NDLI: Instantaneous power-based current control scheme for VAR compensation in hybrid AC/DC networks for smart grid applications

Content Provider	IET Digital Library
Author	Shanthi, Pandurangan Govindarajan, Uma Parvathyshankar, Deivasundari
Abstract	An important feature of grid-connected DC microgrids is the ability to inject or suck power from the grid based on the generation and loading conditions. Power flow from the AC to DC grid is important to cover any deficiency in the demand in DC grid. Power flow from the DC to AC grid is needed when there is an excess power from renewable energy sources on the DC bus. To allow this bidirectional power flow, a pulse-width modulation controlled voltage source converter is used as an interface between the DC microgrid and the AC main grid. The bidirectional converter controls the active power transferred in both directions while operating at unity power factor. In this study, a current control approach based on the instantaneous synchronous detection theory has been used to control the power flow in both directions. The proposed current control scheme is verified through MATLAB simulation and the simulated results are also validated experimentally using a prototype controlled by dSPACE digital signal processor. The simulated and the experimental results show that the proposed scheme offers regulated DC grid voltage and nearly unity power factor for wide load variations. Results have proven excellent performance in steady and transient states.
Starting Page	1216
Ending Page	1226
Page Count	11
ISSN	17554535
Volume Number	7
e-ISSN	17554543
Issue Number	Issue 5, May (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/7/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2013.0253
Journal	IET Power Electronics
Publisher Date	2014-01-29
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Bidirectional Power Flow Control Control of Electric Power System Current Control DC-AC Grid Digital Signal Processing Chips Distributed Power Generation Distribution Network DSPACE Digital Signal Processor Electric Current Control Grid-connected DC Microgrid Hybrid AC-DC Grid Network Hybrid Power System Instantaneous Power-based Current Control Scheme Instantaneous Synchronous Detection Theory Load Flow Control MATLAB Simulation Power And Energy Control Power Control Power Converter Power Distribution Control Power Factor Power Supplies to Apparatus Power System Control Power System Transient Pulse-width Modulation Controlled Voltage Source Converter PWM Power Converter Renewable Energy Source Smart Grid Application Smart Power Grid Static VAr Compensators Unity Power Factor VAR Compensation Voltage Regulation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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