Performance enhancement of parallel‐operated inverter‐based virtual synchronous generators supplying active load
Abstract Inverter‐based virtual synchronous generators (VSGs) by introducing the virtual inertia enhance the microgrid frequency stability. The subject of this paper is regarding the stability analysis and enhancement of the study system comprising parallel‐operated VSGs feeding an active load. The...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-06-01
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| Series: | IET Electric Power Applications |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/elp2.12307 |
| _version_ | 1797807493550702592 |
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| author | Mohsen Rahimi Morteza Momenzadeh Allahyar Akhbari Mohammad Hassan Khooban |
| author_facet | Mohsen Rahimi Morteza Momenzadeh Allahyar Akhbari Mohammad Hassan Khooban |
| author_sort | Mohsen Rahimi |
| collection | DOAJ |
| description | Abstract Inverter‐based virtual synchronous generators (VSGs) by introducing the virtual inertia enhance the microgrid frequency stability. The subject of this paper is regarding the stability analysis and enhancement of the study system comprising parallel‐operated VSGs feeding an active load. The active load with tightly closed‐loop control behaves such as constant power load resulting in stability issue. In the article, impacts of the dc‐side voltage control bandwidth of the active load and power level of active load on the system stability are examined. Then, an approach based on feedback linearising technique implemented on VSGs is presented for stabilising the system at higher levels of active load power. By employing the presented approach, the VSGs show reduced output impedance at the low and middle‐frequency ranges, and this in turn stabilises the system even at the rated level of the active load power and at higher control bandwidths of the active load dc‐side voltage control loop. Next, the linearised state‐space equations of converters and related controllers are transferred from local dq‐reference frames to a common dq‐reference frame, and then stability of the whole study system is analytically examined. At the end, time‐domain simulations and hardware‐in‐the‐loop experiments are given to verify the analytical results. |
| first_indexed | 2024-03-13T06:23:20Z |
| format | Article |
| id | doaj.art-06544aab386c4b3f8954c1a0b44e06ec |
| institution | Directory Open Access Journal |
| issn | 1751-8660 1751-8679 |
| language | English |
| last_indexed | 2024-03-13T06:23:20Z |
| publishDate | 2023-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Electric Power Applications |
| spelling | doaj.art-06544aab386c4b3f8954c1a0b44e06ec2023-06-09T11:01:23ZengWileyIET Electric Power Applications1751-86601751-86792023-06-0117683585410.1049/elp2.12307Performance enhancement of parallel‐operated inverter‐based virtual synchronous generators supplying active loadMohsen Rahimi0Morteza Momenzadeh1Allahyar Akhbari2Mohammad Hassan Khooban3Department of Electrical and Computer Engineering University of Kashan Kashan IranDepartment of Electrical and Computer Engineering University of Kashan Kashan IranDepartment of Electrical and Computer Engineering University of Kashan Kashan IranDepartment of Electrical and Computer Engineering Aarhus University Aarhus DenmarkAbstract Inverter‐based virtual synchronous generators (VSGs) by introducing the virtual inertia enhance the microgrid frequency stability. The subject of this paper is regarding the stability analysis and enhancement of the study system comprising parallel‐operated VSGs feeding an active load. The active load with tightly closed‐loop control behaves such as constant power load resulting in stability issue. In the article, impacts of the dc‐side voltage control bandwidth of the active load and power level of active load on the system stability are examined. Then, an approach based on feedback linearising technique implemented on VSGs is presented for stabilising the system at higher levels of active load power. By employing the presented approach, the VSGs show reduced output impedance at the low and middle‐frequency ranges, and this in turn stabilises the system even at the rated level of the active load power and at higher control bandwidths of the active load dc‐side voltage control loop. Next, the linearised state‐space equations of converters and related controllers are transferred from local dq‐reference frames to a common dq‐reference frame, and then stability of the whole study system is analytically examined. At the end, time‐domain simulations and hardware‐in‐the‐loop experiments are given to verify the analytical results.https://doi.org/10.1049/elp2.12307active loadparallel‐operated inverterstability enhancementvirtual synchronous generator‐based inverter |
| spellingShingle | Mohsen Rahimi Morteza Momenzadeh Allahyar Akhbari Mohammad Hassan Khooban Performance enhancement of parallel‐operated inverter‐based virtual synchronous generators supplying active load IET Electric Power Applications active load parallel‐operated inverter stability enhancement virtual synchronous generator‐based inverter |
| title | Performance enhancement of parallel‐operated inverter‐based virtual synchronous generators supplying active load |
| title_full | Performance enhancement of parallel‐operated inverter‐based virtual synchronous generators supplying active load |
| title_fullStr | Performance enhancement of parallel‐operated inverter‐based virtual synchronous generators supplying active load |
| title_full_unstemmed | Performance enhancement of parallel‐operated inverter‐based virtual synchronous generators supplying active load |
| title_short | Performance enhancement of parallel‐operated inverter‐based virtual synchronous generators supplying active load |
| title_sort | performance enhancement of parallel operated inverter based virtual synchronous generators supplying active load |
| topic | active load parallel‐operated inverter stability enhancement virtual synchronous generator‐based inverter |
| url | https://doi.org/10.1049/elp2.12307 |
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