Research on Power Control Method of Zero-voltage Soft-switching Wireless Charging System

2020 ◽  
Author(s):  
Yingqiu Wang ◽  
Shaoxiong Li ◽  
Rui He ◽  
Xiaoou Cao ◽  
Zexin Yang ◽  
...  
Keyword(s):  
Power Control ◽  
Control Method ◽  
Soft Switching ◽  
Wireless Charging ◽  
Charging System ◽  
Zero Voltage

scholarly journals Maximising transferred power and preserving zero voltage switching in grid to vehicle and vehicle to grid modes of a wireless charging system

2020 ◽  
Vol 10 (2) ◽  
pp. 196-203
Author(s):  
Jean‐Paul Ferrieux ◽  
Gatien Kwimang ◽  
Gérard Meunier ◽  
Benoit Sarrazin ◽  
Alexis Derbey ◽  
...  
Keyword(s):  
Wireless Charging ◽  
Vehicle To Grid ◽  
Zero Voltage Switching ◽  
Charging System ◽  
Zero Voltage ◽  
Voltage Switching

scholarly journals Wireless charging system for electric bicycle application

2020 ◽  
Vol 11 (4) ◽  
pp. 1926
Author(s):  
Nguyen Thi Diep ◽  
Nguyen Kien Trung ◽  
Tran Trong Minh
Keyword(s):  
High Efficiency ◽  
Control Method ◽  
Constant Current ◽  
Wireless Charging ◽  
Load Impedance ◽  
Simple Method ◽  
Charging System ◽  
Current Voltage ◽  
Electric Bicycle ◽  
Charging Mode

This paper presents a design of the wireless charging system for e-byke applications. The double-side LCC compensation circuit is used to achieve high efficiency and reduce the volt-ampere rating. A new constant current/voltage (CC/CV) charging control method at the transmitter side is proposed to avoid dual side wireless communication. This paper also presents a simple method of estimating both the coupling coefficient and load impedance only from the transmitter side. A wireless charging system of 2.5kW is built. Error in the CC/CV charging mode is 3.3% and 1.12%, respectively. System efficiency reaches 92.1% in CC charging mode.

scholarly journals Constant-Current and Constant-Voltage Output for Single-Switch WPT System with Composite Shielding Structure

2021 ◽  
Vol 13 (1) ◽  
pp. 13
Author(s):  
Quanlei Zhang ◽  
Chunfang Wang ◽  
Lingyun Yang ◽  
Zhihao Guo
Keyword(s):  
Shielding Effect ◽  
Constant Current ◽  
Maximum Efficiency ◽  
Wireless Charging ◽  
Constant Voltage ◽  
Wireless Power ◽  
Zero Voltage Switching ◽  
Charging System ◽  
The Stability ◽  
Zero Voltage

With the development of wireless power transfer (WPT), the wireless charging has become a research hotspot. This paper proposes a novel single-switch hybrid compensation topology, which can change the compensation network to realize the constant-current (CC) and constant-voltage (CV) output. The zero voltage switching (ZVS) margin can be designed to increase the stability of the system. In addition, the magnetic coupler adopts a composite shielding structure composed of ferrite, nanocrystalline, and aluminium foil. The composite shielding structure has a better shielding effect on magnetic flux leakage, and its weight is lighter. The composite shielding structure is expected to be used in the wireless charging system of electric vehicles (EVs). Finally, an experimental prototype is built to verify the theoretical analysis, and the maximum efficiency can reach 91.4%.

Power Control of Wireless Charging System Using GPS Signal for Moving Electric Vehicle

2020 ◽  
Vol 45 (2) ◽  
pp. 383-388
Author(s):  
Hyo-min Kim ◽  
Yong-joon Song ◽  
Yu-jin Sim ◽  
Gu-ho Jung ◽  
Dong-ho Cho
Keyword(s):  
Power Control ◽  
Electric Vehicle ◽  
Wireless Charging ◽  
Charging System

scholarly journals Primary Control Method of Wireless Charging System Based on Load Characteristics

Energies ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1269 ◽  
Author(s):  
Guodong Chen ◽  
Chao Rao ◽  
Yue Sun ◽  
Zhenxin Chen ◽  
Chunsen Tang ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Control Method ◽  
Lithium Ion ◽  
Input Voltage ◽  
Constant Current ◽  
Primary Control ◽  
Wireless Charging ◽  
Charging System ◽  
Equivalent Load ◽  
Secondary Side

Aiming at the output control issues of a lithium ion battery wireless charging system, a primary side control method based on load characteristic identification is proposed. The primary side impedance is calculated by detecting the effective value of the primary side voltage and current, and the mapping relationship between the equivalent load and the primary side impedance is established based on the AC impedance model. Using this mapping relation, the output of the secondary side can be regulated indirectly by controlling the input voltage of the inverter. Compared with the traditional control methods, the proposed control method not only eliminates the communication requirement between the primary side and secondary side, but also simplifies the hardware circuit design, reduces the complexity of the control circuit and also reduces the volume and cost of the system. In the paper, the impedance characteristics of the lithium ion battery at constant current and constant voltage stage are analyzed. The principle of the primary side control method is expounded and the realization method is given. The feasibility of the proposed control method is verified by simulation and experiment.

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