Research On AGV Wireless Power Transfer System And Its Optimization Strategy

With the speedy improvement of industrial logistics,factories have greater necessities for the talent and transportation effectivity of the logistics system.Automated guided cars(AGVs)are broadly used.However,common wired charging is less secure,which severely prevent the improvement of AGV.The magnetic coupling resonant wireless power transfer technology know-how to AGV charging has turn out to be the high-quality answer to this problem.With compensation topology as the principal objective,this paper research the radio electricity transmission device utilized to AGV.The main research contents are as follows:Firstly,four mathematical models of basic compensation topologies are established,and the reasons why the four basic topologies are not suitable for AGV wireless power transfer systems are analyzed.Then the Double-Sided LCC(DSLCC)compensation topology is established,the power and efficiency models are derived,and the elements affecting transmission effectivity are analyzed,this topology has low transmission effectivity when charging the battery with excessive current.To resolve this problem,based on the DSLCC topology,an improved topology of DSLCC-T is proposed,and a mathematical model is established,the efficiency model is derived,the influence of coil mutual inductance,load resistance,transformer excitation inductance,and transformer turn ratio on transmission efficiency is analyzed.Secondly,the DSLCC and DSLCC-T topologies are in contrast and analyzed.It is observed that the two topologies are appropriate for different load conditions,the influence of the efficiency dividing line by coil mutual inductance and transformer excitation inductance is analyzed.The commonly used symmetrical parameter design method is then derived and improved,on the premise of no longer altering parameters such as output power and output current,the compensation parameters are reconfigured by way of adjusting the ratio of the compensation parameters on each side.The coil currents are equal,the compensation parameters for the most transmission effectivity can be obtained,and a simulation is constructed for verification.Finally,Finally,a 1k W AGV wireless power transfer system is built for experimental verification.The highest system effectivity was once 88.54%,when the device output used to be 48V/20A.