Loading…

Small-Signal Modeling and Stability Prediction of Parallel Droop-Controlled Inverters Based on Terminal Characteristics of Individual Inverters

Parallel droop-controlled inverters with renewable energy sources are widely employed in islanded ac microgrids, where dynamic interactions among them may cause small-signal stability issues. Since the active power-frequency droop scheme is applied, the dynamic interactions among inverters exist not...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on power electronics 2020-01, Vol.35 (1), p.1045-1063
Main Authors: Wang, Shike, Liu, Zeng, Liu, Jinjun, Boroyevich, Dushan, Burgos, Rolando
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by cdi_FETCH-LOGICAL-c384t-b0dc90d644fdf80b042984dd029c3ab72bfb1415e0239c65cd671f1ec4a4eccf3
cites cdi_FETCH-LOGICAL-c384t-b0dc90d644fdf80b042984dd029c3ab72bfb1415e0239c65cd671f1ec4a4eccf3
container_end_page 1063
container_issue 1
container_start_page 1045
container_title IEEE transactions on power electronics
container_volume 35
creator Wang, Shike
Liu, Zeng
Liu, Jinjun
Boroyevich, Dushan
Burgos, Rolando
description Parallel droop-controlled inverters with renewable energy sources are widely employed in islanded ac microgrids, where dynamic interactions among them may cause small-signal stability issues. Since the active power-frequency droop scheme is applied, the dynamic interactions among inverters exist not only in bus voltage and transmitted current, but also in variable system fundamental frequency. This paper introduces a novel small-signal terminal characteristic model for droop-controlled inverter. Besides conventional impedance and admittance, a new set of terminal characteristics is proposed to characterize the dynamics of fundamental frequency. Furthermore, the small-signal model of parallel inverters is constructed based on the terminal characteristics of individual inverters. Covering the fundamental frequency interactions, a stability prediction approach based on generalized Nyquist criterion is proposed for parallel droop-controlled inverters. Besides the product of impedance and admittance, an additional term is added in the system return ratio, which consists of the proposed terminal characteristics associated with the fundamental frequency. Finally, experimental results validate the effectiveness of this proposed stability prediction approach.
doi_str_mv 10.1109/TPEL.2019.2914176
format article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2308296544</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><ieee_id>8703795</ieee_id><sourcerecordid>2308296544</sourcerecordid><originalsourceid>FETCH-LOGICAL-c384t-b0dc90d644fdf80b042984dd029c3ab72bfb1415e0239c65cd671f1ec4a4eccf3</originalsourceid><addsrcrecordid>eNo9kM1KAzEURoMoWKsPIG4CrqfeZDI_WWqtWqhYaF0PmSRTU6aTmqSFPoWvbIaWri659zsf4SB0T2BECPCn5XwyG1EgfEQ5YaTIL9CAcEYSIFBcogGUZZaUnKfX6Mb7NQBhGZAB-ltsRNsmC7PqRIs_rdKt6VZYdAovgqhNa8IBz51WRgZjO2wbPBcuIrrFr87abTK2XXA2LhSednvtgnYevwgf3zG_1G5j-urxT8RkPBofjPR90bRTZm_ULl7P5C26akTr9d1pDtH322Q5_khmX-_T8fMskWnJQlKDkhxUzlijmhJqYJSXTCmgXKaiLmjd1FFDpoGmXOaZVHlBGqIlE0xL2aRD9Hjs3Tr7u9M-VGu7c_GjvqIplJTnGWMxRY4p6az3TjfV1pmNcIeKQNV7r3rvVe-9OnmPzMORMVrrc74sIC14lv4DjPeB4g</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2308296544</pqid></control><display><type>article</type><title>Small-Signal Modeling and Stability Prediction of Parallel Droop-Controlled Inverters Based on Terminal Characteristics of Individual Inverters</title><source>IEEE Electronic Library (IEL) Journals</source><creator>Wang, Shike ; Liu, Zeng ; Liu, Jinjun ; Boroyevich, Dushan ; Burgos, Rolando</creator><creatorcontrib>Wang, Shike ; Liu, Zeng ; Liu, Jinjun ; Boroyevich, Dushan ; Burgos, Rolando</creatorcontrib><description>Parallel droop-controlled inverters with renewable energy sources are widely employed in islanded ac microgrids, where dynamic interactions among them may cause small-signal stability issues. Since the active power-frequency droop scheme is applied, the dynamic interactions among inverters exist not only in bus voltage and transmitted current, but also in variable system fundamental frequency. This paper introduces a novel small-signal terminal characteristic model for droop-controlled inverter. Besides conventional impedance and admittance, a new set of terminal characteristics is proposed to characterize the dynamics of fundamental frequency. Furthermore, the small-signal model of parallel inverters is constructed based on the terminal characteristics of individual inverters. Covering the fundamental frequency interactions, a stability prediction approach based on generalized Nyquist criterion is proposed for parallel droop-controlled inverters. Besides the product of impedance and admittance, an additional term is added in the system return ratio, which consists of the proposed terminal characteristics associated with the fundamental frequency. Finally, experimental results validate the effectiveness of this proposed stability prediction approach.