| With the development of science and technology,all kinds of electronic equipment make people’s life more plentiful and convenient,while the traditional wire transmission is more and more difficult to meet people’s pursuit of a better life.The wireless power transmission(WPT)technology has created a new era of power supply.At present,wireless power transmission technology has been widely used in many fields,but for some special applications,which need to carry out full-duplex data signal transmission in the realization of power transmission.Firstly,the resonant compensation topology of several commonly used magnetically coupled resonant wireless power transmission(MCR-WPT)systems is analyzed in the thesis.In addition,wireless power and data transmission technology(WPDT)is further classified,the structure and working principle of common data transmission technology are detailed in detail,and the advantages and disadvantages of common data transmission mode are summarized.Another,the comparative analysis of these communication methods is made,which lays the foundation for further optimization of the power and data synchronous transmission scheme.Secondly,the dissertation proposes a new topology structure of full-duplex parallel transmission of power and data adopting the two-side LCC resonance compensation topology based on the typical MCR-WPT system structure.For the transmission of forward data,this dissertation uses frequency modulation technology to modulate the working frequency of the full-bridge inverter circuit,so as to inject the forward data into the power carrier for synchronous transmission.Moreover,the circuit modeling and analysis of the working principle are carried out,and the mathematical model analysis of the power transmission and data signal transmission is also established.In addition,ASK signal of reverse data is modulated by series MOSFET,and S-S resonance compensation topology is used by independent transmission channel to realize reverse data transmission.This effectively simplifies the complexity of the system structure,and gives expression of the power and signal transmission gain,and the working principle of the power transmission channel and signal transmission loop are analyzed theoretically.Finally,the simulation of parallel transmission of power and data is built and the scheme is verified.The experimental platform is built based on the simulation parameters to verify the feasibility of the proposed topology.The carrier frequency of wireless power transmission is 230 k Hz,and the forward data transmission rate is20 kbps,while the reverse data transmission rate is 60 kbps. |
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