Xiaojuan CHEN, Min JIA, Mingchen LI. Coil Offset Based Wireless Power Transfer System Parameter Optimization[J]. Electric power, 2021, 54(7): 125-131.
DOI:
Xiaojuan CHEN, Min JIA, Mingchen LI. Coil Offset Based Wireless Power Transfer System Parameter Optimization[J]. Electric power, 2021, 54(7): 125-131. DOI: 10.11930/j.issn.1004-9649.202101040.
Coil Offset Based Wireless Power Transfer System Parameter Optimization
In a magnetic coupling resonant wireless power transmission system
the relative position of the system coil is one of the main factors affecting its transmission performance. This article focuses on the efficiency loss caused by the offset of the coil in the traditional power transmission system
and proposes a Firefly algorithm based parameter design method to optimize the efficiency of the coil when placed non-coaxially. Firstly
the analysis of the mutual inductance of the coil at different positions is carried out
and then the bilateral LCC topology is applied to examine its transmission performance. The parameters optimization is carried out using the firefly algorithm
and finally the effectiveness of the method is verified through a finite element simulation and experimental platform. The results show that when the offset distance is less than the radius of the coil
the transmission efficiency of the system can maintain more than 85%
which is similar to the traditional SS topology of WPT. In comparison
the transmission efficiency of the optimized system is increased by an average of 20%
and the received power of the load remains at about 20 W.
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references
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