High Efficiency Variable-Frequency Full-Bridge Converter with a Load Adaptive Control Method Based on the Loss Model
In this paper, a load adaptive control method to improve the efficiency and dynamic performance of the Phase-Shifted Full-Bridge (PSFB) converter which works under a wide range of load conditions is presented. The proposed control method can be used as a battery charger since this application demand...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-04-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/8/4/2647 |
| _version_ | 1828393766965215232 |
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| author | Lei Zhao Haoyu Li Yuan Liu Zhenwei Li |
| author_facet | Lei Zhao Haoyu Li Yuan Liu Zhenwei Li |
| author_sort | Lei Zhao |
| collection | DOAJ |
| description | In this paper, a load adaptive control method to improve the efficiency and dynamic performance of the Phase-Shifted Full-Bridge (PSFB) converter which works under a wide range of load conditions is presented. The proposed control method can be used as a battery charger since this application demands a wide range of load conditions. The composition of the PSFB converter’s losses and the loss analysis model are both discussed. According to this model, the optimum switching frequency which results in minimum power loss is adopted to improve the efficiency. The relationship between switching frequency and power loss is formulated over a wide load range. Indicated by this kind of relationship, the proposed controller adjusts the switching frequency at different load currents. Moreover, an adaptive gain adjustment controller is applied to replace the traditional controller, with the aim to improve the dynamic performance which is influenced by the changes of the switching frequency and load current. In addition, the experimental results show that the maximum improvement of efficiency is up to 20%. These results confirm the effectiveness of the proposed load adaptive control method. |
| first_indexed | 2024-12-10T07:44:15Z |
| format | Article |
| id | doaj.art-0ee35c90191f442c87c8826ebcd4aa1e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-12-10T07:44:15Z |
| publishDate | 2015-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-0ee35c90191f442c87c8826ebcd4aa1e2022-12-22T01:57:13ZengMDPI AGEnergies1996-10732015-04-01842647267310.3390/en8042647en8042647High Efficiency Variable-Frequency Full-Bridge Converter with a Load Adaptive Control Method Based on the Loss ModelLei Zhao0Haoyu Li1Yuan Liu2Zhenwei Li3School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, ChinaIn this paper, a load adaptive control method to improve the efficiency and dynamic performance of the Phase-Shifted Full-Bridge (PSFB) converter which works under a wide range of load conditions is presented. The proposed control method can be used as a battery charger since this application demands a wide range of load conditions. The composition of the PSFB converter’s losses and the loss analysis model are both discussed. According to this model, the optimum switching frequency which results in minimum power loss is adopted to improve the efficiency. The relationship between switching frequency and power loss is formulated over a wide load range. Indicated by this kind of relationship, the proposed controller adjusts the switching frequency at different load currents. Moreover, an adaptive gain adjustment controller is applied to replace the traditional controller, with the aim to improve the dynamic performance which is influenced by the changes of the switching frequency and load current. In addition, the experimental results show that the maximum improvement of efficiency is up to 20%. These results confirm the effectiveness of the proposed load adaptive control method.http://www.mdpi.com/1996-1073/8/4/2647adaptive controllerloss analysis modeloptimum switching frequencyvariable frequencywide load range |
| spellingShingle | Lei Zhao Haoyu Li Yuan Liu Zhenwei Li High Efficiency Variable-Frequency Full-Bridge Converter with a Load Adaptive Control Method Based on the Loss Model Energies adaptive controller loss analysis model optimum switching frequency variable frequency wide load range |
| title | High Efficiency Variable-Frequency Full-Bridge Converter with a Load Adaptive Control Method Based on the Loss Model |
| title_full | High Efficiency Variable-Frequency Full-Bridge Converter with a Load Adaptive Control Method Based on the Loss Model |
| title_fullStr | High Efficiency Variable-Frequency Full-Bridge Converter with a Load Adaptive Control Method Based on the Loss Model |
| title_full_unstemmed | High Efficiency Variable-Frequency Full-Bridge Converter with a Load Adaptive Control Method Based on the Loss Model |
| title_short | High Efficiency Variable-Frequency Full-Bridge Converter with a Load Adaptive Control Method Based on the Loss Model |
| title_sort | high efficiency variable frequency full bridge converter with a load adaptive control method based on the loss model |
| topic | adaptive controller loss analysis model optimum switching frequency variable frequency wide load range |
| url | http://www.mdpi.com/1996-1073/8/4/2647 |
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