基于磁定位檢測技術的電動汽車動態(tài)無線供電系統(tǒng)控制研究
[Abstract]:Dynamic wireless charging technology is an effective way to solve the problems of heavy body, short life and difficult charging of electric vehicle. The position of electric vehicle, the real-time control of launch coil switch and system condition monitoring are important parts of this technology. Based on the investigation of the development of wireless charging technology for electric vehicles, the basic principle of dynamic wireless charging is briefly analyzed in this paper. This paper introduces the basic structure of dynamic wireless charging system of electric vehicle from ground equipment and vehicle equipment respectively. In the ground equipment system, in addition to the high frequency power supply, there are also a series of discrete emission coils laid along the road surface of electric vehicles. These coils are equivalent to direct power supply to electric vehicles, so-called dynamic, which is to turn on and off the launching coils before and after the position of the electric vehicles in real time. The location detection of electric vehicle is one of the difficulties in realizing dynamic wireless charging. In this paper, several technologies that can realize vehicle positioning are listed, and magnetic location detection technology is compared and selected. Based on the magnetic nail and magnetoresistive sensor, the magnetic field distribution characteristics of the magnetic nail and the basic principle of the magnetoresistive sensor are analyzed, and the selection of the components and the design of the signal conditioning circuit are completed. In the aspect of software, the transverse / longitudinal magnetic field matching algorithm and the control algorithm are designed. In order to monitor the switching state and power state of the transmitting coil, the dynamic wireless charging state monitoring interface for electric vehicle is designed. In this paper, the MATLAB/Simulink simulation is used to verify the effect of the switching control of the transmitting coil on the stability of the system. Finally, the magnetic location detection system is applied to the demonstration platform of the dynamic wireless charging system of electric vehicle, and the combined adjustment experiment is carried out, which preliminarily meets the design requirements of the system.
【學位授予單位】:北京交通大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TM724;TM910.6
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