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

Control device applied in power factor correction power converter and control method thereof

A technology of power factor correction and power converter, which is applied in the direction of output power conversion device, high-efficiency power electronic conversion, control/regulation system, etc., and can solve the problems of high-frequency switching energy loss, increase, and increased THD

Active Publication Date: 2013-07-10
LEADTREND TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, even if the on-time increases slightly with the shortening of the off-time, once the off-time is too short, it will cause unnecessary high-frequency switching energy loss (switching loss)
Moreover, the on-time changes with the off-time (off-time), which may increase the THD instead

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
  • Control device applied in power factor correction power converter and control method thereof
  • Control device applied in power factor correction power converter and control method thereof
  • Control device applied in power factor correction power converter and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The content of the present invention will be explained below through examples. However, the embodiments of the present invention are not intended to limit the present invention to be implemented in any specific environment, application or special method as described in the embodiments. Therefore, the descriptions about the embodiments are only for the purpose of explaining the present invention, not limiting the present invention. It should be noted that in the following embodiments and drawings, elements not directly related to the present invention have been omitted and not shown. For technical convenience, components that are the same or similar, or have similar functions, will use the same component symbols when explaining. However, it should be emphasized that the same labeled elements in different embodiments can be implemented by different elements.

[0028] Please refer to FIG. 2 , which is an AC-to-DC converter 50 implemented according to an embodiment of the...

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

A control device and a control method applied to a power factor correction power converter. The control device is used to reduce the change rate of a reference signal having a rising part and a falling part when the input voltage is close to zero potential. When the main winding almost completely releases the stored energy and the falling part of the reference signal reaches a condition, the control device turns on a switch to start increasing the stored energy of the main winding.

Description

technical field [0001] The present invention relates to an AC to DC converter architecture, in particular to an AC to DC converter architecture with power factor correction (power factor correction, PFC). Background technique [0002] In most AC-to-DC converters, it is desirable to have the entire circuit exhibit a purely resistive behavior with respect to the AC input voltage. For this reason, many active PFC architectures have been developed today, and these PFC architectures can generate a corresponding AC input current when receiving an AC input voltage. [0003] For PFC, it is very important to generate a sine wave current with very low total harmonic distortion (THD). THD and power factor represent the operational performance of the PFC circuit. The highest value of power factor is 1, and in general practice, THD is acceptable as long as it is lower than 15%. [0004] For example, US Patent Nos. 7,375,995, 7,397,678, re40016, and 7,295,452, etc. all disclose part 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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/42G05F1/70
CPCY02B70/126Y02B70/10Y02P80/10
Inventor 吴宗修
Owner LEADTREND TECH
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