NDLI: LCO-FLL control for single-phase utility integrated single-stage solar PV system

Content Provider	IET Digital Library
Author	Pandey, Sunil Kumar Kumar, Shailendra Singh, Bhim
Abstract	This study presents a limit cycle oscillator-frequency locked loop (LCO-FLL) control for single-phase utility integrated single-stage photovoltaic (PV) system. The proposed topology increases the utility of the voltage-source converter (VSC), particularly in the absence of PV generation. It has the potential to load harmonics current mitigation. It estimates harmonic free load current accurately with low computational requirement due to the absence of cumbersome mathematical algorithm and transformation techniques. It provides reactive power compensation, both in the absence and the presence of PV generation, improves transient response during dynamics in load and varying irradiance conditions. The total harmonic distortions of utility current and utility voltage, compliance the limit of the IEEE-519 standard. The proportional–integral (PI) regulator regulates the DC-link voltage of VSC input to the reference DC-link voltage. The incremental conductance-based technique derives the reference DC-link voltage. The dynamic behaviour of the LCO-FLL-based control is improved using a feed-forward loop for the PV power sharing. It also reduces loading on the PI controller. Test results demonstrate satisfactory performance of LCO-FLL-based control.
Starting Page	1941
Ending Page	1948
Page Count	8
ISSN	17521416
Volume Number	12
e-ISSN	17521424
Issue Number	Issue 16, Dec (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/12/16
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2018.5405
Journal	IET Renewable Power Generation
Publisher Date	2018-10-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System Feed-forward Loop Feedforward Frequency Locked Loops Harmonic Distortion Harmonic Free Load Current Estimation Harmonics Harmonics Suppression LCO-FLL Control LCO-FLL-based Control Limit Cycle Oscillator-frequency Locked Loop Load Harmonics Current Mitigation Low Computational Requirement Photovoltaic Power System PI Control PI Controller Power Conversion Harmonics Power Converter Power Generation Control Power Supplies to Apparatus Power Supply Quality Power System Control Proportional–integral Regulator PV Power Sharing Reactive Power Compensation Reference DC-link Voltage Regulation Single-phase Utility Integrated Single-stage Photovoltaic System Single-phase Utility Integrated Single-stage Solar PV System Solar Power Stations Total Harmonic Distortion Transient Response Utility Current Utility Voltage Varying Irradiance Condition Voltage Control Voltage-source Converter
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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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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