Study On Three Phase Emergency Power Supply System Based On DSP

The three phase emergency power supply system based on DSP are studied and analyzed deeply in the thesis.After surveying and studying the domestic and international research current situation on switching power supply and application technology and carrying on systematic analysis and synthesize to the present domestic and international emergency power supply , we take out specification and general project to meet the performance demand that full numerical control and intelligent ,including the main circuit of the charger and the inverter, and calculate the parameter of power transformer ,and choose the types of IGBT.Then, after the speciality of lead acid accumulator was studied in deep and analyzed, the control scheme of charge and recharge was designed and the principle was expatiatedThe output of inverter and control scheme is the stress of this paper, firstly the PWM technology was discussed and the SVPWM technology that has been applied in the field of motor control system ,we adopt this SVPWM technology in our emergency power supply together with the PI regulator .It is to control the space voltage vector invariable aptitude in d axle and d axle in fact, so the three phase SPWM output was get finally. After this analysis the simulation module was established based on the Matlab/simulink ,and the simulation results proved that it has fine balanced degree of wave form of three phase voltage and low wave form distorted degree by adopted this method, even under the serious asymmetric three phase load.On the basis of theory analysis and emulation, the hardware circuit and software design of the emergency power supply control system based on DSP is introduced in detail finally. And the hardware circuit and software of the control system is tested. The results of experiment demonstrate the accuracy of software design of the control system.