A Stationary Reference Frame Current Control Algorithm for Improvement of Transient Dynamics of a Single Phase Grid Connected Inverter
This paper proposes a stationary reference frame current control algorithm for a single-phase grid-connected inverter (GCI) for improvement of transient dynamic performance. Disturbance, i.e., grid voltage in a target system, is estimated using a stator current observer, and the estimated disturbanc...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/9/5/722 |
| _version_ | 1797569496776441856 |
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| author | Horyeong Jeong Jae Suk Lee |
| author_facet | Horyeong Jeong Jae Suk Lee |
| author_sort | Horyeong Jeong |
| collection | DOAJ |
| description | This paper proposes a stationary reference frame current control algorithm for a single-phase grid-connected inverter (GCI) for improvement of transient dynamic performance. Disturbance, i.e., grid voltage in a target system, is estimated using a stator current observer, and the estimated disturbance is applied to a current controller for implementation of disturbance rejection control (DRC). In the proposed current control algorithm, the disturbance rejection control algorithm is applied to reduce the overcurrent occurring in the single-phase grid-connected inverter when grid faults happen. In this paper, the AC phase current of a single-phase inverter is controlled, instead of the current vector, which is a DC signal. To compensate for the drawbacks of controlling the AC phase current, such as phase lag and steady-state error, command feedforward control is also applied in the proposed control system. The proposed control algorithm is mathematically derived and represented in transfer functions and implemented via simulation and experiment. |
| first_indexed | 2024-03-10T20:11:26Z |
| format | Article |
| id | doaj.art-68df113974794d06a31796d794618cc6 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T20:11:26Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-68df113974794d06a31796d794618cc62023-11-19T22:52:18ZengMDPI AGElectronics2079-92922020-04-019572210.3390/electronics9050722A Stationary Reference Frame Current Control Algorithm for Improvement of Transient Dynamics of a Single Phase Grid Connected InverterHoryeong Jeong0Jae Suk Lee1Department of Electrical Engineering, Jeonbuk National University, Jeonju 54896, KoreaDepartment of Electrical Engineering, Jeonbuk National University, Jeonju 54896, KoreaThis paper proposes a stationary reference frame current control algorithm for a single-phase grid-connected inverter (GCI) for improvement of transient dynamic performance. Disturbance, i.e., grid voltage in a target system, is estimated using a stator current observer, and the estimated disturbance is applied to a current controller for implementation of disturbance rejection control (DRC). In the proposed current control algorithm, the disturbance rejection control algorithm is applied to reduce the overcurrent occurring in the single-phase grid-connected inverter when grid faults happen. In this paper, the AC phase current of a single-phase inverter is controlled, instead of the current vector, which is a DC signal. To compensate for the drawbacks of controlling the AC phase current, such as phase lag and steady-state error, command feedforward control is also applied in the proposed control system. The proposed control algorithm is mathematically derived and represented in transfer functions and implemented via simulation and experiment.https://www.mdpi.com/2079-9292/9/5/722grid connected invertercommand feedforward controldisturbance rejection control |
| spellingShingle | Horyeong Jeong Jae Suk Lee A Stationary Reference Frame Current Control Algorithm for Improvement of Transient Dynamics of a Single Phase Grid Connected Inverter Electronics grid connected inverter command feedforward control disturbance rejection control |
| title | A Stationary Reference Frame Current Control Algorithm for Improvement of Transient Dynamics of a Single Phase Grid Connected Inverter |
| title_full | A Stationary Reference Frame Current Control Algorithm for Improvement of Transient Dynamics of a Single Phase Grid Connected Inverter |
| title_fullStr | A Stationary Reference Frame Current Control Algorithm for Improvement of Transient Dynamics of a Single Phase Grid Connected Inverter |
| title_full_unstemmed | A Stationary Reference Frame Current Control Algorithm for Improvement of Transient Dynamics of a Single Phase Grid Connected Inverter |
| title_short | A Stationary Reference Frame Current Control Algorithm for Improvement of Transient Dynamics of a Single Phase Grid Connected Inverter |
| title_sort | stationary reference frame current control algorithm for improvement of transient dynamics of a single phase grid connected inverter |
| topic | grid connected inverter command feedforward control disturbance rejection control |
| url | https://www.mdpi.com/2079-9292/9/5/722 |
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