Design of Automatic Rechargeable Emergency Power Supply
Abstract: In A suddenly power failure always cause bad effect on normal life and industry production It may cause the heavy economic loss for some important users. So the high quality Emergency Power Supply system is necessary to people’s life and production for emergency situation This article is written to explain the design of the main circuit and its control of the charger with high-frequency switch and the inverter. I introduced the AT89S52MCU, which can produce PWM signal and have control over the charger with high-frequency switch, and at the meantime, I brought forward the idea of producing driving signal SPWM wave by connecting SPWM wave-form-producing implement and SCM, and achieving the function of the checking and alarming of the system.This design has the advantages of high power factor, short start time, quick emergency, no noise, simple maintenance and unattended.
Key Words: AT89S52; Bidirectional DC-DC Converter; Bidirectional PWM Converter; Lead-acid battery
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