Enhancing Damping in Single-Phase Grid-Forming Virtual Oscillator Control Inverters: A Feedforward Strategy

REZAZADEH, HAMED; Monfared, Mohammad; Fazeli, Meghdad; Golestan, Saeed

doi:10.1109/ojies.2025.3588677

Journal article 277 views 182 downloads

Enhancing Damping in Single-Phase Grid-Forming Virtual Oscillator Control Inverters: A Feedforward Strategy

HAMED REZAZADEH, Mohammad Monfared

, Meghdad Fazeli

, Saeed Golestan

IEEE Open Journal of the Industrial Electronics Society, Volume: 6, Pages: 1101 - 1115

Swansea University Authors: HAMED REZAZADEH, Mohammad Monfared , Meghdad Fazeli

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DOI (Published version): 10.1109/ojies.2025.3588677

Abstract

The expansion of residential distributed generation systems relies heavily on single-phase inverters for grid integration. However, these inverter-based resources compromise grid stability, mainly due to a lack of inertia and grid strength. To address these issues, grid-forming inverters have been d...

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Published in:	IEEE Open Journal of the Industrial Electronics Society
ISSN:	2644-1284
Published:	Institute of Electrical and Electronics Engineers (IEEE) 2025
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa70038

first_indexed	2025-07-25T10:11:49Z
last_indexed	2025-08-19T22:12:53Z
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spelling	2025-08-18T16:10:43.7721064 v2 70038 2025-07-25 Enhancing Damping in Single-Phase Grid-Forming Virtual Oscillator Control Inverters: A Feedforward Strategy 4c4dac47e9fc50d1eceab6e53ef0bbb4 HAMED REZAZADEH HAMED REZAZADEH true false adab4560ff08c8e5181ff3f12a4c36fb 0000-0002-8987-0883 Mohammad Monfared Mohammad Monfared true false b7aae4026707ed626d812d07018a2113 0000-0003-1448-5339 Meghdad Fazeli Meghdad Fazeli true false 2025-07-25 BGPS The expansion of residential distributed generation systems relies heavily on single-phase inverters for grid integration. However, these inverter-based resources compromise grid stability, mainly due to a lack of inertia and grid strength. To address these issues, grid-forming inverters have been developed, with virtual oscillator control (VOC) emerging as a promising approach due to its superior dynamic performance. However, basic VOC-based inverters cannot provide inertial functionality. Attempts to incorporate virtual inertia into VOCs have significantly reduced the damping factor and led to severe dynamic oscillations. This paper presents a novel technique to improve the dynamic response of single-phase VOC-based inverters by enhancing damping without affecting the virtual inertia and droop functionalities. The effectiveness of the proposed approach is validated through small-signal analysis and extensive experimental testing on a 2.5 kVA single-phase inverter. The results confirm the small-signal model with well-damped dynamic responses in gridconnected mode, without degrading system inertia during stand-alone operation. Journal Article IEEE Open Journal of the Industrial Electronics Society 6 1101 1115 Institute of Electrical and Electronics Engineers (IEEE) 2644-1284 30 7 2025 2025-07-30 10.1109/ojies.2025.3588677 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Not Required 2025-08-18T16:10:43.7721064 2025-07-25T11:00:05.3841561 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering HAMED REZAZADEH 1 Mohammad Monfared 0000-0002-8987-0883 2 Meghdad Fazeli 0000-0003-1448-5339 3 Saeed Golestan 4 70038__34966__51fd9ecdfa7a4ccc9ecdbf201ce6a925.pdf 70038.VoR.pdf 2025-08-18T16:05:25.7288071 Output 6245981 application/pdf Version of Record true © 2025 The Authors. This work is licensed under a Creative Commons Attribution 4.0 License. true eng https://creativecommons.org/licenses/by/4.0/
title	Enhancing Damping in Single-Phase Grid-Forming Virtual Oscillator Control Inverters: A Feedforward Strategy
spellingShingle	Enhancing Damping in Single-Phase Grid-Forming Virtual Oscillator Control Inverters: A Feedforward Strategy HAMED REZAZADEH Mohammad Monfared Meghdad Fazeli
title_short	Enhancing Damping in Single-Phase Grid-Forming Virtual Oscillator Control Inverters: A Feedforward Strategy
title_full	Enhancing Damping in Single-Phase Grid-Forming Virtual Oscillator Control Inverters: A Feedforward Strategy
title_fullStr	Enhancing Damping in Single-Phase Grid-Forming Virtual Oscillator Control Inverters: A Feedforward Strategy
title_full_unstemmed	Enhancing Damping in Single-Phase Grid-Forming Virtual Oscillator Control Inverters: A Feedforward Strategy
title_sort	Enhancing Damping in Single-Phase Grid-Forming Virtual Oscillator Control Inverters: A Feedforward Strategy
author_id_str_mv	4c4dac47e9fc50d1eceab6e53ef0bbb4 adab4560ff08c8e5181ff3f12a4c36fb b7aae4026707ed626d812d07018a2113
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author	HAMED REZAZADEH Mohammad Monfared Meghdad Fazeli
author2	HAMED REZAZADEH Mohammad Monfared Meghdad Fazeli Saeed Golestan
format	Journal article
container_title	IEEE Open Journal of the Industrial Electronics Society
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container_start_page	1101
publishDate	2025
institution	Swansea University
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doi_str_mv	10.1109/ojies.2025.3588677
publisher	Institute of Electrical and Electronics Engineers (IEEE)
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description	The expansion of residential distributed generation systems relies heavily on single-phase inverters for grid integration. However, these inverter-based resources compromise grid stability, mainly due to a lack of inertia and grid strength. To address these issues, grid-forming inverters have been developed, with virtual oscillator control (VOC) emerging as a promising approach due to its superior dynamic performance. However, basic VOC-based inverters cannot provide inertial functionality. Attempts to incorporate virtual inertia into VOCs have significantly reduced the damping factor and led to severe dynamic oscillations. This paper presents a novel technique to improve the dynamic response of single-phase VOC-based inverters by enhancing damping without affecting the virtual inertia and droop functionalities. The effectiveness of the proposed approach is validated through small-signal analysis and extensive experimental testing on a 2.5 kVA single-phase inverter. The results confirm the small-signal model with well-damped dynamic responses in gridconnected mode, without degrading system inertia during stand-alone operation.
published_date	2025-07-30T05:29:48Z
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Enhancing Damping in Single-Phase Grid-Forming Virtual Oscillator Control Inverters: A Feedforward Strategy

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