</description><identifier>ISSN: 0885-8993</identifier><identifier>EISSN: 1941-0107</identifier><identifier>DOI: 10.1109/TPEL.2019.2914176</identifier><identifier>CODEN: ITPEE8</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Analytical models ; Circuit stability ; Control stability ; Droop-controlled inverters ; Dynamic stability ; Electric power grids ; Electrical impedance ; Frequency stability ; fundamental frequency dynamics ; Impedance ; Inverters ; Renewable energy sources ; Resonant frequencies ; Stability criteria ; stability prediction ; terminal characteristics ; Voltage control</subject><ispartof>IEEE transactions on power electronics, 2020-01, Vol.35 (1), p.1045-1063</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c384t-b0dc90d644fdf80b042984dd029c3ab72bfb1415e0239c65cd671f1ec4a4eccf3</citedby><cites>FETCH-LOGICAL-c384t-b0dc90d644fdf80b042984dd029c3ab72bfb1415e0239c65cd671f1ec4a4eccf3</cites><orcidid>0000-0002-4931-9317 ; 0000-0003-0050-2548</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/8703795$$EHTML$$P50$$Gieee$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,27924,27925,54796</link.rule.ids></links><search><creatorcontrib>Wang, Shike</creatorcontrib><creatorcontrib>Liu, Zeng</creatorcontrib><creatorcontrib>Liu, Jinjun</creatorcontrib><creatorcontrib>Boroyevich, Dushan</creatorcontrib><creatorcontrib>Burgos, Rolando</creatorcontrib><title>Small-Signal Modeling and Stability Prediction of Parallel Droop-Controlled Inverters Based on Terminal Characteristics of Individual Inverters</title><title>IEEE transactions on power electronics</title><addtitle>TPEL</addtitle><description>Parallel droop-controlled inverters with renewable energy sources are widely employed in islanded ac microgrids, where dynamic interactions among them may cause small-signal stability issues. Since the active power-frequency droop scheme is applied, the dynamic interactions among inverters exist not only in bus voltage and transmitted current, but also in variable system fundamental frequency. This paper introduces a novel small-signal terminal characteristic model for droop-controlled inverter. Besides conventional impedance and admittance, a new set of terminal characteristics is proposed to characterize the dynamics of fundamental frequency. Furthermore, the small-signal model of parallel inverters is constructed based on the terminal characteristics of individual inverters. Covering the fundamental frequency interactions, a stability prediction approach based on generalized Nyquist criterion is proposed for parallel droop-controlled inverters. Besides the product of impedance and admittance, an additional term is added in the system return ratio, which consists of the proposed terminal characteristics associated with the fundamental frequency. Finally, experimental results validate the effectiveness of this proposed stability prediction approach.</description><subject>Analytical models</subject><subject>Circuit stability</subject><subject>Control stability</subject><subject>Droop-controlled inverters</subject><subject>Dynamic stability</subject><subject>Electric power grids</subject><subject>Electrical impedance</subject><subject>Frequency stability</subject><subject>fundamental frequency dynamics</subject><subject>Impedance</subject><subject>Inverters</subject><subject>Renewable energy sources</subject><subject>Resonant frequencies</subject><subject>Stability criteria</subject><subject>stability prediction</subject><subject>terminal characteristics</subject><subject>Voltage control</subject><issn>0885-8993</issn><issn>1941-0107</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>ESBDL</sourceid><recordid>eNo9kM1KAzEURoMoWKsPIG4CrqfeZDI_WWqtWqhYaF0PmSRTU6aTmqSFPoWvbIaWri659zsf4SB0T2BECPCn5XwyG1EgfEQ5YaTIL9CAcEYSIFBcogGUZZaUnKfX6Mb7NQBhGZAB-ltsRNsmC7PqRIs_rdKt6VZYdAovgqhNa8IBz51WRgZjO2wbPBcuIrrFr87abTK2XXA2LhSednvtgnYevwgf3zG_1G5j-urxT8RkPBofjPR90bRTZm_ULl7P5C26akTr9d1pDtH322Q5_khmX-_T8fMskWnJQlKDkhxUzlijmhJqYJSXTCmgXKaiLmjd1FFDpoGmXOaZVHlBGqIlE0xL2aRD9Hjs3Tr7u9M-VGu7c_GjvqIplJTnGWMxRY4p6az3TjfV1pmNcIeKQNV7r3rvVe-9OnmPzMORMVrrc74sIC14lv4DjPeB4g</recordid><startdate>202001</startdate><enddate>202001</enddate><creator>Wang, Shike</creator><creator>Liu, Zeng</creator><creator>Liu, Jinjun</creator><creator>Boroyevich, Dushan</creator><creator>Burgos, Rolando</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>ESBDL</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-4931-9317</orcidid><orcidid>https://orcid.org/0000-0003-0050-2548</orcidid></search><sort><creationdate>202001</creationdate><title>Small-Signal Modeling and Stability Prediction of Parallel Droop-Controlled Inverters Based on Terminal Characteristics of Individual Inverters</title><author>Wang, Shike ; Liu, Zeng ; Liu, Jinjun ; Boroyevich, Dushan ; Burgos, Rolando</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c384t-b0dc90d644fdf80b042984dd029c3ab72bfb1415e0239c65cd671f1ec4a4eccf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Analytical