Battery Current-Sharing Power Decoupling Method for Realizing a Single-Stage Hybrid PV System
Conventionally, the single-stage grid-connected PV inverter needs a large PV-side electrolytic capacitor to suppress the double-line frequency current ripple to keep the PV operating at maximum power point (MPP). However, the short lifetime electrolytic capacitor will reduce the PV inverter ...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9861600/ |
| _version_ | 1817999461203312640 |
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| author | Liang-Rui Chen Chia-Hsuan Wu Neng-Yi Chu Cheng-Chih Chou Fan-Jun Zheng |
| author_facet | Liang-Rui Chen Chia-Hsuan Wu Neng-Yi Chu Cheng-Chih Chou Fan-Jun Zheng |
| author_sort | Liang-Rui Chen |
| collection | DOAJ |
| description | Conventionally, the single-stage grid-connected PV inverter needs a large PV-side electrolytic capacitor to suppress the double-line frequency current ripple to keep the PV operating at maximum power point (MPP). However, the short lifetime electrolytic capacitor will reduce the PV inverter’s reliability dramatically. In order to overcome the above problem, a novel battery current-sharing power decoupling (BCSPD) method for hybrid photovoltaic (PV) power systems is proposed in this paper. The proposed BCSPD circuit is parallelly connected with the string PV module to achieve as a single-stage topology. Thus, a high power conversation efficiency can be obtained. The current-injection method is adapted to solve the current ripple problem. Therefore, the required capacitance in PV side can be greatly reduced, so long-life film capacitors can be used instead of electrolytic capacitors. In addition, the battery storage system with the droop control is also used to realize the power regulation function to meet the requirements of actual applications. A 1200 W prototype was designed and implemented to assess the system performance. Experimental results show that the proposed system can track MPP, regulate the load power condition, and reduce current ripple. |
| first_indexed | 2024-04-14T03:09:18Z |
| format | Article |
| id | doaj.art-48b3826bd5fe41d3b52f4840c3de89de |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-14T03:09:18Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-48b3826bd5fe41d3b52f4840c3de89de2022-12-22T02:15:39ZengIEEEIEEE Access2169-35362022-01-0110868648687310.1109/ACCESS.2022.31999259861600Battery Current-Sharing Power Decoupling Method for Realizing a Single-Stage Hybrid PV SystemLiang-Rui Chen0Chia-Hsuan Wu1https://orcid.org/0000-0003-1746-2466Neng-Yi Chu2Cheng-Chih Chou3Fan-Jun Zheng4Department of Electrical Engineering, National Changhua University of Education, Changhua, TaiwanDepartment of Industrial Education and Technology, National Changhua University of Education, Changhua, TaiwanDepartment of Electrical Engineering, National Penghu University of Science and Technology, Penghu, TaiwanDepartment of Electrical Engineering, National Changhua University of Education, Changhua, TaiwanP-DUKE Technology Company Ltd., Taichung, TaiwanConventionally, the single-stage grid-connected PV inverter needs a large PV-side electrolytic capacitor to suppress the double-line frequency current ripple to keep the PV operating at maximum power point (MPP). However, the short lifetime electrolytic capacitor will reduce the PV inverter’s reliability dramatically. In order to overcome the above problem, a novel battery current-sharing power decoupling (BCSPD) method for hybrid photovoltaic (PV) power systems is proposed in this paper. The proposed BCSPD circuit is parallelly connected with the string PV module to achieve as a single-stage topology. Thus, a high power conversation efficiency can be obtained. The current-injection method is adapted to solve the current ripple problem. Therefore, the required capacitance in PV side can be greatly reduced, so long-life film capacitors can be used instead of electrolytic capacitors. In addition, the battery storage system with the droop control is also used to realize the power regulation function to meet the requirements of actual applications. A 1200 W prototype was designed and implemented to assess the system performance. Experimental results show that the proposed system can track MPP, regulate the load power condition, and reduce current ripple.https://ieeexplore.ieee.org/document/9861600/Current-sharedmaximum power point trackingphotovoltaic power system |
| spellingShingle | Liang-Rui Chen Chia-Hsuan Wu Neng-Yi Chu Cheng-Chih Chou Fan-Jun Zheng Battery Current-Sharing Power Decoupling Method for Realizing a Single-Stage Hybrid PV System IEEE Access Current-shared maximum power point tracking photovoltaic power system |
| title | Battery Current-Sharing Power Decoupling Method for Realizing a Single-Stage Hybrid PV System |
| title_full | Battery Current-Sharing Power Decoupling Method for Realizing a Single-Stage Hybrid PV System |
| title_fullStr | Battery Current-Sharing Power Decoupling Method for Realizing a Single-Stage Hybrid PV System |
| title_full_unstemmed | Battery Current-Sharing Power Decoupling Method for Realizing a Single-Stage Hybrid PV System |
| title_short | Battery Current-Sharing Power Decoupling Method for Realizing a Single-Stage Hybrid PV System |
| title_sort | battery current sharing power decoupling method for realizing a single stage hybrid pv system |
| topic | Current-shared maximum power point tracking photovoltaic power system |
| url | https://ieeexplore.ieee.org/document/9861600/ |
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