Design And Implementation Of Charging Control System Based On SoC FPGA

With the intensification of enviornmental polution and the imapct of bad weather,people'demand for clean energy vehicles is increasing day by day.With the rapid development of electric vehicles,which put forward higher requirements of technology,performance and convenience of the charging system.This thesis proposes to design a charge system based on So C FPGA,which has the features of excellent performance,easy upgrade and scalability.This thesis discusses the design and implementation of charge controll system from four aspects: system scheme design,hardware circuit design,three-phase bridge full-control rectification control IP core and embedded software design.(1)First,in the aspect of scheme design,the functional requirements of the system are analyzed,the overall architecture of the system is designed,the embedded control platform based on So C FPGA is selected,and the hardware and software architecture of the system is determined.(2)Second,in the hardware circuit design,the overall scheme of the charge control system is designed.Three-phase bridge rectifier,pulse drive isolation,zero-crossing detection,feedback sampling,human-computer interaction,network communication,PCB design and main control board power supply and other modules schematic diagram are completed.And the whole hardware circuit of the charging control system is realized by making board,welding and debugging the designed circuit.(3)Third,in the design of the three-phase bridge rectification control IP core,a three-phase bridge-type full-control rectification control IP core based on PID adjustment algorithm is realized by using programmable logic design.The IP core includes the synchronous phase detection,feedback sampling,digital filtering,PID adjustment,control pulse generation and other control modules of the three-phase bridge full-controlled rectification process.The logic IP was packaged,simulated and tested to verify the effectiveness of the three-phase bridge full-control rectification IP core.(4)Fourth,in the aspect of system software design,the embedded development environment based on So C FPGA is built,the self-defined three-phase bridge full-control rectifier IP core is integrated into the So C system,and the embedded Linux system is customized.The overall scheme of the control software of the charging control system is designed.Through embedded programming,the functions of charge control,abnormal detection,human-computer interaction and network communication are designed and realized.Last but not the least,the hardware and software systems implemented are integrated and debugged,and the charge system based on So C FPGA is realized.By setting up experimental enviornment to test the hardware and software of the implementation system,and verified the correctness of the system.This thesis proposes a charge system based on So C FPGA design,which has clear design hierachy,flexible design framework.At the same time,system scalability and subsequent upgrade space are greatly improved.In addition,intetnet of things communication technology is combined to make the device more capable of communication.This design has certain significance for the design and implementation of electric vehicle charging piles.