无线电能传输系统高频同步整流电路设计 毕业设计 .doc

CHANGSHA UNIVERSITY OF SCIENCE TECHNOLOGY 毕业设计（论文） 题目：无线电能传输系统高频同步整流电路设计 无线能量传输系统高频同步整流电路设计 摘要 传统接触式能量传输系统主要通过导线进行能量传输。在传输过程中，由于插头和插座的接触摩擦而产生火花，在有些场所（如石油、化工企业）很容易产生危险。实现供电系统与电气设备之间没有导体接触，自然成为电能传输的重要研究方向之一，即无线电能传输技术。 ABSTRACT Traditional contact energy transmission system mainly through a wire carrying energy transmission.In the transmission process, because the plugs and receptacles contact friction and produce sparks, and in some places (such as oil, chemical enterprise) is very easy to produce the danger. Realize the power supply system and electrical equipment no contact between a conductor, naturally becomes an important research direction of power transmission, that is wireless transmission technology. The wireless energy transmission circuit can be divided into two parts of transmitter and receiver.Provide DC power supply, through the DC-AC conversion unit, conversion for high frequency alternating current to provide the original edge inductance.Deputy edge inductance receive energy rectification of filter into the direct current.Among them the traditional way is through the rectifier diode rectifier circuit, but rectifier diode conduction pressure drop is higher.Fast recovery rectifiers (FRD) or super fast diode (SRD) is about 1.0~1.2V, even if the schottky diodes (SBD), also can produce 0.6V pressure drop, rectifier loss is bigger, circuit efficiency is lower.Using the MOSFET of low conduction impedance for rectification can greatly reduce the loss and improve the efficiency of the converter.It is an effective way.Using power MOSFET as synchronous rectifier, requires the grid driving voltage phase and the rectifier voltage phase of MOSFET keep synchronization to complete rectifier function, therefore, the use of power MOSFET rectifier technology, known as synchronous rectifier technology. This paper focuses on the analysis of the technology of synchronous rectifier topological structure and drive technology, combined with