| Magnetically-coupled resonant wireless power transfer(MCR-WPT)has the advantages of getting rid of the shackles of wire,high transmission efficiency,safety and reliability.In recent years,this technology has rapidly become one of the research focus of researchers at home and abroad.At present,the research of WPT is mainly focused on high-power applications.In this dissertation,the application of MCR-WPT system in rocket are deeply studied.A method of wireless power supply between rocket and ground is presented,and the simulation and experiment research are carried out.Using this method,power can be transmitted stably with high transmission efficiency between rocket and ground.Firstly,the equivalent circuit of MCR-WPT topology of SS are analyzed by use of mutual inductance model.The full-bridge inverter circuit is selected and analyzed.A high-frequency power supply method with four devices in parallel for ground and rocket power transmission is proposed.A spiral coil is selected and designed based on the limitation.And then a optimized design method for the apiral coil from the diameter and turns is proposedSecondly,the influence of ground and rocket WPT system on the sensitive devices at different positions of rocket is analyzed.The influence of the system on human body and devices around at different distances is deeply studied.In order to reduce the influence of the WPT system on the surrounding devices,a method of add metal plate to control the electromagnetic field is proposed.The optimal scheme of electromagnetic field regulation is obtained by the simulation analysis.Finally,the experimental setup based on full-bridge inverter circuit,the compensated topology of SS,and an optimal design of spiral resonators is built.The conclusions that system with SS structure output the constant current and increasing the frequency can increase the transmission power.The transmission characteristics of ground and rocket WPT system and the design are verified experimentally. |
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