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

Power factor correction circuit and assembly and online uninterruptible power supply comprising same

A power factor correction and circuit technology, applied in output power conversion devices, electrical components, circuit devices, etc., can solve the problem of high cost and loss of low-voltage AC transmission lines, reduce the economy and efficiency of power distribution systems, and increase equipment footprint. and other problems, to achieve the effect of low cost, online service and small size

Pending Publication Date: 2020-06-12
EATON INTELLIGENT POWER LIMITED
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under high-power loads, the cost and loss of low-voltage AC transmission lines are large, which reduces the economy and efficiency of the entire power distribution system
In addition, it is necessary to increase the incoming line cabinet and outgoing line cabinet matched with the power frequency transformer, which increases the equipment cost and increases the floor area of ​​the entire equipment, resulting in low power density

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
  • Power factor correction circuit and assembly and online uninterruptible power supply comprising same
  • Power factor correction circuit and assembly and online uninterruptible power supply comprising same
  • Power factor correction circuit and assembly and online uninterruptible power supply comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0057] figure 2 is a circuit diagram of a power factor correction assembly according to a first embodiment of the present invention. like figure 2 As shown, the power factor correction component 2 includes a power factor correction circuit 21 and a power factor correction circuit 22. The input terminals of the power factor correction circuits 21 and 22 are connected in series and then connected to a medium-voltage alternating current Vi (for example, 10 kV), and the output terminal The parallel connection is between the positive DC bus 20 and the negative DC bus 20'.

[0058] The power factor correction circuit 21 includes a cascaded full bridge pulse width modulation rectifier 211 and an isolated DC-DC converter 212 . The full-br...

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 provides a power factor correction circuit and assembly and an online uninterruptible power supply comprising the same, the power factor correction circuit comprises a pulse width modulation rectifier and an isolated DC-DC converter, and the output end of the pulse width modulation rectifier is connected to the input end of the isolated DC-DC converter. The power factor correction assembly comprises a plurality of power factor correction circuits, the input ends of pulse width modulation rectifiers in the plurality of power factor correction circuits are connected in series, andthe output ends of isolated DC-DC converters in the plurality of power factor correction circuits are connected in parallel. The power factor correction assembly is free of an industrial frequency transformer, small in size and low in cost, and the working reliability is improved.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to a power factor correction circuit and components and an on-line uninterruptible power supply including the same. Background technique [0002] On-line uninterruptible power supply means that regardless of whether the grid voltage is normal or not, the AC voltage used by the load must pass through the inverter, and the inverter is always in working condition. On-line uninterruptible power supplies can continuously supply power to loads, and have been widely used in various fields. [0003] figure 1 It is a circuit block diagram of an online uninterruptible power supply in the prior art. The on-line uninterruptible power supply 1 includes a power factor correction circuit 11 , an inverter 12 and a bidirectional DC-DC converter 13 . [0004] When the low-voltage alternating current Vi' (such as mains) is normal, the control device ( figure 1 not shown) control the power factor...

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): H02M1/42H02M7/04H02J9/06
CPCH02M1/4208H02J9/062H02M1/4233H02M7/4807Y02B70/10Y02P80/10H02M1/0074H02M1/007H02M3/33573H02M3/33571H02M3/33584
Inventor 罗成忻慧婷李晗郑大为李化良
Owner EATON INTELLIGENT POWER LIMITED
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com