models</topic><topic>Circuit stability</topic><topic>Control stability</topic><topic>Droop-controlled inverters</topic><topic>Dynamic stability</topic><topic>Electric power grids</topic><topic>Electrical impedance</topic><topic>Frequency stability</topic><topic>fundamental frequency dynamics</topic><topic>Impedance</topic><topic>Inverters</topic><topic>Renewable energy sources</topic><topic>Resonant frequencies</topic><topic>Stability criteria</topic><topic>stability prediction</topic><topic>terminal characteristics</topic><topic>Voltage control</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Shike</creatorcontrib><creatorcontrib>Liu, Zeng</creatorcontrib><creatorcontrib>Liu, Jinjun</creatorcontrib><creatorcontrib>Boroyevich, Dushan</creatorcontrib><creatorcontrib>Burgos, Rolando</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE Open Access Journals</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEL</collection><collection>CrossRef</collection><collection>Electronics &amp; Communications Abstracts</collection><collection>Mechanical &amp; Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on power electronics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Shike</au><au>Liu, Zeng</au><au>Liu, Jinjun</au><au>Boroyevich, Dushan</au><au>Burgos, Rolando</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Small-Signal Modeling and Stability Prediction of Parallel Droop-Controlled Inverters Based on Terminal Characteristics of Individual Inverters</atitle><jtitle>IEEE transactions on power electronics</jtitle><stitle>TPEL</stitle><date>2020-01</date><risdate>2020</risdate><volume>35</volume><issue>1</issue><spage>1045</spage><epage>1063</epage><pages>1045-1063</pages><issn>0885-8993</issn><eissn>1941-0107</eissn><coden>ITPEE8</coden><abstract>Parallel droop-controlled inverters with renewable energy sources are widely employed in islanded ac microgrids, where dynamic interactions among them may cause small-signal stability issues. Since the active power-frequency droop scheme is applied, the dynamic interactions among inverters exist not only in bus voltage and transmitted current, but also in variable system fundamental frequency. This paper introduces a novel small-signal terminal characteristic model for droop-controlled inverter. Besides conventional impedance and admittance, a new set of terminal characteristics is proposed to characterize the dynamics of fundamental frequency. Furthermore, the small-signal model of parallel inverters is constructed based on the terminal characteristics of individual inverters. Covering the fundamental frequency interactions, a stability prediction approach based on generalized Nyquist criterion is proposed for parallel droop-controlled inverters. Besides the product of impedance and admittance, an additional term is added in the system return ratio, which consists of the proposed terminal characteristics associated with the fundamental frequency. Finally, experimental results validate the effectiveness of this proposed stability prediction approach.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TPEL.2019.2914176</doi><tpages>19</tpages><orcidid>https://orcid.org/0000-0002-4931-9317</orcidid><orcidid>https://orcid.org/0000-0003-0050-2548</orcidid><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0885-8993
ispartof IEEE transactions on power electronics, 2020-01, Vol.35 (1), p.1045-1063
issn 0885-8993
1941-0107
language eng
recordid cdi_proquest_journals_2308296544
source IEEE Electronic Library (IEL) Journals
subjects Analytical models
Circuit stability
Control stability
Droop-controlled inverters
Dynamic stability
Electric power grids
Electrical impedance
Frequency stability
fundamental frequency dynamics
Impedance
Inverters
Renewable energy sources
Resonant frequencies
Stability criteria
stability prediction
terminal characteristics
Voltage control
title Small-Signal Modeling and Stability Prediction of Parallel Droop-Controlled Inverters Based on Terminal Characteristics of Individual Inverters
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-25T15%3A47%3A01IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Small-Signal%20Modeling%20and%20Stability%20Prediction%20of%20Parallel%20Droop-Controlled%20Inverters%20Based%20on%20Terminal%20Characteristics%20of%20Individual%20Inverters&rft.jtitle=IEEE%20transactions%20on%20power%20electronics&rft.au=Wang,%20Shike&rft.date=2020-01&rft.volume=35&rft.issue=1&rft.spage=1045&rft.epage=1063&rft.pages=1045-1063&rft.issn=0885-8993&rft.eissn=1941-0107&rft.coden=ITPEE8&rft_id=info:doi/10.1109/TPEL.2019.2914176&rft_dat=%3Cproquest_cross%3E2308296544%3C/proquest_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c384t-b0dc90d644fdf80b042984dd029c3ab72bfb1415e0239c65cd671f1ec4a4eccf3%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=2308296544&rft_id=info:pmid/&rft_ieee_id=8703795&rfr_iscdi=true