Theoretical Analysis of Power Transfer Performance of Primary and Secondary Compensation Topology of Inductive Coupled Power Transfer System

2012 ◽  
Vol 529 ◽  
pp. 43-48
Author(s):  
Xu Zhang ◽  
Guo Ying Meng
Keyword(s):  
Electromagnetic Induction ◽  
Transfer Efficiency ◽  
Current Gain ◽  
Transfer System ◽  
Voltage Gain ◽  
Power Transfer ◽  
Leakage Inductance ◽  
Loosely Coupled ◽  
Power Transfer Efficiency ◽  
Secondary Side

Inductive coupled power transfer system is based on the principle of electromagnetic induction to transfer power from the primary side to the secondary side of a loosely coupled transformer, which can transfer electricity wirelessly. The loosely coupled transformer has large leakage inductance, which reduces the power transfer efficiency. In order to reduce the leakage inductance, a capacitance is used at the primary side and secondary side of a loosely coupled transformer, which can increase the power transfer efficiency. For four different compensation structures, this paper analyses the coupling coefficient and the secondary quality factor’s influence on the voltage gain, current gain and transfer efficiency, and also compares different compensation structures

scholarly journals Tuning of a wireless power transfer system with a hybrid capacitor array

2016 ◽  
Vol 3 (1) ◽  
pp. 9-14
Author(s):  
Nurcan Keskin ◽  
Huaping Liu
Keyword(s):  
Resonant Frequency ◽  
Hybrid Model ◽  
Wireless Power Transfer ◽  
Transfer System ◽  
Power Transfer ◽  
Wireless Power ◽  
Loosely Coupled ◽  
Capacitor Array ◽  
Power Transfer Efficiency ◽  
Wireless Power Transfer System

Power transfer efficiency in loosely coupled inductive systems can be enhanced by resonance. Primary and secondary can be tuned to same resonant frequency. In this paper, MOSFET-based Varactors and switchable capacitors are used for re-tuning of such a system at 13.56 MHz. This is achieved either using each cap structure alone or as a hybrid model. These techniques are designed for 13.56 MHz wireless power transfer system.

scholarly journals Numerical Study of Non-Radiating Near-Field Wireless Power Transfer System

2021 ◽  
Vol 2015 (1) ◽  
pp. 012170
Author(s):  
E Zanganeh ◽  
M Song ◽  
M Korobkov ◽  
A Evlyukhin ◽  
A Miroshnichenko ◽  
...  
Keyword(s):  
Magnetic Dipole ◽  
Near Field ◽  
Wireless Power Transfer ◽  
Transfer Efficiency ◽  
Transfer System ◽  
Dipole Mode ◽  
Power Transfer ◽  
Wireless Power ◽  
Power Transfer Efficiency ◽  
Wireless Power Transfer System

Abstract The main challenge in near-field wireless power transfer systems is the increase of power transfer efficiency. It can be achieved by reducing ohmic or radiation losses of the resonators included in the system. In this paper, we propose and investigate numerically a non-radiating near-field wireless power transfer system based on transmitter and receiver implemented as dielectric disk resonators. The transmitter and receiver geometrical parameters are numerically optimized to operate at the frequency of non-radiating state of high refractive index dielectric resonators instead of magnetic dipole mode. Under the non-radiating state, we determine the frequency with almost zero radiation to the far-field. We numerically study the wireless power transfer efficiency as a function of operation distance between the transmitter and receiver and demonstrate that the higher efficiency compared to magnetic dipole mode can be achieved at non-radiating state for a fixed distance due to suppression of the radiation loss.

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