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

Converter with power factor correction

一种转换器、变压器的技术，应用在输出功率的转换装置、直流功率输入变换为直流功率输出、高效电力电子转换等方向，能够解决窄输入电压范围等问题，达到降低开销、高效率的效果

Inactive Publication Date: 2012-09-12
SIEMENS AG
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to a narrow input voltage range, such converters also have undesired losses due to the reloading process (Umladungsvorgaenge)

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
  • Converter with power factor correction
  • Converter with power factor correction
  • Converter with power factor correction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] 1-3 show known PFC circuits which convert an input AC voltage into an intermediate circuit DC voltage. In the case of a passive circuit ( FIG. 1 ), a sufficiently large inductor L is arranged before the rectifier unit. The conduction angle varies in this way with respect to the original current curve I N * is increased, but a phase shift to be considered occurs therein.

[0039] The active circuit (Figures 2a and 2b) includes a clock-controlled switch S, by means of which the current I can be influenced in addition to the conduction angle N phase.

[0040] exist image 3 The converter shown in includes a rectifier bridge on the input side, which is connected to the AC voltage U N on and the AC current I N converted into a rectified current I N '. A filter capacitor C is connected downstream of the rectifier bridge F , the filter capacitor C F are dimensioned with respect to the AC voltage U N The frequency is small. The filter capacitor C F It can also advan...

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 relates to a converter for converting an input-side alternating current (UN) into an output-side DC current (Usek), a power factor correction being provided and the converter comprises a transformer having at least two serially arranged primary windings (Lp1, Lp2). Also, a first switch (S1) is used to switch a storage capacitor unit (CSp) in series with a first primary winding (Lp1) to the alternating current (UN) in a clocked manner via rectification elements (GD1, GD2, GD3, GD4) and a second primary winding (Lp2) can be switched to the storage capacitor unit (CSp) in a clocked manner by means of a second switch (S2).

Description

technical field [0001] The invention relates to a converter for converting an input-side AC voltage into an output-side DC voltage, wherein power factor correction is provided and the converter comprises a transformer with at least two primary windings arranged in series. Furthermore, the invention relates to a method for operating such a converter. Background technique [0002] Converters used in conventional mains supply systems usually have strongly harmonically charged input currents or a power factor significantly below unity. The reason for this is the need to recharge the DC-side storage capacitor via the AC-side rectifier. Short, needle-shaped current peaks are the result. Without additional measures, the height of the current peaks is only limited by the internal resistance of the input-side grid, grid filter, rectifier and storage capacitor. [0003] In order to reduce the proportion of interfering harmonics in the current consumption of the converter, a so-call...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33569Y02B70/10Y02P80/10H02M3/01H02M3/335
Inventor C.奥格斯基
Owner SIEMENS AG
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