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JPE, Vol. 19, No. 5, September 2019
Analysis of Key Parameters for Inductively Coupled Power Transfer Systems Realized by Detuning Factor in Synchronous Generators
Jinfeng Liu, Kun Li, Ningzhi Jin, and Herbert Ho-Ching Iu
Area Low Power Converters
Abstract In this paper, a detuning factor (DeFac) method is proposed to design the key parameters for optimizing the transfer power and efficiency of an Inductively Coupled Power Transfer (ICPT) system with primary-secondary side compensation. Depending on the robustness of the system, the DeFac method can guarantee the stability of the transfer power and efficiency of an ICPT system within a certain range of resistive-capacitive or resistive-inductive loads. A MATLAB-Simulink model of a ICPT system was built to assess the systemí»s main evaluation criteria, namely its maximum power ratio (PR) and efficiency, in terms of different approaches. In addition, a magnetic field simulation model was built using Ansoft to specify the leakage flux and current density. Simulation results show that both the maximum PR and efficiency of the ICPT system can reach almost 70% despite the severe detuning imposed by the DeFac method. The system also exhibited low levels of leakage flux and a high current density. Experimental results confirmed the validity and feasibility of an ICPT system using DeFac-designed parameters.
Keyword Detuning factor,Efficiency,ICPT,Resonant compensation,Rotary transformer,Transfer power
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