Designed Of The Distributed Power Grid Control System Based On FPGA+ARM

Wiih the development of industrial technology,the consumption of fossil fuels increased rapidly.The supply of coal,oil,natural gas and other fossil fuels cannot satisfy the demand of the development of human society in a long term,the emergence of the oil crisis,the coal industry fading,the human consciousness must seek new sources of energy supply as song as possible.The solar energy has been studied and developed by human beings,especially the solar power generation technology,which has been paid great attention.Solar energy,as a kind of renewable energy,has a great deal of energy crisis,which is inevitable to overcome the global energy crisis.In this paper,a control system based on FPGA+ARM distributed power grid connected is designed,the main circuit of the system includs three-level NPC inverter circuit,DC/DC converter circuit,and a control circuit,control circuit part mainly consists of a FPGA and ARM processing cores and the corresponding signal acquisition and driving circuit.The main task of this project is to design a drive control circuit of the double processor architecture based on FPGA+ARM using digital signal processor of the powerful data operation ability and field programmable gate array of modular structure design,fast response speed,will drive control circuit,integrated,reduces the number of peripheral circuits and components,reducing the size of the control panel,at the same time,the system performance and processing speed greatly enhance.FPGA+ARM dual CPU architecture makes full use of the advantages and characteristics of FPGA and ARM,through the two collaborative processing to improve the performance of the system.ARM has the pipelining design method,hardware multiplier,PWM module and rich design resources,very suitable for to the IGBT control algorithm design,FPGA can through the hardware implementation of logic and timing of efficient and accurate control,in AD sampling module,distributed power and the MPPT mode block design for and realize the complementary function of FPGA and ARM perfectly.The system adopts two-stage transformation structure to design,the former adopts the boost DC/DC converter circuit,which is used to improve the output voltage of the solar battery,track the control of the maximum power point,adopt the three-level NPC inverter circuit,To achieve the output voltage of the DC/AC conversion and grid.The simulation of the three-phase grid-connected control system model is carried out by MATLAB to verify the practicability of the system control strategy.At the same time,the MPPT module and the PWM generation module based on FPGA platform are used to simulate and analyze.