UPS device and power supply switching control method thereof

A technology of power switching and control methods, applied in circuit devices, emergency power supply arrangements, electrical components, etc., can solve the problems of contact UPS input module easy to short circuit, improve stability and reliability, prevent instantaneous short circuit, eliminate UPS The effect of device damage

Inactive Publication Date: 2017-09-22
XJ POWER CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a UPS device and its power switching control method, which is used to solve the problems of easy generation of arc between contacts and easy short circuit between bypass module and UPS input module when the contactor is opened and closed in the current UPS power switching process

Method used

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  • UPS device and power supply switching control method thereof

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Embodiment 2

[0063] The difference between this embodiment and Embodiment 1 is that when the input of the UPS module 3 is transferred to the input of the bypass module 4, there are two cases for the fault type of the UPS module, which are:

[0064] When the UPS module 3 of the parallelable type fails and the output voltage loses power instantaneously, the UPS module 3 of the parallelable type outputs hardware signals: transfer to bypass signal is allowed, transfer to UPS signal is prohibited. The UPS monitoring and switching control module detects the above hardware signals, and at the same time judges that the output voltage has momentary power failure according to the voltage detection, and controls the switching action. The detailed steps are as follows:

[0065] 1) disconnect the UPS input contactor Q3;

[0066] II) Close the bypass input thyristor Q2;

[0067] III) Close the bypass input contactor Q1;

[0068] IV) Disconnect the bypass input thyristor Q2;

[0069] The system switch...

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Abstract

The invention relates to a UPS device and a power supply switching control method thereof. When an output voltage of a UPS module is normal, an output voltage of an output end is an inversion voltage output by the UPS module; when the output voltage of the UPS module has a fault, the output voltage of the output end is a bypass voltage; and when the output voltage of the UPS output module is recovered to a normal state, the output end is switched into the UPS module for output. The switching device disclosed by the invention is added with a silicon controlled rectifier driving circuit, so that generation of an arc in the on-off process of a contactor is effectively eliminated, an instantaneous short circuit of a bypass input and a UPS input in the switching process is prevented, stability and reliability of UPS power supply are effectively improved, a speed of switching to bypass power supply is ensured, and meanwhile, the service life of an electrical component is prolonged.

Description

technical field [0001] The invention relates to a UPS device and a power switching control method thereof. Background technique [0002] Various types of network equipment in today's communication systems have higher and higher requirements for power supply quality, and the normal operation of communication equipment must have a good-quality power supply system as a guarantee. Therefore, it is very necessary to design and establish a reliable, safe and fast switching UPS power supply system in the communication room. [0003] A Chinese patent document with the publication number CN 205666679U discloses a bypass automatic switching UPS. The device detects the power quality of the main power supply. If it does not meet the system requirements, it disconnects the relay on the main power supply line and closes the relay on the bypass power supply line to switch to bypass power supply. When mains power quality restoration is required, the system switches back to being powered b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06
CPCH02J9/061
Inventor 李龙光韩海伦乔海强罗志军赵启良尹强窦亚力
Owner XJ POWER CO LTD
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