Principles and Optimization of Wireless Energy Transmission Technology

Abstract

Wireless energy transmission technology through the transmitter will be converted into microwave, laser or electromagnetic field and other energy carriers to realize the transmission of space, and the receiver will be captured back to the energy conversion of electrical energy, the whole process can be completed without physical contact energy transfer. The core mechanism is to build the energy coupling channel of the transmitter-receiver system, and realize the spatial power transmission through electromagnetic field interaction. In the electromagnetic induction coupled transmission system, the industrial frequency alternating current is converted into direct current by rectification and filtering, and then converted into high-frequency alternating current by high-frequency inverter. This current excites the primary side transmitting winding to generate a time-varying magnetic field, and through magnetic coupling in the secondary side receiving winding inductance electromotive force, and ultimately through the high-frequency rectifier and power regulation circuit to the load power supply. The essence of the process is to establish a transceiver double-ended resonant network, through the magnetic field resonance to achieve efficient energy exchange, and its transmission characteristics follow the laws of electromagnetic induction and the circuit resonance principle of double constraints.