Parametric Sensitivity Analysis of Undersea Wireless Power Transfer Circuits

WANG Huanmin; LI Mingjun; ZHANG Hui

doi:10.3969/j.issn.1672-9730.2025.08.015

Abstract：Undersea radio energy transmission technology has the advantages of safety,reliability and wireless mechanical wear,and has good market application development prospects.In recent years,it has attracted widespread attention from scholars.Circuit parameter sensitivity is the main factor affecting the transmission of high-power and high-efficiency radio energy.This paper takes the S-P resonant compensation network as the research goal,constructs a loosely coupled transformer mutual induction(M)model,and theoretically calculates the output power and transmission efficiency.The simulation studies the external characteristics of circuit output current and transmission efficiency when parameters such as circuit mutual inductance,transmission distance,equivalent impedance and resonant capacitance sensitivity change.The analysis finds that changes in parameters such as equivalent load,operating frequency,transmission distance and mutual inductance have a great impact on output power and transmission effi-ciency.Simulation and experiments verify that the resonant capacitance error sensitivity makes the transmission efficiency have a large deviation from the expected value.In order to verify the effectiveness of theoretical analysis,this study constructs a low-power wireless transmission experimental device.It is found that under the complete resonance of the circuit,the radio energy transmission efficiency reached 64.8％.The circuit parameter sensitivity analysis in this paper provides a theoretical reference for the design and parameter optimization of the undersea radio energy transmission system,and provides a theoretical basis for high-power and high-efficiency radio energy transmission.