Extensible low-profile Coplanar Wireless Power transfer system for multi-load applications with load-independence constant current output

2021 ◽  
pp. 1-1
Author(s):  
Bin Luo ◽  
Dongya Ma ◽  
Wangjun Han ◽  
Jun Liu
Keyword(s):  
Wireless Power Transfer ◽  
Constant Current ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Current Output ◽  
Low Profile ◽  
Wireless Power Transfer System

scholarly journals An LCC-P Compensated Wireless Power Transfer System with a Constant Current Output and Reduced Receiver Size

Energies ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 172 ◽  
Author(s):  
Zhengchao Yan ◽  
Yiming Zhang ◽  
Baowei Song ◽  
Kehan Zhang ◽  
Tianze Kan ◽  
...  
Keyword(s):  
Autonomous Underwater Vehicles ◽  
Wireless Power Transfer ◽  
Constant Current ◽  
Power Transfer ◽  
Wireless Power ◽  
Research Focus ◽  
Peak Efficiency ◽  
Current Output ◽  
Conduction Loss ◽  
Wireless Power Transfer System

Wireless Power Transfer (WPT) for autonomous underwater vehicles (AUVs) has been a research focus in recent years. This paper studies the inductor-capacitor-capacitor and parallel (LCC-P) compensation topology to achieve a compact receiver for AUVs. Unlike the series-series (SS) compensation topology, the LCC-P topology retains the advantages of the double-sided LCC topology and has a more compact receiver than the double-sided LCC topology with fewer elements used on the receiver side. The analytical model of such a WPT system is established to analyze the output power and transfer efficiency. The LCC-P topology has a higher efficiency compared to the SS topology due to the smaller conduction loss of the inverter. Moreover, a method of eliminating the DC filter inductor L0 is proposed to further decrease the size and weight of the receiver. The amplitude of the withstanding voltage on the receiver compensation capacitor without L0 is approximately decreased by 40% compared to that with L0. Both cases of with and without L0 have a constant current output and the peak efficiency without L0 is about 94%, which is 1% lower than that with L0. A prototype was built and the experimental results verified the theoretical analysis.

scholarly journals A Direct Three-Phase AC–AC Matrix Converter-Based Wireless Power Transfer System for Electric Vehicles

2020 ◽  
Vol 10 (7) ◽  
pp. 2217
Author(s):  
Rutian Wang ◽  
Min Huang ◽  
Chongyi Lu ◽  
Weiquan Wang
Keyword(s):  
Electric Vehicles ◽  
Full Range ◽  
Wireless Power Transfer ◽  
Matrix Converter ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Current Output ◽  
Three Phase ◽  
Wireless Power Transfer System

For the bidirectional wireless power transfer system of electric vehicles, the topology proposed in this paper includes a direct three-phase AC–AC matrix converter as the pre-stage main circuit, a bilateral inductor–capacitor–capacitor–inductor (LCCL) as the resonance compensation network, and a full-bridge converter as the latter stage circuit. According to the characteristics of the system topology, a new control strategy is proposed based on the de-re-coupling method. The control principle of the coordination work of the scheme is expounded, and the corresponding switch combination logic is designed. According to the three-phase voltage amplitude relationship at different stages, combined with the resonant frequency, the switch arms of the matrix converter are alternately controlled separately. The number of switching operations is reduced, the system efficiency and safety are improved, and the full range of soft switching operations of the converter is realized. The theoretical analysis of the bilateral LCCL resonance compensation network is carried out, and its constant voltage/current output characteristic and high power factor transmission characteristic are obtained. Finally, the effectiveness and feasibility of the bidirectional wireless power transfer system for electric vehicles proposed in this paper are verified by simulation analysis.

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