Research and Design of AC UPS Uninterruptible Power Supply System Based on AT89C52
With the continuous development of computer technology and communication technology,the safe and reliable operation of railway,medical,data storage and other systems is closely related to uninterruptible power supply.In order to meet the needs,an AC UPS uninterruptible power supply is designed,which is composed of rectifier circuit,battery,inverter circuit,static bypass and so on.AT89C52 is used as the main control chip,charger and battery are used to provide energy for UPS,stable voltage is provided for inverter circuit through voltage stabilizing circuit,alternating current with stable frequency and voltage is provided for UPS through inverter cir-cuit,and uninterrupted power supply switching is provided for UPS through static bypass.Finally,the simulation test of the AC UPS un-interruptible power supply system is carried out,and the results show that the designed AC UPS uninterruptible power supply can stably provide AC voltage to the load,and the power supply has high efficiency,strong stability,small size and high output precision,which en-sures the uninterruptible power supply to the load and has certain practical significance.
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