Experiment Research On Wireless Power Transfer Via Strongly Coupled Magnetic Resonances

Wireless energy transfer via strongly coupled magnetic resonances is an innovational non-contact technology method for electrical power transferring, which utilizes the physical characteristics of electromagnetic induction and coupled magnetic resonances to achieve efficient transmission of energy. This technology has many advantages such as big transmission power, high transmission efficiency, long transmission distance, strong penetrability, and impact on the environment is very small. Therefore, the research on the strongly coupled magnetic resonances method has important research value and practical value. Thus, it attracts a wide attention from both the academic circles and the industrial circles.First, this paper briefly introduced the basic structure of wireless energy transfer via strongly coupled magnetic resonances system, analyzed the main part and the basic principles of the theory, and finished the design of hardware circuit. Then based on the theory of circuit modeled the wireless energy transfer via strongly coupled magnetic resonances system when transmitting coil in series compensation structure and the receiver coil in series and parallel compensation structure, analyzed and reached the influence of the load resistance, the resonant frequency, the impact of transmitting and receiving coil parameters on the received power. Then control variable method was used to carry out experiments and research on the influence of the load resistance, resonance frequency, transmitting and receiving coil on the received power. To seek to transmission power method in a long distance, put forward two solutions: one is to join enhance coil; another is to optimize the structure of coil. Analyzed these two methods and compare it to the old design and shows its efficiency.