磁共振无线电力传输发射系统的研究与设计

发布时间：2018-04-28 17:25

本文选题：无线电力传输 + 磁共振　；参考：《河北大学》2014年硕士论文

【摘要】：无线电力传输技术作为二十一世纪最热门的技术之一，逐渐进入人们的日常生活。磁共振无线电力传输技术因其在中距离上能高效率的传输电能，吸引了大量相关科研人员进行研究与探索。本文主要介绍了磁共振耦合无线电力传输技术并且设计了发射模块。该技术是利用发射线圈的固有谐振频率和接收线圈的固有谐振频率一致时引起电磁共振，发生强电磁耦合实现电能的传输，主要用于电能的中距离无线传输，而且效率较高。本文在设计发射线圈时采用了螺旋线圈，该线圈通常用于信号的定向传输。根据螺旋线圈的物理参数（匝数、线圈直径等）和电气参数（电感、频率等）之间的关系，设计了几组螺旋线圈，并对线圈的电气性能进行测试。实验证明所设计的线圈具有较好的方向性。利用16MHz有源晶振和SN74HC740D触发器设计了方波发生电路，为E类功放提供控制信号。为了实现工频电源转化为射频电源，本文设计了一种高效的电压驱动E类功率放大器。与传统的功率放大器相比效率较高，，能有效的提高整个发射模块的传输效率。
[Abstract]:Wireless power transmission technology, as one of the most popular technologies in the 21 century, has gradually entered people's daily life. Magnetic resonance wireless power transmission technology attracts a large number of researchers to research and explore because of its high efficiency in transmitting electric energy in middle distance. This paper mainly introduces the magnetic resonance coupled wireless power transmission technology and designs the transmission module. When the inherent resonance frequency of the transmitting coil and the natural resonant frequency of the receiving coil are the same, the electromagnetic resonance (Mr) is induced, and the electric energy is transmitted by strong electromagnetic coupling, which is mainly used for the wireless transmission of electric energy over middle distance, and the efficiency is high. In this paper, a spiral coil is used to design the transmitting coil, which is usually used for directional transmission of signal. According to the relationship between the physical parameters (turn number, coil diameter, etc.) and electrical parameters (inductance, frequency, etc.), several groups of helical coils are designed, and the electrical properties of the coils are tested. The experimental results show that the designed coil has good directionality. Square wave generating circuit is designed by using 16MHz active crystal oscillator and SN74HC740D flip-flop to provide control signal for class E power amplifier. In order to realize the conversion of power frequency power supply to radio frequency power supply, this paper designs an efficient class E power amplifier driven by voltage. Compared with the traditional power amplifier, the transmission efficiency of the whole transmission module can be improved effectively.
【学位授予单位】：河北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM724

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