NDLI: Decentralised voltage balancing in bipolar dc microgrids equipped with trans-z-source interlinking converter

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Decentralised voltage balancing in bipolar dc microgrids equipped with trans-z-source interlinking converter

Content Provider	IET Digital Library
Author	Tavakoli, Saman Dadjo Khajesalehi, Jasem Hamzeh, Mohsen Sheshyekani, Keyhan
Abstract	This study presents an improved version of bipolar dc microgrids in which a distributed voltage-balancing strategy supplants the central voltage balancer. The improved bipolar dc microgrid is interlinked to the ac grid using a trans-z-source inverter for which a new voltage control system is adopted. The shoot-through duty cycle, d-axis current reference, and voltages of dc-side capacitors are controlled by the proposed voltage control system. A bipolar, bidirectional dc/dc boost converter is designed to fulfil the voltage regulation and voltage-balancing functions in case the trans-z-source inverter is disconnected from the ac grid. A power-sharing scheme is also proposed in which two droop gains are employed to modify voltage control loops of each converter. Simulations are done for a bipolar dc microgrid involving a trans-z-source interlinking converter while local distributed generations (DGs) are interfaced to the microgrid by bipolar boost converters.
Starting Page	703
Ending Page	712
Page Count	10
ISSN	17521416
Volume Number	10
e-ISSN	17521424
Issue Number	Issue 5, May (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/10/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2015.0222
Journal	IET Renewable Power Generation
Publisher Date	2016-05-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	AC Grid Bipolar Bidirectional DC-DC Boost Converter Design Bipolar DC Microgrid Central Voltage Balancer Control of Electric Power System Current Control D-axis Current Reference DC-DC Power Converter DC-side Capacitor Voltage Decentralised Control Decentralised Voltage Balancing Distributed Control Distributed Power Generation Distributed Voltage-balancing Strategy Droop Gain Electric Current Control Invertors Multivariable Control System Power Generation Control Power Grid Power System Control Shoot-through Duty Cycle Trans-z-source Inverter Interlinking Converter Voltage Control Voltage Control System Voltage Regulation
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

Sl.	Authority	Responsibilities	Communication Details
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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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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