Nonlinear and Transient Stability Analysis of Phase-Locked Loops in Grid-Connected Converters
The undesired nonlinear operation of phase-locked loops (PLL) is one of the main causes of transient instability in grid-connected converters. However, the stable operating region of PLL, knowing which is helpful for protection purposes, is hard to find due to the nonlinear characteristic of the tra...
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| Veröffentlicht in: | IEEE transactions on power electronics 2021-01, Vol.36 (1), p.1018-1029 |
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| container_title | IEEE transactions on power electronics |
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| creator | Zhao, Jiantao Huang, Meng Yan, Han Tse, Chi K. Zha, Xiaoming |
| description | The undesired nonlinear operation of phase-locked loops (PLL) is one of the main causes of transient instability in grid-connected converters. However, the stable operating region of PLL, knowing which is helpful for protection purposes, is hard to find due to the nonlinear characteristic of the transient process. In this article, the nonlinear characteristic of the PLL control loop relevant to the grid-connected converter operation is identified. The averaging method is applied to derive a time-domain expression for the PLL operation under disturbance. Based on the analytical expression, the transient response and related stability criterion are established, and the PLL design is improved while targeted to focus on various ac grid faults or disturbances. The results, applicable to transient stability enhancement, are verified by circuit simulations and experiments. |
| doi_str_mv | 10.1109/TPEL.2020.3000516 |
| format | Article |
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However, the stable operating region of PLL, knowing which is helpful for protection purposes, is hard to find due to the nonlinear characteristic of the transient process. In this article, the nonlinear characteristic of the PLL control loop relevant to the grid-connected converter operation is identified. The averaging method is applied to derive a time-domain expression for the PLL operation under disturbance. Based on the analytical expression, the transient response and related stability criterion are established, and the PLL design is improved while targeted to focus on various ac grid faults or disturbances. 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However, the stable operating region of PLL, knowing which is helpful for protection purposes, is hard to find due to the nonlinear characteristic of the transient process. In this article, the nonlinear characteristic of the PLL control loop relevant to the grid-connected converter operation is identified. The averaging method is applied to derive a time-domain expression for the PLL operation under disturbance. Based on the analytical expression, the transient response and related stability criterion are established, and the PLL design is improved while targeted to focus on various ac grid faults or disturbances. The results, applicable to transient stability enhancement, are verified by circuit simulations and experiments.</description><subject>Circuit stability</subject><subject>Circuits</subject><subject>Converters</subject><subject>Damping</subject><subject>Grid-connected converter</subject><subject>Nonlinear analysis</subject><subject>Phase locked loops</subject><subject>Phase locked systems</subject><subject>phase-locked loop (PLL)</subject><subject>Power system stability</subject><subject>Stability analysis</subject><subject>Stability criteria</subject><subject>Transient analysis</subject><subject>Transient response</subject><subject>Transient stability</subject><issn>0885-8993</issn><issn>1941-0107</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kE1LAzEQhoMoWKs_QLwEPG-dSfYrx1JqFRYtWI8SstksptakJluh_96UFk8zDM87zDyE3CJMEEE8rJbzZsKAwYQDQIHlGRmhyDEDhOqcjKCui6wWgl-SqxjXAJgXgCPy8eLdxjqjAlWuo6ugXLTGDfRtUK3d2GFPp05t9tFG6nu6_FTRZI3XX6ajjffbSK2ji2C7bOadM3pI89T9mjCYEK_JRa820dyc6pi8P85Xs6eseV08z6ZNppngQ7qLg8K8ZpozzntWKtMyVRoNPXZa8TbXRckVirKuOoCuV6quW9aJ9CHkrOdjcn_cuw3-Z2fiINd-F9LdUbI8R558VCxReKR08DEG08ttsN8q7CWCPFiUB4vyYFGeLKbM3TFjjTH_vEh0VSP_AzZGbcE</recordid><startdate>202101</startdate><enddate>202101</enddate><creator>Zhao, Jiantao</creator><creator>Huang, Meng</creator><creator>Yan, Han</creator><creator>Tse, Chi K.</creator><creator>Zha, Xiaoming</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</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/0000-0002-1102-891X</orcidid><orcidid>https://orcid.org/0000-0002-0462-3999</orcidid><orcidid>https://orcid.org/0000-0002-7929-1589</orcidid><orcidid>https://orcid.org/0000-0002-0139-9178</orcidid></search><sort><creationdate>202101</creationdate><title>Nonlinear and Transient Stability Analysis of Phase-Locked Loops in Grid-Connected Converters</title><author>Zhao, Jiantao ; Huang, Meng ; Yan, Han ; Tse, Chi K. ; Zha, Xiaoming</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c293t-8930a1482c3233f26aeb2a6ec0f1dca3b4c563a19687d00dfaa88b2d9194042f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Circuit stability</topic><topic>Circuits</topic><topic>Converters</topic><topic>Damping</topic><topic>Grid-connected converter</topic><topic>Nonlinear analysis</topic><topic>Phase locked loops</topic><topic>Phase locked systems</topic><topic>phase-locked loop (PLL)</topic><topic>Power system stability</topic><topic>Stability analysis</topic><topic>Stability criteria</topic><topic>Transient analysis</topic><topic>Transient response</topic><topic>Transient stability</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhao, Jiantao</creatorcontrib><creatorcontrib>Huang, Meng</creatorcontrib><creatorcontrib>Yan, Han</creatorcontrib><creatorcontrib>Tse, Chi K.</creatorcontrib><creatorcontrib>Zha, Xiaoming</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998–Present</collection><collection>IEEE</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & 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_linktorsrc</fulltext></delivery><addata><au>Zhao, Jiantao</au><au>Huang, Meng</au><au>Yan, Han</au><au>Tse, Chi K.</au><au>Zha, Xiaoming</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Nonlinear and Transient Stability Analysis of Phase-Locked Loops in Grid-Connected Converters</atitle><jtitle>IEEE transactions on power electronics</jtitle><stitle>TPEL</stitle><date>2021-01</date><risdate>2021</risdate><volume>36</volume><issue>1</issue><spage>1018</spage><epage>1029</epage><pages>1018-1029</pages><issn>0885-8993</issn><eissn>1941-0107</eissn><coden>ITPEE8</coden><abstract>The undesired nonlinear operation of phase-locked loops (PLL) is one of the main causes of transient instability in grid-connected converters. However, the stable operating region of PLL, knowing which is helpful for protection purposes, is hard to find due to the nonlinear characteristic of the transient process. In this article, the nonlinear characteristic of the PLL control loop relevant to the grid-connected converter operation is identified. The averaging method is applied to derive a time-domain expression for the PLL operation under disturbance. Based on the analytical expression, the transient response and related stability criterion are established, and the PLL design is improved while targeted to focus on various ac grid faults or disturbances. 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| subjects | Circuit stability Circuits Converters Damping Grid-connected converter Nonlinear analysis Phase locked loops Phase locked systems phase-locked loop (PLL) Power system stability Stability analysis Stability criteria Transient analysis Transient response Transient stability |
| title | Nonlinear and Transient Stability Analysis of Phase-Locked Loops in Grid-Connected Converters |
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