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UPS control method and UPS

A control method and DC power supply technology, applied in the field of power supply, can solve the problems of reduced bus capacitance, faster quick detection time, false detection, etc.

Active Publication Date: 2020-12-01
KEHUA DATA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a UPS control method and UPS to solve the problems in the prior art that the bus capacitance is reduced, the quick detection time is accelerated, and it is easy to cause false detection

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  • UPS control method and UPS
  • UPS control method and UPS

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Embodiment Construction

[0025] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0026] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0027] refer to figure 1 and figure 2 , the embodiment of the present invention provides a UPS control method, the UPS includes: a DC power supply, an inverter module, a first power supply circuit and a second power supply circuit connected in parallel to the busbar ...

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Abstract

The invention is suitable for the technical field of power supplies, and provides a UPS control method and a UPS. The UPS control method comprises the following steps: obtaining the bus voltage of theUPS in real time when the UPS independently supplies power to a commercial power; determining whether the bus voltage is less than a first preset voltage; and if the bus voltage is smaller than the first preset voltage, controlling the UPS to be switched to the commercial power and a DC power supply to supply power simultaneously. According to the invention, a rapid detection scheme for detectingthe mains supply is abandoned, the mains supply state is determined through the bus voltage, when the bus voltage is abnormal, the mains supply and DC power supply combined power supply mode is immediately switched, seamless switching between mains supply power supply and DC power supply power supply is realized, load outage is prevented, stability and reliability are realized, and false detection is not caused.

Description

technical field [0001] The invention belongs to the technical field of power supplies, and in particular relates to a UPS control method and the UPS. Background technique [0002] Uninterruptible Power System (UPS) refers to a device that can continue to supply power to the load to ensure the normal power supply of the load when the AC input power supply is abnormal or cut off. Because of its excellent performance and convenient maintenance function, it has been widely used in various fields. When the mains is normal, the mains supplies power to the load, and the battery does not supply power; when the mains is abnormal, the battery supplies power to the load. [0003] In the prior art, quick detection of mains power failure is often used to immediately detect the mains power failure and quickly switch to battery power supply to ensure continuous power supply to the load. However, in order to reduce the cost of the UPS, the capacitance of the bus capacitor is reduced, and ...

Claims

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Application Information

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IPC IPC(8): H02J9/06
CPCH02J9/062
Inventor 卢雄伟许永志苏宁焕陈海飞
Owner KEHUA DATA CO LTD
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