Quantitative Design for the Battery Equalizing Charge/Discharge Controller of the Photovoltaic Energy Storage System
The purpose of this paper is to develop a photovoltaic module array with an energy storage system that has equalizing charge/discharge controls for regulating the power supply to the grid. Firstly, the boost converter is used in conjunction with maximum power point tracking (MPPT) such that the phot...
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MDPI AG
2022-12-01
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| Online Access: | https://www.mdpi.com/2313-0105/8/12/278 |
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| author | Kuei-Hsiang Chao Bing-Ze Huang |
| author_facet | Kuei-Hsiang Chao Bing-Ze Huang |
| author_sort | Kuei-Hsiang Chao |
| collection | DOAJ |
| description | The purpose of this paper is to develop a photovoltaic module array with an energy storage system that has equalizing charge/discharge controls for regulating the power supply to the grid. Firstly, the boost converter is used in conjunction with maximum power point tracking (MPPT) such that the photovoltaic module array (PVMA) can output maximum power at any time. The battery equalizing charge/discharge architecture is composed of multiple sets of bidirectional buck–boost soft-switching converters in serial connection in order to achieve zero-voltage switching (ZVS) and zero-current switching (ZCS) so that when the charge/discharge power is above 150 W, the converter efficiency can be increased by 3%. The voltage and current signals from the battery are captured and input into the digital signal processor (DSP) to establish an equalizing charge/discharge control rule. For the output voltage control of the bidirectional buck–boost soft-switching converter, the dynamic mode is derived by first using the step response at chosen operating point, then quantitatively designing the controller parameters for the converter, so that the output voltage response can meet the pre-defined performance specifications. Finally, actual test results prove that the equalizing charge/discharge time of the quantitative design controller is shortened by more than 10% when compared to the traditional proportional-integral (P-I) controller regardless of charging or discharging; this also proves that the design of the photovoltaic module array with an energy storage system (ESS) that has equalizing charge/discharge controls is valid. |
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| format | Article |
| id | doaj.art-b2ff5e21e05544b5ad00bb0a820c3eed |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-03-09T17:20:24Z |
| publishDate | 2022-12-01 |
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| spelling | doaj.art-b2ff5e21e05544b5ad00bb0a820c3eed2023-11-24T13:17:00ZengMDPI AGBatteries2313-01052022-12-0181227810.3390/batteries8120278Quantitative Design for the Battery Equalizing Charge/Discharge Controller of the Photovoltaic Energy Storage SystemKuei-Hsiang Chao0Bing-Ze Huang1Department of Electrical Engineering, National Chin-Yi University of Technology, Taichung 41170, TaiwanDepartment of Electrical Engineering, National Chin-Yi University of Technology, Taichung 41170, TaiwanThe purpose of this paper is to develop a photovoltaic module array with an energy storage system that has equalizing charge/discharge controls for regulating the power supply to the grid. Firstly, the boost converter is used in conjunction with maximum power point tracking (MPPT) such that the photovoltaic module array (PVMA) can output maximum power at any time. The battery equalizing charge/discharge architecture is composed of multiple sets of bidirectional buck–boost soft-switching converters in serial connection in order to achieve zero-voltage switching (ZVS) and zero-current switching (ZCS) so that when the charge/discharge power is above 150 W, the converter efficiency can be increased by 3%. The voltage and current signals from the battery are captured and input into the digital signal processor (DSP) to establish an equalizing charge/discharge control rule. For the output voltage control of the bidirectional buck–boost soft-switching converter, the dynamic mode is derived by first using the step response at chosen operating point, then quantitatively designing the controller parameters for the converter, so that the output voltage response can meet the pre-defined performance specifications. Finally, actual test results prove that the equalizing charge/discharge time of the quantitative design controller is shortened by more than 10% when compared to the traditional proportional-integral (P-I) controller regardless of charging or discharging; this also proves that the design of the photovoltaic module array with an energy storage system (ESS) that has equalizing charge/discharge controls is valid.https://www.mdpi.com/2313-0105/8/12/278photovoltaic module array (PVMA)energy storage system (ESS)maximum power point tracking (MPPT)bidirectional buck–boost soft-switching converterequalizing charge/dischargedigital signal processor (DSP) |
| spellingShingle | Kuei-Hsiang Chao Bing-Ze Huang Quantitative Design for the Battery Equalizing Charge/Discharge Controller of the Photovoltaic Energy Storage System Batteries photovoltaic module array (PVMA) energy storage system (ESS) maximum power point tracking (MPPT) bidirectional buck–boost soft-switching converter equalizing charge/discharge digital signal processor (DSP) |
| title | Quantitative Design for the Battery Equalizing Charge/Discharge Controller of the Photovoltaic Energy Storage System |
| title_full | Quantitative Design for the Battery Equalizing Charge/Discharge Controller of the Photovoltaic Energy Storage System |
| title_fullStr | Quantitative Design for the Battery Equalizing Charge/Discharge Controller of the Photovoltaic Energy Storage System |
| title_full_unstemmed | Quantitative Design for the Battery Equalizing Charge/Discharge Controller of the Photovoltaic Energy Storage System |
| title_short | Quantitative Design for the Battery Equalizing Charge/Discharge Controller of the Photovoltaic Energy Storage System |
| title_sort | quantitative design for the battery equalizing charge discharge controller of the photovoltaic energy storage system |
| topic | photovoltaic module array (PVMA) energy storage system (ESS) maximum power point tracking (MPPT) bidirectional buck–boost soft-switching converter equalizing charge/discharge digital signal processor (DSP) |
| url | https://www.mdpi.com/2313-0105/8/12/278 |
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