NDLI: CC-ROGI-FLL based control for grid-tied photovoltaic system at abnormal grid conditions

Content Provider	IET Digital Library
Author	Kumar, Abhishek Kewat, Seema Singh, Bhim Jain, Rashmi
Abstract	This study presents a single stage grid-interfaced solar photovoltaic (SPV) system using a multifunctional complex coefficient reduced ordered generalised integrator (CC-ROGI) based frequency-locked loop (FLL) control. The main contributions of this study, include (i) the extrication of fundamental active components from load currents using CC-ROGI-FLLbased control to generate the reference grid currents for voltage source converter (VSC) switching, (ii) VSC works as a distribution static compensator, which performs multi-functions like harmonics mitigation, reactive power compensation, unity power factor operation and grid currents balancing, (iii) this CC-ROGI-FLL also extricates the fundamental grid voltages component even under grid voltage harmonic distortion and grid voltages unbalancing. Moreover, SPV power feed-forward component is assimilated in this control to reduce the oscillations in grid currents under variable irradiance. Simulated and experimental results show satisfactory behaviour of the system at different conditions like load unbalancing, variable solar irradiance and abnormal grid conditions. The comparative performance of CC-ROGI-FLL control with other FLL and phaselocked loop controls are shown in this study. This CC-ROGI-FLL control has manifested a good steady state performance and dynamic response. The total harmonic distortions of grid currents are found well within the limits of the IEEE-519 standard, even under abnormal grid conditions.
Starting Page	3400
Ending Page	3411
Page Count	12
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 17, Sep (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/17
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.0765
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-05-22
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Power Generation CC-ROGI-FLL Control Complex Coefficient Reduced Ordered Generalised Integrator Control of Electric Power System Distribution Network Distribution Static Compensator Dynamic Response Frequency Locked Loops Frequency-locked Loop Control Grid Voltage Harmonic Distortion Harmonic Distortion Harmonics IEEE Standards IEEE-519 Standard Load Current Oscillation Other Power Apparatus And Electric Machine Phase Locked Loop Phase-locked Loop Control Photoelectric Conversion Photovoltaic Array Photovoltaic Power System Power Converter Power Distribution Control Power Factor Power Generation Control Power Grid Power Supplies to Apparatus Power Supply Quality Power System Control Power System Harmonics Reactive Power Reactive Power Compensation Single Stage Grid-interfaced Solar Photovoltaic System Sinusoidal Reference Grid Current Solar Cell And Array Solar Cell Array Solar Power Stations SPV Power Feed-forward Component Static VAr Compensators Unity Power Factor Operation Variable Solar Irradiance Voltage Source Converter Switching Voltage-source Converter VSC VSC Switching
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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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