An Operation Mode Selection Method of Dual-Side Bridge Converters for Efficiency Optimization in Inductive Power Transfer

2020 ◽  
Vol 35 (10) ◽  
pp. 9992-9997 ◽  
Author(s):  
Shuxin Chen ◽  
Yang Chen ◽  
Hongchang Li ◽  
Nguyen Anh Dung ◽  
Ruikun Mai ◽  
...  
Keyword(s):  
Mode Selection ◽  
Operation Mode ◽  
Selection Method ◽  
Power Transfer ◽  
Inductive Power Transfer ◽  
Efficiency Optimization ◽  
Inductive Power

scholarly journals Combination of Compensations and Multi-Parameter Coil for Efficiency Optimization of Inductive Power Transfer System

Energies ◽  
2017 ◽  
Vol 10 (12) ◽  
pp. 2088 ◽  
Author(s):  
Guozhen Hu ◽  
Junkun Zhang ◽  
Junhua Wang ◽  
Zhijian Fang ◽  
Changsong Cai ◽  
...  
Keyword(s):  
Transfer System ◽  
Power Transfer ◽  
Inductive Power Transfer ◽  
Efficiency Optimization ◽  
Inductive Power

scholarly journals Light-Load Efficiency Optimization for an LCC-Parallel Compensated Inductive Power Transfer Battery Charger

Electronics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2080
Author(s):  
Shuangcheng Yang ◽  
Xiangtian Deng ◽  
Jianghua Lu ◽  
Zhixuan Wu ◽  
Kai Du
Keyword(s):  
Power Converter ◽  
Constant Current ◽  
Power Transfer ◽  
Battery Charger ◽  
Battery Charging ◽  
Inductive Power Transfer ◽  
Efficiency Optimization ◽  
Charging System ◽  
Light Load ◽  
Inductive Power

Wireless power transfer (WPT) techniques have gained wide acceptance across a range of battery charging applications such as cell phones, cardiac pacemakers, and electric vehicles. In a wireless battery charging system, a constant current/constant voltage (CC/CV) charging strategy, regardless of the variation of the battery load which may roughly range from a few ohms to several hundred ohms, is typically adopted to ensure the safety, durability, and performance of the battery. However, system efficiency drops significantly as the load increases in CV mode, especially at very light-load conditions. This paper proposes an efficiency optimization method for an LCC-parallel compensated inductive power transfer (IPT) battery charging system without the help of any additional power converter and control method. The equivalent circuit and resonant conditions of the LCC-parallel compensation topology are firstly analyzed to achieve the load-independent CV output at a zero phase angle (ZPA) operating frequency. Over the full range of CV charging mode, the efficiency of the LCC-parallel resonant tank circuit is analyzed and optimized. An IPT battery charger prototype with 48 V charging voltage and 1 A charging current is implemented. A measured DC–DC transfer efficiency of greater than 90.48% is achieved during the whole CV charging profile.

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