Distributed Power Reserve Control in Grid-Connected Cascaded H-Bridge Converter-Based Photovoltaic Systems

Mina HAGHIGHAT; Hossein Dehghani TAFTI; Mehdi GHOLIPOUR; Mehdi NIROOMAND; Christopher D. TOWNSEND; Nestor Vazquez BARAJAS; Gaowen LIANG; Georgios KONSTANTINOU; Josep POU

doi:10.1109/ACCESS.2024.3496518

Distributed Power Reserve Control in Grid-Connected Cascaded H-Bridge Converter-Based Photovoltaic Systems

Mina HAGHIGHAT, Hossein Dehghani TAFTI^*, Mehdi GHOLIPOUR, Mehdi NIROOMAND, Christopher D. TOWNSEND, Nestor Vazquez BARAJAS, Gaowen LIANG, Georgios KONSTANTINOU , Josep POU

^*Corresponding author for this work

Department of Electrical Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Abstract

Grid-connected photovoltaic (PV) systems enhance grid stability during frequency fluctuations by adopting power reserve control (PRC) and contributing to frequency regulation. The cascaded H-bridge (CHB) converter is a suitable choice for large-scale photovoltaic systems. This paper introduces a distributed PRC strategy designed for CHB-based PV systems, necessitating minimal inter-module communication and thus simplifying implementation. Each submodule (SM) within the CHB converter periodically engages in maximum power point tracking to assess the system’s total accessible PV power. Through coordinated control, the strategy evenly allocates the necessary power across sub-modules based on their PV power availability, offering a balanced power distribution while acknowledging operational constraints on power disparity among SMs. Simulation and experimental results confirm the efficiency of the proposed approach under various conditions, showcasing accurate PV power estimation, seamless transition between operating modes, fast dynamic response, and regulation of the dc-link voltages. © 2024 IEEE.

Original language	English
Pages (from-to)	168568-168580
Journal	IEEE Access
Volume	12
Online published	12 Nov 2024
DOIs	https://doi.org/10.1109/ACCESS.2024.3496518
Publication status	Published - 2024

Research Keywords

Cascaded H-bridge converter
distributed control
flexible power point tracking
photovoltaic systems
power reserve control

Publisher's Copyright Statement

This full text is made available under CC-BY-NC-ND 4.0. https://creativecommons.org/licenses/by-nc-nd/4.0/

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

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title = "Distributed Power Reserve Control in Grid-Connected Cascaded H-Bridge Converter-Based Photovoltaic Systems",

abstract = "Grid-connected photovoltaic (PV) systems enhance grid stability during frequency fluctuations by adopting power reserve control (PRC) and contributing to frequency regulation. The cascaded H-bridge (CHB) converter is a suitable choice for large-scale photovoltaic systems. This paper introduces a distributed PRC strategy designed for CHB-based PV systems, necessitating minimal inter-module communication and thus simplifying implementation. Each submodule (SM) within the CHB converter periodically engages in maximum power point tracking to assess the system{\textquoteright}s total accessible PV power. Through coordinated control, the strategy evenly allocates the necessary power across sub-modules based on their PV power availability, offering a balanced power distribution while acknowledging operational constraints on power disparity among SMs. Simulation and experimental results confirm the efficiency of the proposed approach under various conditions, showcasing accurate PV power estimation, seamless transition between operating modes, fast dynamic response, and regulation of the dc-link voltages. {\textcopyright} 2024 IEEE.",

keywords = "Cascaded H-bridge converter, distributed control, flexible power point tracking, photovoltaic systems, power reserve control",

author = "Mina HAGHIGHAT and TAFTI, {Hossein Dehghani} and Mehdi GHOLIPOUR and Mehdi NIROOMAND and TOWNSEND, {Christopher D.} and BARAJAS, {Nestor Vazquez} and Gaowen LIANG and Georgios KONSTANTINOU and Josep POU",

year = "2024",

doi = "10.1109/ACCESS.2024.3496518",

language = "English",

volume = "12",

pages = "168568--168580",

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TY - JOUR

T1 - Distributed Power Reserve Control in Grid-Connected Cascaded H-Bridge Converter-Based Photovoltaic Systems

AU - HAGHIGHAT, Mina

AU - TAFTI, Hossein Dehghani

AU - GHOLIPOUR, Mehdi

AU - NIROOMAND, Mehdi

AU - TOWNSEND, Christopher D.

AU - BARAJAS, Nestor Vazquez

AU - LIANG, Gaowen

AU - KONSTANTINOU , Georgios

AU - POU, Josep

PY - 2024

Y1 - 2024

N2 - Grid-connected photovoltaic (PV) systems enhance grid stability during frequency fluctuations by adopting power reserve control (PRC) and contributing to frequency regulation. The cascaded H-bridge (CHB) converter is a suitable choice for large-scale photovoltaic systems. This paper introduces a distributed PRC strategy designed for CHB-based PV systems, necessitating minimal inter-module communication and thus simplifying implementation. Each submodule (SM) within the CHB converter periodically engages in maximum power point tracking to assess the system’s total accessible PV power. Through coordinated control, the strategy evenly allocates the necessary power across sub-modules based on their PV power availability, offering a balanced power distribution while acknowledging operational constraints on power disparity among SMs. Simulation and experimental results confirm the efficiency of the proposed approach under various conditions, showcasing accurate PV power estimation, seamless transition between operating modes, fast dynamic response, and regulation of the dc-link voltages. © 2024 IEEE.

AB - Grid-connected photovoltaic (PV) systems enhance grid stability during frequency fluctuations by adopting power reserve control (PRC) and contributing to frequency regulation. The cascaded H-bridge (CHB) converter is a suitable choice for large-scale photovoltaic systems. This paper introduces a distributed PRC strategy designed for CHB-based PV systems, necessitating minimal inter-module communication and thus simplifying implementation. Each submodule (SM) within the CHB converter periodically engages in maximum power point tracking to assess the system’s total accessible PV power. Through coordinated control, the strategy evenly allocates the necessary power across sub-modules based on their PV power availability, offering a balanced power distribution while acknowledging operational constraints on power disparity among SMs. Simulation and experimental results confirm the efficiency of the proposed approach under various conditions, showcasing accurate PV power estimation, seamless transition between operating modes, fast dynamic response, and regulation of the dc-link voltages. © 2024 IEEE.

KW - Cascaded H-bridge converter

KW - distributed control

KW - flexible power point tracking

KW - photovoltaic systems

KW - power reserve control

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U2 - 10.1109/ACCESS.2024.3496518

DO - 10.1109/ACCESS.2024.3496518

M3 - RGC 21 - Publication in refereed journal

SN - 2169-3536

VL - 12

SP - 168568

EP - 168580

JO - IEEE Access

JF - IEEE Access

ER -

Distributed Power Reserve Control in Grid-Connected Cascaded H-Bridge Converter-Based Photovoltaic Systems

Abstract

Research Keywords

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