Eliminating DC-Link Oscillations in Dynamic Power Reserve Control Through Interleaved Photovoltaic Strings

Aditi Narang; Glen G. Farivar; Ezequiel Rodriguez; Hossein Dehghani Tafti; Christopher D. Townsend; Josep Pou

doi:10.1109/IECON51785.2023.10311734

Eliminating DC-Link Oscillations in Dynamic Power Reserve Control Through Interleaved Photovoltaic Strings

Aditi Narang, Glen G. Farivar, Ezequiel Rodriguez, Hossein Dehghani Tafti, Christopher D. Townsend, Josep Pou

Rolls-Royce@NTU Corporate Lab

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Advanced reserve power point tracking (RPPT) algorithms are becoming popular and are expected to replace the conventional maximum power point tracking (MPPT) and flexible power point tracking (FPPT) algorithms. RPPT enables power reserve availability while injecting flexible power into the grid. Hence, it combines the MPPT and FPPT functionalities simultaneously. However, due to inherent continuous sweeping across the PV curve, RPPT suffers from high dc-link voltage fluctuations. For this reason, this paper extends the RPPT concept from the single-string photovoltaic (PV) system to the multi-string PV system. Specifically, a two-string PV system is proposed, where two PV strings that are interleaved at the dc-link. This approach offers advantages over using a single PV string of the same capacity, notably by reducing the ripple in the dc-link voltage caused by RPPT. The effectiveness of this proposed algorithm in the interleaved PV system is demonstrated through simulation results under varying grid frequency and irradiance conditions.

Original language	English
Title of host publication	IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society
Publisher	IEEE Computer Society
ISBN (Electronic)	9798350331820
DOIs	https://doi.org/10.1109/IECON51785.2023.10311734
Publication status	Published - 2023
Event	49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023 - Singapore, Singapore Duration: Oct 16 2023 → Oct 19 2023

Publication series

Name	IECON Proceedings (Industrial Electronics Conference)
ISSN (Print)	2162-4704
ISSN (Electronic)	2577-1647

Conference

Conference	49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023
Country/Territory	Singapore
City	Singapore
Period	10/16/23 → 10/19/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

ASJC Scopus Subject Areas

Control and Systems Engineering
Electrical and Electronic Engineering

Keywords

Dynamic reserve power point tracking (RPPT)
grid support
maximum power point tracking (MPPT)
photovoltaic (PV) power plants
power reserve control

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/IECON51785.2023.10311734

Cite this

Narang, A., Farivar, G. G., Rodriguez, E., Tafti, H. D., Townsend, C. D., & Pou, J. (2023). Eliminating DC-Link Oscillations in Dynamic Power Reserve Control Through Interleaved Photovoltaic Strings. In IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society (IECON Proceedings (Industrial Electronics Conference)). IEEE Computer Society. https://doi.org/10.1109/IECON51785.2023.10311734

@inproceedings{81d48b0981bc407abb911453fa8907e1,

title = "Eliminating DC-Link Oscillations in Dynamic Power Reserve Control Through Interleaved Photovoltaic Strings",

abstract = "Advanced reserve power point tracking (RPPT) algorithms are becoming popular and are expected to replace the conventional maximum power point tracking (MPPT) and flexible power point tracking (FPPT) algorithms. RPPT enables power reserve availability while injecting flexible power into the grid. Hence, it combines the MPPT and FPPT functionalities simultaneously. However, due to inherent continuous sweeping across the PV curve, RPPT suffers from high dc-link voltage fluctuations. For this reason, this paper extends the RPPT concept from the single-string photovoltaic (PV) system to the multi-string PV system. Specifically, a two-string PV system is proposed, where two PV strings that are interleaved at the dc-link. This approach offers advantages over using a single PV string of the same capacity, notably by reducing the ripple in the dc-link voltage caused by RPPT. The effectiveness of this proposed algorithm in the interleaved PV system is demonstrated through simulation results under varying grid frequency and irradiance conditions.",

keywords = "Dynamic reserve power point tracking (RPPT), grid support, maximum power point tracking (MPPT), photovoltaic (PV) power plants, power reserve control",

