Design And Application Of Network Intelligence Multipurpose EPS Emergency Power Supply

With the rapid development of industrial science and technology,it is important for electricity load and fire equipment supply reliability have become increasingly demanding,once the supplier suspended power supply,will result in major security incidents and huge economic losses.While in the city power supply interruption,the high-performance emergency power supply can provide power for the equipment on various occasions.Therefore,the study of high-performance emergency source of great significance.EPS system for the intelligent large buildings at unexpected failure(power outages,emergency rescue),the intelligent safety system able to ensure the overall running of large buildings,it will get more and more favor of users.Firstly,the dissertation surveys present situation and application technology of emergency power supply technology domestic and international?For the current domestic and international emergency power conducted systematic analysis,The proposed emergency power supply for the user Technical indicators designed a network of intelligent multipurpose EPS emergency power system overall program.Secondly,this paper designs the main circuit of the inverter system of EPS emergency power supply.Describes IPM module,Sinusoidal pulse width modulation technique(SPWM)and Output voltage control of three phase inverter based on Fuzzy-PI.On the in-depth study of the lithium battery charge and discharge characteristics on the basis,design the charging and discharging unit,battery equilibrium and a voltage detecting unit and a temperature detection unit,and expounds the working principle of lithium battery charge and discharge,and emphatically introduces the detection control part of the application.Thirdly this paper is designed according to the needs of EPS emergency power control system design,including the main controller,voltage and temperature sensing controller,operation temperature controller and Bluetooth wireless receiver module.Finally,this paper has carried on the experiment,and has carried on the summary and the optimization idea to this design.This paper lithium batteries as energy storage power,environmental protection,maintenance-free,small footprint,long life,switching time is short.The use of bi-directional inverter to achieve off-peak electricity energy storage.While using Modbus,Profibus-DP fieldbus and two kinds of Bluetooth and GPRS remote wireless transmission technology,enabling network intelligence.All parameters are used to detect network intelligent data acquisition,to achieve a full digital modular,so that system can be simplified,but also increase the intelligence and reliability.