Quasi‐Z based adaptive sliding mode control for three‐phase photovoltaic grid‐connected system
Abstract Considering the non‐linear characteristics of both the input and output of photovoltaic (PV) modules and quasi‐Z‐source inverters, as well as the unpredictable natural factors such as large disturbances caused by changes in illumination and temperature, an average state model for the PV qua...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-11-01
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| Series: | IET Power Electronics |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/pel2.12584 |
| _version_ | 1797542461433708544 |
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| author | Yan Chen Junli Meng Yuanyuan Yan Lin Zhong |
| author_facet | Yan Chen Junli Meng Yuanyuan Yan Lin Zhong |
| author_sort | Yan Chen |
| collection | DOAJ |
| description | Abstract Considering the non‐linear characteristics of both the input and output of photovoltaic (PV) modules and quasi‐Z‐source inverters, as well as the unpredictable natural factors such as large disturbances caused by changes in illumination and temperature, an average state model for the PV quasi‐Z‐source inverter is established. This paper uses the output current of photovoltaic module, DC‐link capacitor voltage and its integral as state variables, then an adaptive reaching law with second‐order sliding mode characteristics is designed by combining with power reaching law and variable speed reaching law. By using the sliding mode controller based on the adaptive reaching law to control the stability of the DC‐link voltage of the quasi‐Z‐source inverter and the small capacitor voltage ripple, the photovoltaic system can operate stably at the maximum power point when the temperature and illumination conditions change abruptly, and the grid‐connected effect is improved. Through SIMULINK and RT‐LAB real‐time simulation, the effectiveness of the proposed adaptive sliding mode control strategy is verified when the environment changes, which effectively improves the dynamic response speed and grid‐connected effect of the system, and ensures the global robustness of the grid‐connected system. |
| first_indexed | 2024-03-10T13:30:53Z |
| format | Article |
| id | doaj.art-57319aa9efda4e82b96f592136574b60 |
| institution | Directory Open Access Journal |
| issn | 1755-4535 1755-4543 |
| language | English |
| last_indexed | 2024-03-10T13:30:53Z |
| publishDate | 2023-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Power Electronics |
| spelling | doaj.art-57319aa9efda4e82b96f592136574b602023-11-21T07:57:30ZengWileyIET Power Electronics1755-45351755-45432023-11-0116152577259110.1049/pel2.12584Quasi‐Z based adaptive sliding mode control for three‐phase photovoltaic grid‐connected systemYan Chen0Junli Meng1Yuanyuan Yan2Lin Zhong3School of Electrical and Electronic Engineering Chongqing University of Technology Chongqing ChinaSchool of Electrical and Electronic Engineering Chongqing University of Technology Chongqing ChinaChongqing Tsingshan Industrial Co., Ltd. Chongqing ChinaSchool of Electrical and Electronic Engineering Chongqing University of Technology Chongqing ChinaAbstract Considering the non‐linear characteristics of both the input and output of photovoltaic (PV) modules and quasi‐Z‐source inverters, as well as the unpredictable natural factors such as large disturbances caused by changes in illumination and temperature, an average state model for the PV quasi‐Z‐source inverter is established. This paper uses the output current of photovoltaic module, DC‐link capacitor voltage and its integral as state variables, then an adaptive reaching law with second‐order sliding mode characteristics is designed by combining with power reaching law and variable speed reaching law. By using the sliding mode controller based on the adaptive reaching law to control the stability of the DC‐link voltage of the quasi‐Z‐source inverter and the small capacitor voltage ripple, the photovoltaic system can operate stably at the maximum power point when the temperature and illumination conditions change abruptly, and the grid‐connected effect is improved. Through SIMULINK and RT‐LAB real‐time simulation, the effectiveness of the proposed adaptive sliding mode control strategy is verified when the environment changes, which effectively improves the dynamic response speed and grid‐connected effect of the system, and ensures the global robustness of the grid‐connected system.https://doi.org/10.1049/pel2.12584adaptive sliding mode control lawquasi‐Z‐source inverterthree‐phase photovoltaic grid‐connected |
| spellingShingle | Yan Chen Junli Meng Yuanyuan Yan Lin Zhong Quasi‐Z based adaptive sliding mode control for three‐phase photovoltaic grid‐connected system IET Power Electronics adaptive sliding mode control law quasi‐Z‐source inverter three‐phase photovoltaic grid‐connected |
| title | Quasi‐Z based adaptive sliding mode control for three‐phase photovoltaic grid‐connected system |
| title_full | Quasi‐Z based adaptive sliding mode control for three‐phase photovoltaic grid‐connected system |
| title_fullStr | Quasi‐Z based adaptive sliding mode control for three‐phase photovoltaic grid‐connected system |
| title_full_unstemmed | Quasi‐Z based adaptive sliding mode control for three‐phase photovoltaic grid‐connected system |
| title_short | Quasi‐Z based adaptive sliding mode control for three‐phase photovoltaic grid‐connected system |
| title_sort | quasi z based adaptive sliding mode control for three phase photovoltaic grid connected system |
| topic | adaptive sliding mode control law quasi‐Z‐source inverter three‐phase photovoltaic grid‐connected |
| url | https://doi.org/10.1049/pel2.12584 |
| work_keys_str_mv | AT yanchen quasizbasedadaptiveslidingmodecontrolforthreephasephotovoltaicgridconnectedsystem AT junlimeng quasizbasedadaptiveslidingmodecontrolforthreephasephotovoltaicgridconnectedsystem AT yuanyuanyan quasizbasedadaptiveslidingmodecontrolforthreephasephotovoltaicgridconnectedsystem AT linzhong quasizbasedadaptiveslidingmodecontrolforthreephasephotovoltaicgridconnectedsystem |