author = "Aditi Narang and Farivar, {Glen G.} and Ezequiel Rodriguez and Tafti, {Hossein Dehghani} and Townsend, {Christopher D.} and Josep Pou",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023 ; Conference date: 16-10-2023 Through 19-10-2023",

year = "2023",

doi = "10.1109/IECON51785.2023.10311734",

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Narang, A, Farivar, GG, Rodriguez, E, Tafti, HD, Townsend, CD & Pou, J 2023, Eliminating DC-Link Oscillations in Dynamic Power Reserve Control Through Interleaved Photovoltaic Strings. in IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society. IECON Proceedings (Industrial Electronics Conference), IEEE Computer Society, 49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023, Singapore, Singapore, 10/16/23. https://doi.org/10.1109/IECON51785.2023.10311734

Eliminating DC-Link Oscillations in Dynamic Power Reserve Control Through Interleaved Photovoltaic Strings. / Narang, Aditi; Farivar, Glen G.; Rodriguez, Ezequiel et al.
IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society. IEEE Computer Society, 2023. (IECON Proceedings (Industrial Electronics Conference)).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - Eliminating DC-Link Oscillations in Dynamic Power Reserve Control Through Interleaved Photovoltaic Strings

AU - Narang, Aditi

AU - Farivar, Glen G.

AU - Rodriguez, Ezequiel

AU - Tafti, Hossein Dehghani

AU - Townsend, Christopher D.

AU - Pou, Josep

PY - 2023

Y1 - 2023

N2 - Advanced reserve power point tracking (RPPT) algorithms are becoming popular and are expected to replace the conventional maximum power point tracking (MPPT) and flexible power point tracking (FPPT) algorithms. RPPT enables power reserve availability while injecting flexible power into the grid. Hence, it combines the MPPT and FPPT functionalities simultaneously. However, due to inherent continuous sweeping across the PV curve, RPPT suffers from high dc-link voltage fluctuations. For this reason, this paper extends the RPPT concept from the single-string photovoltaic (PV) system to the multi-string PV system. Specifically, a two-string PV system is proposed, where two PV strings that are interleaved at the dc-link. This approach offers advantages over using a single PV string of the same capacity, notably by reducing the ripple in the dc-link voltage caused by RPPT. The effectiveness of this proposed algorithm in the interleaved PV system is demonstrated through simulation results under varying grid frequency and irradiance conditions.

AB - Advanced reserve power point tracking (RPPT) algorithms are becoming popular and are expected to replace the conventional maximum power point tracking (MPPT) and flexible power point tracking (FPPT) algorithms. RPPT enables power reserve availability while injecting flexible power into the grid. Hence, it combines the MPPT and FPPT functionalities simultaneously. However, due to inherent continuous sweeping across the PV curve, RPPT suffers from high dc-link voltage fluctuations. For this reason, this paper extends the RPPT concept from the single-string photovoltaic (PV) system to the multi-string PV system. Specifically, a two-string PV system is proposed, where two PV strings that are interleaved at the dc-link. This approach offers advantages over using a single PV string of the same capacity, notably by reducing the ripple in the dc-link voltage caused by RPPT. The effectiveness of this proposed algorithm in the interleaved PV system is demonstrated through simulation results under varying grid frequency and irradiance conditions.

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T3 - IECON Proceedings (Industrial Electronics Conference)

BT - IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society

PB - IEEE Computer Society

T2 - 49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023

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Narang A, Farivar GG, Rodriguez E, Tafti HD, Townsend CD, Pou J. Eliminating DC-Link Oscillations in Dynamic Power Reserve Control Through Interleaved Photovoltaic Strings. In IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society. IEEE Computer Society. 2023. (IECON Proceedings (Industrial Electronics Conference)). doi: 10.1109/IECON51785.2023.10311734

Eliminating DC-Link Oscillations in Dynamic Power Reserve Control Through Interleaved Photovoltaic Strings

Abstract

Publication series

Conference

Bibliographical note

ASJC Scopus Subject Areas

Keywords

UN SDGs

Access to Document

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Cite this