Research On Magnetic Coupling Resonant Wireless Power Transmission System Transmission Characteristics

In recent years, more and more electronic products to emerge so that how tocharge a growing concern that too many charging equipment has become a burden,the radio can transmit as a more effective way to become a research hotspot.Magnetically coupled resonant wireless power transmission has excellenttransmission efficiency and energy distant transmission, is the internationalmainstream technology in wireless charging facilities. For magnetically coupledresonant wireless power transmission, the transmission distance of the wireless powertransmission is a big challenge, therefore, this paper based on magnetically coupledresonant transmission device radio transmission technology can be conductedin-depth research.For the characteristics of magnetically coupled resonant energy transfer, thepaper this has been improved. Analysis of the transmission mechanism of the system,the energy transfer and the criteria that should be observed, previous studies are builtfrom a single digital model formula or circuit coupled mode theory, have certaindisadvantages. To solve this problem, first, to establish the coupled mode equationsmagnetically coupled resonant radio can transmit digital model and verify itscorrectness. Then, using a digital model coupled mode equations created usingcircuit theory to establish the equivalent circuit model analysis, the ability to build adigital model of the coupled mode equations simplify the key factors affecting theenergy transfer good analysis.In the radio can transmit in order to maximize the transmission efficiency andthe principle of minimizing the size of the receiving end, we use Hilbert fractalantenna instead of the traditional circular coil, largely reducing the size of thereceiving end. On this basis, the key factors affecting energy transfer analysis, themaximum transmission efficiency.Using the above methods to transmit a simulation experiment of magneticcoupling radio transmission distance by calculation, transmission efficiency and so onseveral parameters to evaluate the system performance. Their results showed that the use of Hilbert fractal antenna in the case of reducing the size of the receiver, capableof better transmission of energy. In contrast to other magnetic resonance type wirelesspower transmission coupling, which significantly reduced the size of the receivingend, to ensure the efficiency of the transmission distance and transmission also canmeet the requirements for radio transmission.