Model-Based Current Sharing Approach for DCM Interleaved Flyback Micro-Inverter
Current sharing control is a challenge for a discontinuous conduction mode (DCM) micro-inverter based on interleaved flyback topology. To solve this problem, this study proposes a novel and systemic model-based approach. Firstly, an accurate fourth-order model is presented for the interleaved flybac...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-06-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1996-1073/11/7/1685 |
| _version_ | 1798006682870087680 |
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| author | Mi Dong Xiaoyu Tian Li Li Dongran Song Lina Wang Miao Zhao |
| author_facet | Mi Dong Xiaoyu Tian Li Li Dongran Song Lina Wang Miao Zhao |
| author_sort | Mi Dong |
| collection | DOAJ |
| description | Current sharing control is a challenge for a discontinuous conduction mode (DCM) micro-inverter based on interleaved flyback topology. To solve this problem, this study proposes a novel and systemic model-based approach. Firstly, an accurate fourth-order model is presented for the interleaved flyback circuit, which takes the two flybacks’ parameter mismatch and coupling into account. Secondly, based on the presented model, a continuous time sliding mode current controller is proposed to tackle the output imbalance caused by parameter mismatch, coupling and disturbance. The proposed controller is derived from the Lyapunov function without switching conditions. Finally, the effectiveness of the proposed model and control method is validated by simulation tests using MATLAB/SIMULINK. Simulation results show that the proposed approach improves the current sharing for the interleaved flyback micro-inverter when compared to the conventional current sharing approach. |
| first_indexed | 2024-04-11T12:58:18Z |
| format | Article |
| id | doaj.art-7b4478f987ea43309165398b01fd7bb0 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T12:58:18Z |
| publishDate | 2018-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-7b4478f987ea43309165398b01fd7bb02022-12-22T04:23:00ZengMDPI AGEnergies1996-10732018-06-01117168510.3390/en11071685en11071685Model-Based Current Sharing Approach for DCM Interleaved Flyback Micro-InverterMi Dong0Xiaoyu Tian1Li Li2Dongran Song3Lina Wang4Miao Zhao5School of Information Science and Engineering, Yuelu Road, Central South University, Changsha 410083, ChinaSchool of Information Science and Engineering, Yuelu Road, Central South University, Changsha 410083, ChinaSchool of Information Science and Engineering, Yuelu Road, Central South University, Changsha 410083, ChinaSchool of Information Science and Engineering, Yuelu Road, Central South University, Changsha 410083, ChinaSchool of Automation Science and Electrical Engineering, Xueyuan Road, Beihang University, Beijing 100191, ChinaState Grid Hunan Electric Power Company Limited Research Institute, Changsha 410007, ChinaCurrent sharing control is a challenge for a discontinuous conduction mode (DCM) micro-inverter based on interleaved flyback topology. To solve this problem, this study proposes a novel and systemic model-based approach. Firstly, an accurate fourth-order model is presented for the interleaved flyback circuit, which takes the two flybacks’ parameter mismatch and coupling into account. Secondly, based on the presented model, a continuous time sliding mode current controller is proposed to tackle the output imbalance caused by parameter mismatch, coupling and disturbance. The proposed controller is derived from the Lyapunov function without switching conditions. Finally, the effectiveness of the proposed model and control method is validated by simulation tests using MATLAB/SIMULINK. Simulation results show that the proposed approach improves the current sharing for the interleaved flyback micro-inverter when compared to the conventional current sharing approach.http://www.mdpi.com/1996-1073/11/7/1685accurate modelingsliding mode control (SMC)current controlinterleaved flyback |
| spellingShingle | Mi Dong Xiaoyu Tian Li Li Dongran Song Lina Wang Miao Zhao Model-Based Current Sharing Approach for DCM Interleaved Flyback Micro-Inverter Energies accurate modeling sliding mode control (SMC) current control interleaved flyback |
| title | Model-Based Current Sharing Approach for DCM Interleaved Flyback Micro-Inverter |
| title_full | Model-Based Current Sharing Approach for DCM Interleaved Flyback Micro-Inverter |
| title_fullStr | Model-Based Current Sharing Approach for DCM Interleaved Flyback Micro-Inverter |
| title_full_unstemmed | Model-Based Current Sharing Approach for DCM Interleaved Flyback Micro-Inverter |
| title_short | Model-Based Current Sharing Approach for DCM Interleaved Flyback Micro-Inverter |
| title_sort | model based current sharing approach for dcm interleaved flyback micro inverter |
| topic | accurate modeling sliding mode control (SMC) current control interleaved flyback |
| url | http://www.mdpi.com/1996-1073/11/7/1685 |
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