DOU Zhifeng, ZHAO Chongyan, HE Shuaibiao and et al. Optimization of constant power transmission efficiency for wireless power transfer system with SiC dual full bridges[J]. Journal of Light Industry, 2019, 34(1): 94-100. doi: 10.3969/j.issn.2096-1553.2019.01.013
Citation:
DOU Zhifeng, ZHAO Chongyan, HE Shuaibiao and et al. Optimization of constant power transmission efficiency for wireless power transfer system with SiC dual full bridges[J]. Journal of Light Industry, 2019, 34(1): 94-100.
doi:
10.3969/j.issn.2096-1553.2019.01.013
Optimization of constant power transmission efficiency for wireless power transfer system with SiC dual full bridges
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College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
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Received Date:
2018-06-28
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Abstract
Aiming at the problem of transmission efficiency change in the wireless power transfer system constant power transmission under different loads, by establishing the SiC dual full bridge wireless power transfer system model, the corresponding relationships between the primary side voltage angle and the transmission power, the secondary side voltage angle and the transmission efficiency were deduced, and the optimization of the constant power transmission efficiency was studied.The results showed that under the condition of variable load, the equivalent load was optimized by adjusting the secondary side voltage angle to maximize the transmission efficiency. The experimental comparison between the dual full bridge structure and the uncontrolled rectifier structure proved that the dual full bridge structure could significantly improve the transmission efficiency. The efficiency was increased by 19% when the transmission power was 100 W at the load of 30 Ω.
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Proportional views
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