Active Harmonic Compensation and Stability Improvement in High-Power Grid-Connected Inverters Using Unified Power Quality Conditioner
Multifunctional features of grid-connected inverters can be used for harmonic compensation of local load voltage and grid-injected current. But, in high-power grid-connected inverters, there is a challenge due to low switching frequency. On the other hand, simultaneous compensation of local load vol...
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| Format: | Article |
| Language: | English |
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University of Sistan and Baluchestan
2023-09-01
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| Series: | International Journal of Industrial Electronics, Control and Optimization |
| Subjects: | |
| Online Access: | https://ieco.usb.ac.ir/article_7880_3f819259a6ca873fb07075d1d295a9a8.pdf |
| _version_ | 1797670292763443200 |
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| author | Elham Samavati Hamid Reza Mohammadi |
| author_facet | Elham Samavati Hamid Reza Mohammadi |
| author_sort | Elham Samavati |
| collection | DOAJ |
| description | Multifunctional features of grid-connected inverters can be used for harmonic compensation of local load voltage and grid-injected current. But, in high-power grid-connected inverters, there is a challenge due to low switching frequency. On the other hand, simultaneous compensation of local load voltage and grid-injected current harmonics is an important issue in grid-connected inverters. Using a Unified Power Quality Conditioner (UPQC) at the Point of Common Coupling (PPC), an improved active harmonic compensation method is proposed which is appropriate for high-power low-frequency grid-connected inverters. The UPQC operates as a combination of a negative shunt virtual admittance and a negative series virtual impedance at the PCC. It suppresses the disturbances caused by local load variation and grid impedance change. Using a low-power, high-frequency UPQC, local load voltage and grid-injected current harmonics up to higher-order components are simultaneously compensated despite grid impedance changes and nonlinear local load variations. The control system is designed according to the impedance-based stability criterion to ensure the system's stability. The theoretical results are validated using different case study simulations in MATLAB/Simulink software. |
| first_indexed | 2024-03-11T20:57:35Z |
| format | Article |
| id | doaj.art-4cb02e3d9bd74f50a5fb2e6068caa92f |
| institution | Directory Open Access Journal |
| issn | 2645-3517 2645-3568 |
| language | English |
| last_indexed | 2024-03-11T20:57:35Z |
| publishDate | 2023-09-01 |
| publisher | University of Sistan and Baluchestan |
| record_format | Article |
| series | International Journal of Industrial Electronics, Control and Optimization |
| spelling | doaj.art-4cb02e3d9bd74f50a5fb2e6068caa92f2023-09-30T03:40:51ZengUniversity of Sistan and BaluchestanInternational Journal of Industrial Electronics, Control and Optimization2645-35172645-35682023-09-016319320410.22111/ieco.2023.45861.14877880Active Harmonic Compensation and Stability Improvement in High-Power Grid-Connected Inverters Using Unified Power Quality ConditionerElham Samavati0Hamid Reza Mohammadi1University of KashanUniversity of KashanMultifunctional features of grid-connected inverters can be used for harmonic compensation of local load voltage and grid-injected current. But, in high-power grid-connected inverters, there is a challenge due to low switching frequency. On the other hand, simultaneous compensation of local load voltage and grid-injected current harmonics is an important issue in grid-connected inverters. Using a Unified Power Quality Conditioner (UPQC) at the Point of Common Coupling (PPC), an improved active harmonic compensation method is proposed which is appropriate for high-power low-frequency grid-connected inverters. The UPQC operates as a combination of a negative shunt virtual admittance and a negative series virtual impedance at the PCC. It suppresses the disturbances caused by local load variation and grid impedance change. Using a low-power, high-frequency UPQC, local load voltage and grid-injected current harmonics up to higher-order components are simultaneously compensated despite grid impedance changes and nonlinear local load variations. The control system is designed according to the impedance-based stability criterion to ensure the system's stability. The theoretical results are validated using different case study simulations in MATLAB/Simulink software.https://ieco.usb.ac.ir/article_7880_3f819259a6ca873fb07075d1d295a9a8.pdfunited power quality conditioner (upqc)grid-connected inverterweak gridimpedance-based stability criterionnonlinear load |
| spellingShingle | Elham Samavati Hamid Reza Mohammadi Active Harmonic Compensation and Stability Improvement in High-Power Grid-Connected Inverters Using Unified Power Quality Conditioner International Journal of Industrial Electronics, Control and Optimization united power quality conditioner (upqc) grid-connected inverter weak grid impedance-based stability criterion nonlinear load |
| title | Active Harmonic Compensation and Stability Improvement in High-Power Grid-Connected Inverters Using Unified Power Quality Conditioner |
| title_full | Active Harmonic Compensation and Stability Improvement in High-Power Grid-Connected Inverters Using Unified Power Quality Conditioner |
| title_fullStr | Active Harmonic Compensation and Stability Improvement in High-Power Grid-Connected Inverters Using Unified Power Quality Conditioner |
| title_full_unstemmed | Active Harmonic Compensation and Stability Improvement in High-Power Grid-Connected Inverters Using Unified Power Quality Conditioner |
| title_short | Active Harmonic Compensation and Stability Improvement in High-Power Grid-Connected Inverters Using Unified Power Quality Conditioner |
| title_sort | active harmonic compensation and stability improvement in high power grid connected inverters using unified power quality conditioner |
| topic | united power quality conditioner (upqc) grid-connected inverter weak grid impedance-based stability criterion nonlinear load |
| url | https://ieco.usb.ac.ir/article_7880_3f819259a6ca873fb07075d1d295a9a8.pdf |
| work_keys_str_mv | AT elhamsamavati activeharmoniccompensationandstabilityimprovementinhighpowergridconnectedinvertersusingunifiedpowerqualityconditioner AT hamidrezamohammadi activeharmoniccompensationandstabilityimprovementinhighpowergridconnectedinvertersusingunifiedpowerqualityconditioner |