No Cover Image

Journal article 32 views 3 downloads

Enhanced Andronov–Hopf Oscillator Grid-Forming Inverters with Voltage-Independent Active-Power Droop Coefficient

HAMED REZAZADEH, Mohammad Monfared Orcid Logo, Meghdad Fazeli Orcid Logo, Saeed Golestan

IEEE Journal of Emerging and Selected Topics in Power Electronics, Pages: 1 - 1

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

  • 71871.AAM.pdf

    PDF | Accepted Manuscript

    Author accepted manuscript document released under the terms of a Creative Commons CC-BY licence using the Swansea University Research Publications Policy (rights retention).

    Download (1.75MB)

Check full text

DOI (Published version): 10.1109/jestpe.2026.3689646

Abstract

Virtual oscillator control (VOC), particularly the Andronov–Hopf oscillator (AHO), has emerged as a promising grid-forming (GFM) strategy due to its fast transient response and inherent synchronisation capability. However, in conventional AHO-based inverters, the active power droop coefficient is in...

Full description

Published in: IEEE Journal of Emerging and Selected Topics in Power Electronics
ISSN: 2168-6777 2168-6785
Published: Institute of Electrical and Electronics Engineers (IEEE) 2026
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa71871
first_indexed 2026-05-08T16:01:43Z
last_indexed 2026-06-05T10:51:36Z
id cronfa71871
recordtype SURis
fullrecord <?xml version="1.0"?><rfc1807><datestamp>2026-06-04T16:27:53.0333657</datestamp><bib-version>v2</bib-version><id>71871</id><entry>2026-05-08</entry><title>Enhanced Andronov&#x2013;Hopf Oscillator Grid-Forming Inverters with Voltage-Independent Active-Power Droop Coefficient</title><swanseaauthors><author><sid>4c4dac47e9fc50d1eceab6e53ef0bbb4</sid><ORCID/><firstname>HAMED</firstname><surname>REZAZADEH</surname><name>HAMED REZAZADEH</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>adab4560ff08c8e5181ff3f12a4c36fb</sid><ORCID>0000-0002-8987-0883</ORCID><firstname>Mohammad</firstname><surname>Monfared</surname><name>Mohammad Monfared</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>b7aae4026707ed626d812d07018a2113</sid><ORCID>0000-0003-1448-5339</ORCID><firstname>Meghdad</firstname><surname>Fazeli</surname><name>Meghdad Fazeli</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2026-05-08</date><deptcode>BGPS</deptcode><abstract>Virtual oscillator control (VOC), particularly the Andronov&#x2013;Hopf oscillator (AHO), has emerged as a promising grid-forming (GFM) strategy due to its fast transient response and inherent synchronisation capability. However, in conventional AHO-based inverters, the active power droop coefficient is inherently dependent on the voltage amplitude, which degrades frequency support under grid disturbances and leads to power-sharing inaccuracies. This paper proposes an enhanced AHO (EAHO) control strategy that achieves a voltage-independent active power droop coefficient while preserving the original AHO structure and its favourable dynamic characteristics. The proposed modification enhances frequency and voltage support, improves active and reactive power support, ensures accurate power sharing in stand-alone parallel operation with other GFM inverters, and enhances stability under severe grid voltage sags. Large-signal and small-signal analysis, as well as comprehensive experimental validation on 2.5 kVA single-phase inverters, confirm the superior steady-state performance, improved grid-support capability, and robust stability of the proposed EAHO under wide-ranging grid conditions.</abstract><type>Journal Article</type><journal>IEEE Journal of Emerging and Selected Topics in Power Electronics</journal><volume>0</volume><journalNumber/><paginationStart>1</paginationStart><paginationEnd>1</paginationEnd><publisher>Institute of Electrical and Electronics Engineers (IEEE)</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>2168-6777</issnPrint><issnElectronic>2168-6785</issnElectronic><keywords/><publishedDay>1</publishedDay><publishedMonth>5</publishedMonth><publishedYear>2026</publishedYear><publishedDate>2026-05-01</publishedDate><doi>10.1109/jestpe.2026.3689646</doi><url/><notes/><college>COLLEGE NANME</college><department>Biosciences Geography and Physics School</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>BGPS</DepartmentCode><institution>Swansea University</institution><apcterm>Other</apcterm><funders/><projectreference/><lastEdited>2026-06-04T16:27:53.0333657</lastEdited><Created>2026-05-08T11:36:48.5930862</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering</level></path><authors><author><firstname>HAMED</firstname><surname>REZAZADEH</surname><orcid/><order>1</order></author><author><firstname>Mohammad</firstname><surname>Monfared</surname><orcid>0000-0002-8987-0883</orcid><order>2</order></author><author><firstname>Meghdad</firstname><surname>Fazeli</surname><orcid>0000-0003-1448-5339</orcid><order>3</order></author><author><firstname>Saeed</firstname><surname>Golestan</surname><order>4</order></author></authors><documents><document><filename>71871__36865__9f64f4b6ceff47819194c3349689e031.pdf</filename><originalFilename>71871.AAM.pdf</originalFilename><uploaded>2026-06-04T16:23:11.8038276</uploaded><type>Output</type><contentLength>1830850</contentLength><contentType>application/pdf</contentType><version>Accepted Manuscript</version><cronfaStatus>true</cronfaStatus><documentNotes>Author accepted manuscript document released under the terms of a Creative Commons CC-BY licence using the Swansea University Research Publications Policy (rights retention).</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language><licence>https://creativecommons.org/licenses/by/4.0/deed.en</licence></document></documents><OutputDurs/></rfc1807>
