Digital10KVA Three-phase Inverter Power Supply Control System Design And Development

The rapid development of modern society, digital and information correspondingequipment with unpredictable speed along with the progress of the society; Anddigital, information-based system relies on the power system, power supply, once thepower system power supply is abnormal or paralysis, digital, information systemcannot work; This will cause unpredictable major accidents and economic losses. Inthis paper, we study the three inverter control system can in the case of abnormal ormains power grid paralysis, can in time for a variety of digital power supply system.(1)expound the three inverter control system of the present situation and thefuture development trend, the classification of the emergency power supply, inverterand the basic working principle of inverter control power source.(2)analysis the three systems modeling and simulation and analysis of invertercontrol system, the digital three-phase PWM inverter, established a model based onABC three-phase static coordinate system; On the basis of the system model buildingsimulation model of three-phase inverter power supply system by analyzing thesimulation results verify the accuracy of the three-phase inverter system modeling.Then from the Angle of the carrier modulation and space vector modulationmodulation technology of three-phase inverter control system were studied. Principleand realization method of three-phase SVPWM technology was studied, and thesystem simulation, analysis the simulation results demonstrate the superiority of spacevector modulation modulation strategy.(3)detail the overall design three-phase inverter power supply control system,detailed analysis of the three-phase inverter power supply control system designrequirements and technical indicators; Three-phase inverter power supply controlsystem overall scheme design is divided into the overall scheme design of hardwareand the design of the overall software solutions, and the three-phase inverter powersupply control system of each hardware module and software module to carry on thesimple elaboration.(4)expound the three-phase inverter power supply control system hardwarecircuit design and implementation; System overall three inverter main circuit controlsystem hardware circuit includes auxiliary power inverter module, DSP control module, system module, signal detection module, SVPWM amplification and IGBTdriver module, communication module and the keyboard and display module hardwarecircuit; And the working principle of system modules are analyzed in detail.(5)expounds the three-phase inverter power supply control system softwaredesign and implementation; Software systems are analyzed in detail the main loopprogram flow chart, SVPWM interruption program flow chart and flow chart of liquidcrystal display (LCD); To load inverter system to adapt to the poor performance is notstrong, dynamic and static performance, inverter system PID waveform controlstrategy is put forward, based on the analysis of its principle and flow chart,structures, inverter system PID control strategy simulation model chart, the analysisof simulation results it is concluded that the strategy can improve the system of theinverter waveform quality and the system load adaptability.(6)base the system experimental platform and experimental analysis; Throughconstructing system experimental platform, the inverter output waveform andharmonic analysis of three-phase inverter power supply system, the system functionsand parameters indicators meet the national standards.Finally worked full text summary, the problems in the process of experiment areanalyzed and summarized, to find the solution to solve the problem; Analysis of thesystem in the process of the development of relevant innovations and later threeinverter control system improvement ideas and job prospect.