An Uninterruptible Power Supply System with Dual-Input Intelligent Power Supply

Abstract

The invention discloses an uninterrupted power system capable of conducting double-input intelligent power supply. The uninterrupted power system capable of conducting double-input intelligent power supply comprises a power source input control unit and a UPS unit. The power source input control unit comprises a first input module, a second input module, an input switching module and a commercial power detecting module. The work state of a second power source is detected in real time by the commercial power detecting module and power sources of the input end of the UPS unit is intelligently adjusted or switched. When the two alternating current power sources both work normally, the main working power source is controlled to supply power to a load. When the main working power source is damaged or cannot be normally operated, the standby working power source can achieve power supply in a replaced mode, the functions of alternating power supply conducted by the main working power source and the standby working power source and prior power supply of the main working power source are achieved according to the standby working power source, the probability of load power interruption is reduced, the power using cost is saved, and the reliability of power supply of a load device is improved.

Description

technical field [0001] The invention relates to the technical field of uninterruptible power supplies, in particular to an uninterruptible power supply system with dual-input intelligent power supply. Background technique [0002] UPS (Uninterruptible Power System / Uninterruptible Power Supply, uninterruptible power supply), is a constant voltage and constant frequency uninterruptible power supply with an energy storage device and an inverter as the main component, mainly used for powering a single computer, computer Network systems or other power electronic devices provide uninterrupted power supply. When the mains input is normal, the UPS will stabilize the mains and supply it to the load. At this time, the UPS is an AC mains voltage stabilizer, and it also charges the battery inside the machine; when the mains is interrupted, the UPS immediately The electric energy of the battery in the machine is continuously supplied to the load through the method of inverter conversion...

AI Technical Summary

Problems solved by technology

[0003] With the continuous improvement of the reliability of load power supply by users, it is proposed to use the AC power generated by the mains and the generator to connect to the input of ATS (Automatic transfer switching equipment, automatic transfer switching equipment), and then connect the output of ATS to the The input power supply end of the uninterruptible power supply. This method of use increases the user's installation cost and installation space. The contactor of the ATS is easily affected by the input operating voltage, which may cause the back-end load to be powered off, and cannot communicate with the uninterruptible power supply.

[0004] When the mains power fails, the ATS sends a dry contact signal to turn on the generator, and the battery of the uninterruptible power supply is always in a saturated state. The battery will supply power to the load through the inverter and generate electricity only when there is no mains power and generator failure. After the generator is started and running normally, if the mains has been cut off, the generator has been supplying power to the uninterruptible power supply (UPS), and the battery has no backup function. The generator runs for a long time, and the noise generated during operation will affect the lives of nearby residents. The exhaust gas will pollute the environment, and the power supply system is not energy-saving. In addition, the contactor of the ATS transfer switch is also easily affected by the input operating voltage, which may cause the back-end load to be powered off

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