spelling 2026-06-04T16:27:53.0333657 v2 71871 2026-05-08 Enhanced Andronov–Hopf Oscillator Grid-Forming Inverters with Voltage-Independent Active-Power Droop Coefficient 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 2026-05-08 BGPS Virtual oscillator control (VOC), particularly the Andronov–Hopf oscillator (AHO), has emerged as a promising grid-forming (GFM) strategy due to its fast transient response and inherent synchronisation capability. However, in conventional AHO-based inverters, the active power droop coefficient is inherently dependent on the voltage amplitude, which degrades frequency support under grid disturbances and leads to power-sharing inaccuracies. This paper proposes an enhanced AHO (EAHO) control strategy that achieves a voltage-independent active power droop coefficient while preserving the original AHO structure and its favourable dynamic characteristics. The proposed modification enhances frequency and voltage support, improves active and reactive power support, ensures accurate power sharing in stand-alone parallel operation with other GFM inverters, and enhances stability under severe grid voltage sags. Large-signal and small-signal analysis, as well as comprehensive experimental validation on 2.5 kVA single-phase inverters, confirm the superior steady-state performance, improved grid-support capability, and robust stability of the proposed EAHO under wide-ranging grid conditions. Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics 0 1 1 Institute of Electrical and Electronics Engineers (IEEE) 2168-6777 2168-6785 1 5 2026 2026-05-01 10.1109/jestpe.2026.3689646 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Other 2026-06-04T16:27:53.0333657 2026-05-08T11:36:48.5930862 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 71871__36865__9f64f4b6ceff47819194c3349689e031.pdf 71871.AAM.pdf 2026-06-04T16:23:11.8038276 Output 1830850 application/pdf Accepted Manuscript true Author accepted manuscript document released under the terms of a Creative Commons CC-BY licence using the Swansea University Research Publications Policy (rights retention). true eng https://creativecommons.org/licenses/by/4.0/deed.en
title Enhanced Andronov–Hopf Oscillator Grid-Forming Inverters with Voltage-Independent Active-Power Droop Coefficient
spellingShingle Enhanced Andronov–Hopf Oscillator Grid-Forming Inverters with Voltage-Independent Active-Power Droop Coefficient
HAMED REZAZADEH
Mohammad Monfared
Meghdad Fazeli
title_short Enhanced Andronov–Hopf Oscillator Grid-Forming Inverters with Voltage-Independent Active-Power Droop Coefficient
title_full Enhanced Andronov–Hopf Oscillator Grid-Forming Inverters with Voltage-Independent Active-Power Droop Coefficient
title_fullStr Enhanced Andronov–Hopf Oscillator Grid-Forming Inverters with Voltage-Independent Active-Power Droop Coefficient
title_full_unstemmed Enhanced Andronov–Hopf Oscillator Grid-Forming Inverters with Voltage-Independent Active-Power Droop Coefficient
title_sort Enhanced Andronov–Hopf Oscillator Grid-Forming Inverters with Voltage-Independent Active-Power Droop Coefficient
author_id_str_mv 4c4dac47e9fc50d1eceab6e53ef0bbb4
adab4560ff08c8e5181ff3f12a4c36fb
b7aae4026707ed626d812d07018a2113
author_id_fullname_str_mv 4c4dac47e9fc50d1eceab6e53ef0bbb4_***_HAMED REZAZADEH
adab4560ff08c8e5181ff3f12a4c36fb_***_Mohammad Monfared
b7aae4026707ed626d812d07018a2113_***_Meghdad Fazeli
author HAMED REZAZADEH
Mohammad Monfared
Meghdad Fazeli
author2 HAMED REZAZADEH
Mohammad Monfared
Meghdad Fazeli
Saeed Golestan
format Journal article
container_title IEEE Journal of Emerging and Selected Topics in Power Electronics
container_volume 0
container_start_page 1
publishDate 2026
institution Swansea University
issn 2168-6777
2168-6785
doi_str_mv 10.1109/jestpe.2026.3689646
publisher Institute of Electrical and Electronics Engineers (IEEE)
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering
document_store_str 1
active_str 0
description Virtual oscillator control (VOC), particularly the Andronov–Hopf oscillator (AHO), has emerged as a promising grid-forming (GFM) strategy due to its fast transient response and inherent synchronisation capability. However, in conventional AHO-based inverters, the active power droop coefficient is inherently dependent on the voltage amplitude, which degrades frequency support under grid disturbances and leads to power-sharing inaccuracies. This paper proposes an enhanced AHO (EAHO) control strategy that achieves a voltage-independent active power droop coefficient while preserving the original AHO structure and its favourable dynamic characteristics. The proposed modification enhances frequency and voltage support, improves active and reactive power support, ensures accurate power sharing in stand-alone parallel operation with other GFM inverters, and enhances stability under severe grid voltage sags. Large-signal and small-signal analysis, as well as comprehensive experimental validation on 2.5 kVA single-phase inverters, confirm the superior steady-state performance, improved grid-support capability, and robust stability of the proposed EAHO under wide-ranging grid conditions.
published_date 2026-05-01T11:51:36Z
_version_ 1867153876633780224
score 11.107897

Similar Items