SRFPI-LADRC Based Control Strategy for Off-Grid Single-Phase Inverter: Design, Analysis, and Verification
Linear active disturbance rejection control (LADRC) has been extensively used in various areas due to its excellent disturbance suppression capability. When LADRC is applied to a single-phase inverter for tracking a sinusoidal reference signal, there is an inherent tracking inaccuracy problem. The s...
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| Format: | Article |
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MDPI AG
2023-02-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/12/4/962 |
| _version_ | 1797621336333352960 |
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| author | Liaoyuan Lin Haoda Li Kai Zhu Lingling Shi |
| author_facet | Liaoyuan Lin Haoda Li Kai Zhu Lingling Shi |
| author_sort | Liaoyuan Lin |
| collection | DOAJ |
| description | Linear active disturbance rejection control (LADRC) has been extensively used in various areas due to its excellent disturbance suppression capability. When LADRC is applied to a single-phase inverter for tracking a sinusoidal reference signal, there is an inherent tracking inaccuracy problem. The steady-state error can be removed with the synchronous reference frame proportional-integral (SRFPI) control, which generates two orthogonal signals. In this paper, a modified control method based on compound SRFPI and LADRC for an off-grid single-phase inverter is put forward, where both output signals of SRFPI are employed as the reference signals of LADRC. Furthermore, a selective harmonic compensation method is performed by paralleling multiple SRFPI controllers to further reduce the selective harmonic components. Detailed theoretical analyses including system stability, robustness, performance of voltage tracking error and disturbance rejection are presented, which indicate that this organic combination fuses the merits of both SRFPI and LADRC without complicating the control design. Additionally, contrast experiments are conducted to demonstrate its effectiveness and superiority. These findings demonstrate that the system realizes a slight voltage tracking error and steady-state error, rapid dynamic response, and low total harmonic distortion (THD), especially under highly nonlinear load conditions. |
| first_indexed | 2024-03-11T08:54:28Z |
| format | Article |
| id | doaj.art-fa70ae2e877143f1b0306338f7ce0b80 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-11T08:54:28Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-fa70ae2e877143f1b0306338f7ce0b802023-11-16T20:12:51ZengMDPI AGElectronics2079-92922023-02-0112496210.3390/electronics12040962SRFPI-LADRC Based Control Strategy for Off-Grid Single-Phase Inverter: Design, Analysis, and VerificationLiaoyuan Lin0Haoda Li1Kai Zhu2Lingling Shi3College of Information Science and Engineering, Huaqiao University, Xiamen 362021, ChinaCollege of Information Science and Engineering, Huaqiao University, Xiamen 362021, ChinaAutomotive Power R&D Department, Suzhou Inovance Automotive Co., Ltd., Suzhou 215000, ChinaCollege of Information Science and Engineering, Huaqiao University, Xiamen 362021, ChinaLinear active disturbance rejection control (LADRC) has been extensively used in various areas due to its excellent disturbance suppression capability. When LADRC is applied to a single-phase inverter for tracking a sinusoidal reference signal, there is an inherent tracking inaccuracy problem. The steady-state error can be removed with the synchronous reference frame proportional-integral (SRFPI) control, which generates two orthogonal signals. In this paper, a modified control method based on compound SRFPI and LADRC for an off-grid single-phase inverter is put forward, where both output signals of SRFPI are employed as the reference signals of LADRC. Furthermore, a selective harmonic compensation method is performed by paralleling multiple SRFPI controllers to further reduce the selective harmonic components. Detailed theoretical analyses including system stability, robustness, performance of voltage tracking error and disturbance rejection are presented, which indicate that this organic combination fuses the merits of both SRFPI and LADRC without complicating the control design. Additionally, contrast experiments are conducted to demonstrate its effectiveness and superiority. These findings demonstrate that the system realizes a slight voltage tracking error and steady-state error, rapid dynamic response, and low total harmonic distortion (THD), especially under highly nonlinear load conditions.https://www.mdpi.com/2079-9292/12/4/962inverterlinear active disturbance rejection control (LADRC)synchronous reference frame proportional-integral (SRFPI)tracking errorharmonic compensation |
| spellingShingle | Liaoyuan Lin Haoda Li Kai Zhu Lingling Shi SRFPI-LADRC Based Control Strategy for Off-Grid Single-Phase Inverter: Design, Analysis, and Verification Electronics inverter linear active disturbance rejection control (LADRC) synchronous reference frame proportional-integral (SRFPI) tracking error harmonic compensation |
| title | SRFPI-LADRC Based Control Strategy for Off-Grid Single-Phase Inverter: Design, Analysis, and Verification |
| title_full | SRFPI-LADRC Based Control Strategy for Off-Grid Single-Phase Inverter: Design, Analysis, and Verification |
| title_fullStr | SRFPI-LADRC Based Control Strategy for Off-Grid Single-Phase Inverter: Design, Analysis, and Verification |
| title_full_unstemmed | SRFPI-LADRC Based Control Strategy for Off-Grid Single-Phase Inverter: Design, Analysis, and Verification |
| title_short | SRFPI-LADRC Based Control Strategy for Off-Grid Single-Phase Inverter: Design, Analysis, and Verification |
| title_sort | srfpi ladrc based control strategy for off grid single phase inverter design analysis and verification |
| topic | inverter linear active disturbance rejection control (LADRC) synchronous reference frame proportional-integral (SRFPI) tracking error harmonic compensation |
| url | https://www.mdpi.com/2079-9292/12/4/962 |
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