Uninterrupted power supply and method for detecting bypass fault of uninterrupted power supply

A power supply and circuit technology, applied in the field of uninterruptible power supply and its bypass fault detection, can solve problems such as user trouble, fault expansion, and unstable bus midpoint voltage, and achieve the effect of improving performance, competitiveness, and high reliability
CN101630854BActive Publication Date: 2012-06-27VERTIV CORP
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
VERTIV CORP
Publication Date
2012-06-27

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an uninterrupted power supply capable of carrying out bypass current backward flowing detection. The uninterrupted power supply comprises a UPS main circuit and a tri-line UPS bypass coupled to the UPS main circuit; and the midpoint of a bus of the UPS main circuit is connected with each one of three lines of an input end of the UPS bypass through dummy load respectively. In the uninterrupted power supply for carrying out short-circuit detection before electrification of a bypass thyristor, the midpoint of the bus of the UPS main circuit is connected with each one of the three lines of an output end of the UPS bypass through the dummy load. In the uninterrupted power supply capable of carrying out bypass current backward flowing detection and short-circuit detection before electrification of the bypass thyristor, the midpoint of the bus of the UPS main circuit is connected with each one of the three lines of the output end and each one of the three lines of theinput end of the UPS bypass through the dummy load. The invention also discloses a method for detecting bypass fault of the uninterrupted power supply. The method realizes bypass detection through current detection, does not cause detection coupling as the UPS is connected with a common bypass source, and has no misinformation and omissive report in parallel operation.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to an uninterruptible power supply (Uninterruptible Power Supply, referred to as UPS), in particular to an uninterruptible power supply capable of bypass backfeed detection, bypass thyristor short-circuit detection before power-on, and both and bypass fault detection thereof method. Background technique

[0002] With the advancement of power electronics technology and the rapid development of the IT industry in recent years, people are increasingly aware of the important role of UPS in protecting data. Wide range of applications. Especially in the past two years, more and more companies have put forward higher requirements for the stability of their own networks and data security. Global companies have greatly improved their demand for UPS, which undoubtedly affects the quality of power supply. Kaizen acts as a stimulus.

[0003] The bypass backfeed protection function is an important guarantee for the safe operation of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More