Wireless power transfer system based on LCC/LCL-S variable structure with constant output power
In magnetic coupling wireless power transfer system, the relative position of power transfer coils may change during the operating condition. In order to solve the mutual inductance variation caused by the movement of coils, increase the anti-offset capability of the system to achieve constant power...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Energy Reports |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484722002803 |
| _version_ | 1811340038150029312 |
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| author | Yanjin Hou Shuyao Sun Zhizhen Liu Xiaozhao Wei Sen Qiao Guowen Feng Benhui Zhang |
| author_facet | Yanjin Hou Shuyao Sun Zhizhen Liu Xiaozhao Wei Sen Qiao Guowen Feng Benhui Zhang |
| author_sort | Yanjin Hou |
| collection | DOAJ |
| description | In magnetic coupling wireless power transfer system, the relative position of power transfer coils may change during the operating condition. In order to solve the mutual inductance variation caused by the movement of coils, increase the anti-offset capability of the system to achieve constant power output, a variable structure is proposed in this article. Build the mathematic models of LCC-S and LCL-S structures and analyze the expressions of output power and efficiency in two structures. Design the switching condition, the relationship between coupling coefficient at switching point and parameter setting of capacitor array is obtained with the same input voltage and constant output power. The coupling coefficient range is estimated by output open circuit voltage with a small-voltage input, and the controlling strategy is put forward. Analyze the efficiency of variable structure and build the loss model. It is proved that the switching and input harmonic loss can be reduced by using LCC/LCL-S structure, while the transfer efficiency can be improved through the structure switching between two structures. The simulation results show that the variable structure can effectively reduce the variation range of input voltage and decrease the total harmonic distortion (THD) of input voltage by 46.6%, and keep THD of input current small in a wide range of coupling coefficient. |
| first_indexed | 2024-04-13T18:36:24Z |
| format | Article |
| id | doaj.art-ace781370b4f4bddb8fd0cda762c60d2 |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-04-13T18:36:24Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-ace781370b4f4bddb8fd0cda762c60d22022-12-22T02:34:53ZengElsevierEnergy Reports2352-48472022-07-018850862Wireless power transfer system based on LCC/LCL-S variable structure with constant output powerYanjin Hou0Shuyao Sun1Zhizhen Liu2Xiaozhao Wei3Sen Qiao4Guowen Feng5Benhui Zhang6School of Electrical Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, China; Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Keyuan Road 19, Jinan 250014, ChinaSchool of Electrical Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, ChinaSchool of Electrical Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, China; Corresponding author.State Grid Henan Electric Power Research Institute, Songshan Road 87, Zhengzhou 450052, ChinaSchool of Electrical Engineering, Henan Mechanical and Electrical Vocational College, Taishan Road 1, Zhengzhou 451191, ChinaSchool of Electrical Engineering, Shandong University, Jingshi Road 17923, Jinan 250061, ChinaQilu University of Technology, Daxue Road 3501, Jinan 250306, ChinaIn magnetic coupling wireless power transfer system, the relative position of power transfer coils may change during the operating condition. In order to solve the mutual inductance variation caused by the movement of coils, increase the anti-offset capability of the system to achieve constant power output, a variable structure is proposed in this article. Build the mathematic models of LCC-S and LCL-S structures and analyze the expressions of output power and efficiency in two structures. Design the switching condition, the relationship between coupling coefficient at switching point and parameter setting of capacitor array is obtained with the same input voltage and constant output power. The coupling coefficient range is estimated by output open circuit voltage with a small-voltage input, and the controlling strategy is put forward. Analyze the efficiency of variable structure and build the loss model. It is proved that the switching and input harmonic loss can be reduced by using LCC/LCL-S structure, while the transfer efficiency can be improved through the structure switching between two structures. The simulation results show that the variable structure can effectively reduce the variation range of input voltage and decrease the total harmonic distortion (THD) of input voltage by 46.6%, and keep THD of input current small in a wide range of coupling coefficient.http://www.sciencedirect.com/science/article/pii/S2352484722002803Variable structureLCC-SLCL-SConstant output powerAnti-offsetLoss model |
| spellingShingle | Yanjin Hou Shuyao Sun Zhizhen Liu Xiaozhao Wei Sen Qiao Guowen Feng Benhui Zhang Wireless power transfer system based on LCC/LCL-S variable structure with constant output power Energy Reports Variable structure LCC-S LCL-S Constant output power Anti-offset Loss model |
| title | Wireless power transfer system based on LCC/LCL-S variable structure with constant output power |
| title_full | Wireless power transfer system based on LCC/LCL-S variable structure with constant output power |
| title_fullStr | Wireless power transfer system based on LCC/LCL-S variable structure with constant output power |
| title_full_unstemmed | Wireless power transfer system based on LCC/LCL-S variable structure with constant output power |
| title_short | Wireless power transfer system based on LCC/LCL-S variable structure with constant output power |
| title_sort | wireless power transfer system based on lcc lcl s variable structure with constant output power |
| topic | Variable structure LCC-S LCL-S Constant output power Anti-offset Loss model |
| url | http://www.sciencedirect.com/science/article/pii/S2352484722002803 |
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