and minimise the inaccuracy of load sharing by regulating robust coefficients. They analyse the influence of the robust coefficients on the system stability. They have verified the robust control strategy with both power system computer-aided design/electromagnetic transients including DC simulation and control hardware in the loop semi-experimental method. It is shown that the robust concept improves the load sharing accuracy and suppressing the load voltage fluctuation.
Starting Page	807
Ending Page	814
Page Count	8
ISSN	17521416
Volume Number	10
e-ISSN	17521424
Issue Number	Issue 6, Jul (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/10/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2015.0455
Journal	IET Renewable Power Generation
Publisher Date	2016-07-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System DC Distribution Network Robust Droop Control DC Droop Control Strategy Distribution Network Feedback Feedback Signal Load Sharing Improvement Load Sharing Inaccuracy Minimisation Load Terminal Voltage Load Voltage Fluctuation Suppression Loop Semi-experimental Method Power Converter Power Distribution Control Power Distribution Reliability Power Supplies to Apparatus Power System Computer-aided Design-electromagnetic Transients Power System Stability Reliability Robust Control Terminal Voltage Drop
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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