Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

UPS zero line open circuit detection method and device and UPS

A technology of open circuit detection and neutral line, applied in the field of UPS, can solve the problem of high cost

Active Publication Date: 2018-09-21
KEHUA DATA CO LTD +1
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the detection method for the open circuit of the input neutral line of the inverter module 12 is generally to install a current transformer on the input neutral line cable inside the three-phase UPS, and use the current transformer to detect the magnitude of the neutral line current. method requires an additional current transformer at higher cost

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • UPS zero line open circuit detection method and device and UPS
  • UPS zero line open circuit detection method and device and UPS
  • UPS zero line open circuit detection method and device and UPS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] The core of the present invention is to provide a UPS neutral line open circuit detection method, which is used to reduce the detection cost when detecting whether the input neutral line of the inverter module is open circuit. In addition, the present invention also provides a neutral line disconnection detection device and UPS. The method and device can be realized by the controller of the UPS itself, or can be realized by other devices...

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

PUM

No PUM Login to View More

Abstract

The invention discloses a UPS zero line open circuit detection method and device and a UPS. The method comprises the steps that the phase voltage value inputted by a three-phase power supply and the voltage difference value between the positive DC bus and the negative DC bus are detected; whether the voltage difference value is within the preset theoretical calculation value range of zero line open circuit is judged; and if the judgment result is yes, the situation of zero line open circuit is determined, wherein the theoretical calculation value range is determined according to the type of the rectification module in the UPS and the phase voltage value. Therefore, the method can be realized based on the controller of the UPS. Compared with the mode of additional arrangement of the hardware in the prior art, additional arrangement of the hardware is not required by the method, the cost is low, and the method is simple in calculation logic and low in resource consumption of the controller. Besides, the UPS zero line open circuit detection device and the UPS also have the beneficial effects.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a UPS neutral line disconnection detection method and device, and the UPS. Background technique [0002] UPS is an important power supply device in the power electronics industry. It cooperates with the bypass power supply to realize uninterrupted power supply to the load. figure 1 A main topology structure diagram of a three-phase UPS provided for the prior art. like figure 1 As shown, the three-phase UPS mainly includes a rectifier module 10 , an electrolytic capacitor module 11 and an inverter module 12 . The three-phase AC power L1-L3 is rectified by the rectifier module 10 to obtain positive and negative DC bus voltages, and the inverter circuit 12 converts the DC power on the DC bus to an AC output, wherein the input and output of the inverter module 12 share the neutral line N. [0003] During application, when the input neutral line N of the inverter module 1...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01R31/02
CPCG01R31/58
Inventor 刘艺超林圣雄叶柄
Owner KEHUA DATA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com