Research On The Resonator Array Of Wireless Power Transfer Based On Magnetically-coupled Resonant

Magnetic coupling resonance wireless power transfer is a kind of new technology which can realize wireless power transfer with a moderate distance. The transmission distance of MCR-WPT is further than that of induction coupling radio transmission, and its electromagnetic security is higher than the radiant radio transmission. With the development of wireless power transfer technology, the application prospect of MCR-WPT is more and more significant, such as household appliances, medical, transportation and other fields.The resonator array based on MCR-WPT is investigated in this article, and the main research contents are:(1) Three kinds of MCR-WPT theory is analyzed, i. e, the coupled-mode theory, circuit theory and filter theory, and then promote them to the scene where more coil exist at the same time.(2) A method which matches at the load end is proposed to ensure that the load can obtain maximum power and eliminate the influence of primary and secondary coil detuning on the system. Then consider the system with three coils, a simple method with additional reactance is proposed in the circuit to compensation the effect which comes from the cross coupling, and it is verified by experiment.(3) A kind of flexible resonator array structure is proposed, and the self inductance formula and mutual inductance formula of resonator array is deduced. When the number of load is different, the transmission power formula and efficiency formula is deduced, and it is verified by the simulation software.(4) According to the experiment requirement, the wireless power transfer system platform which contains resonator arrays is built, and the WPT system can make the mobile wireless charging and light several bulbs at the same time.