| Wireless power transfer(WPT) technology has the advantages of security, flexibility, high reliability, easy maintenance and strong environmental affinity, and it is voted as one of the most influential invention of the world in 2014 by Time magazine.This paper study on the problem of energy and signal transmission through the same coupling coils. The pure energy wireless transmission cannot meet the system requirements, especially in some specific applications, such as oil drilling platform, or artificial heart communication occasions. It is very necessary to add signal wireless transmission function. It is better to use the energy transmission coupling coils to achieve signal transmission. The complexity of the coupling mechanism is simplified, and the reliability of system is improved. The research content of this article is conducive to promoting the application of wireless power transfer technology.As for the implementation of energy and signal time-division transmission technology in ICPT system based on multiplexing of coupling coils. This paper mainly analyses on principle of ICPT system working characteristic, and the existing ICPT system energy and signal synchronous transmission circuit topology is analyzed. The resonance current phase characteristic of basic compensation circuit in ICPT system is analyzed. The circuit topology which is suitable for energy and signal time-division transmission technology in ICPT system based on multiplexing of coupling coils is given in this paper..On the basis of chosen SN topology circuit of ICPT system, the working principle of the topology is analyzed. And its mathematical model is established. Using the stroboscopic map modeling method and the cycle of the fixed point theory, the soft-switching work cycle calculation method of the SN circuit topology of ICPT system is given.The influence of the signal transmission to energy transmission in the process of signal transmission is analyzed. And the calculation method of influence degree is given. The energy transmission time and energy transmission time effect on the signal transmission rate is analyzed, and its calculation method is given.The simulation model of energy and signal time-division transmission technology in ICPT system based on multiplexing of coupling coils is established. The simulation results is analyzed. Based on the results of simulation, experiment circuit is designed, energy and signal time-division transmission technology in ICPT system based on multiplexing of coupling coils is realized. The experiment proves the feasibility of energy and signal time-division transmission technology. |
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