A Communication-Free Decentralized Control for Grid-Connected Cascaded PV Inverters
This paper proposes a communication-free decentralized control for grid-connected cascaded PV inverter systems. The cascaded PV inverter system is an AC-stacked architecture, which promotes the integration of low voltage (LV) distributed photovoltaic (PV) generators into the medium/high voltage (MV/...
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MDPI AG
2018-05-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/11/6/1375 |
| _version_ | 1811184125029122048 |
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| author | Mei Su Chao Luo Xiaochao Hou Wenbin Yuan Zhangjie Liu Hua Han Josep M. Guerrero |
| author_facet | Mei Su Chao Luo Xiaochao Hou Wenbin Yuan Zhangjie Liu Hua Han Josep M. Guerrero |
| author_sort | Mei Su |
| collection | DOAJ |
| description | This paper proposes a communication-free decentralized control for grid-connected cascaded PV inverter systems. The cascaded PV inverter system is an AC-stacked architecture, which promotes the integration of low voltage (LV) distributed photovoltaic (PV) generators into the medium/high voltage (MV/HV) power grid. The proposed decentralized control is fully free of communication links and phase-locked loop (PLL). All cascaded inverters are controlled as current controlled voltage sources locally and independently to achieve maximum power point tracking (MPPT) and frequency self-synchronization with the power grid. As a result, control complexity as well as communication costs are reduced, and the system’s reliability is greatly enhanced compared with existing communication-based methods. System stability and dynamic performance are evaluated by small-signal analysis to guide the design of system parameters. The feasibility and effectiveness of the proposed solution are verified by simulation tests. |
| first_indexed | 2024-04-11T13:07:59Z |
| format | Article |
| id | doaj.art-3414af606d1a4f8a865c2824d717481f |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T13:07:59Z |
| publishDate | 2018-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-3414af606d1a4f8a865c2824d717481f2022-12-22T04:22:39ZengMDPI AGEnergies1996-10732018-05-01116137510.3390/en11061375en11061375A Communication-Free Decentralized Control for Grid-Connected Cascaded PV InvertersMei Su0Chao Luo1Xiaochao Hou2Wenbin Yuan3Zhangjie Liu4Hua Han5Josep M. Guerrero6School of Information Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Information Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Information Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Information Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Information Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Information Science and Engineering, Central South University, Changsha 410083, ChinaDepartment of Energy Technology, Aalborg University, DK-9220 Aalborg East, DenmarkThis paper proposes a communication-free decentralized control for grid-connected cascaded PV inverter systems. The cascaded PV inverter system is an AC-stacked architecture, which promotes the integration of low voltage (LV) distributed photovoltaic (PV) generators into the medium/high voltage (MV/HV) power grid. The proposed decentralized control is fully free of communication links and phase-locked loop (PLL). All cascaded inverters are controlled as current controlled voltage sources locally and independently to achieve maximum power point tracking (MPPT) and frequency self-synchronization with the power grid. As a result, control complexity as well as communication costs are reduced, and the system’s reliability is greatly enhanced compared with existing communication-based methods. System stability and dynamic performance are evaluated by small-signal analysis to guide the design of system parameters. The feasibility and effectiveness of the proposed solution are verified by simulation tests.http://www.mdpi.com/1996-1073/11/6/1375cascaded invertersPV invertersPV generation architecturedecentralized controlfrequency self-synchronization |
| spellingShingle | Mei Su Chao Luo Xiaochao Hou Wenbin Yuan Zhangjie Liu Hua Han Josep M. Guerrero A Communication-Free Decentralized Control for Grid-Connected Cascaded PV Inverters Energies cascaded inverters PV inverters PV generation architecture decentralized control frequency self-synchronization |
| title | A Communication-Free Decentralized Control for Grid-Connected Cascaded PV Inverters |
| title_full | A Communication-Free Decentralized Control for Grid-Connected Cascaded PV Inverters |
| title_fullStr | A Communication-Free Decentralized Control for Grid-Connected Cascaded PV Inverters |
| title_full_unstemmed | A Communication-Free Decentralized Control for Grid-Connected Cascaded PV Inverters |
| title_short | A Communication-Free Decentralized Control for Grid-Connected Cascaded PV Inverters |
| title_sort | communication free decentralized control for grid connected cascaded pv inverters |
| topic | cascaded inverters PV inverters PV generation architecture decentralized control frequency self-synchronization |
| url | http://www.mdpi.com/1996-1073/11/6/1375 |
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