Unlock instant, AI-driven research and patent intelligence for your innovation.

Power factor correction circuit and switching power supply module, power factor correction method

A power factor correction and circuit technology, applied in the field of electronics, can solve problems such as limited increase in topology power density, and achieve the effects of flexible use of control strategies, improved power density, increased versatility and universal applicability

Active Publication Date: 2016-04-27
VERTIV CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a power factor correction circuit, a switching power supply module, and a power factor correction method to solve the problem of limited improvement in topology power density of a bridgeless PFC circuit in the prior art

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 switching power supply module, power factor correction method
  • Power factor correction circuit and switching power supply module, power factor correction method
  • Power factor correction circuit and switching power supply module, power factor correction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In order to solve the problem that the power density of the bridgeless PFC circuit topology in the prior art is limited, Embodiment 1 of the present invention provides a brand new power factor correction circuit. This circuit topology can be set in the switching power supply module to realize two Frequency doubling function, the so-called double frequency means that the operating frequency of the inductor is equal to twice the operating frequency of the switching device. The structure of the circuit topology is as Figure 4 shown, including:

[0032] A bridge rectifier circuit composed of the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4;

[0033] The second switch component S2 is connected in parallel with the first diode D1 to form a second parallel branch;

[0034] The third switch component S3 is connected in parallel with the second diode D2 to form a third parallel branch;

[0035] Where: in the second parallel branch, the comm...

Embodiment 2

[0071] In order to solve the problem that the power density of the bridgeless PFC circuit topology in the prior art is limited, Embodiment 2 of the present invention provides a brand new power factor correction circuit. This circuit topology can realize the 2n frequency multiplication function. The structure of the circuit topology Such as Figure 6 shown, including:

[0072] The circuit topology and Figure 4 The difference of the circuit topology shown is that the first switching component S1 is a set number of first switching devices connected in parallel, such as Figure 6 The first switching device shown in S 11 ,...,S 1n ; The second switch assembly S2 is a set number of second switch devices connected in parallel, such as Figure 6 The second switching device S shown in the 21 ,...,S 2n ; The third switching component S3 is a third switching device with a set number connected in parallel, as shown in the figure, the third switching device S 31 ,...,S 3n .

[0073...

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 power factor correction circuit, a switching power supply module and a power factor correction method. The circuit comprises: a bridge type of a first diode, a second diode, a third diode and a fourth diode A rectifier circuit; a second switch component, connected in parallel with the first diode to form a second parallel branch; a third switch component, connected in parallel with the second diode to form a third parallel branch; a capacitor, one end connected to the third diode and the common terminal between the second parallel branch, and the other end is connected to the common terminal between the fourth diode and the second parallel branch; the inductance branch composed of the AC power supply and the inductor in series; the first switch assembly, and the Two ends of the inductance branch are connected in parallel to form a first parallel branch. The circuit can realize the function of doubling the frequency, so that the switching power supply module can work; under the working state of twice the frequency, the power density of the switching power supply module can be improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a power factor correction circuit, a switching power supply module and a power factor correction method. Background technique [0002] The switching power supply module is a capacitor input circuit. High efficiency and high power density are two important indicators of the switching power supply module. In order to achieve the goal of high efficiency and reduce the exchange power loss caused by the phase difference between current and voltage, it is necessary to The single-phase power factor correction (PowerFactorCorrection, PFC) circuit improves the power factor, where the power factor refers to the relationship between the effective power and the total power consumption, generally refers to the ratio of the effective power divided by the total power consumption. It can be used to measure the degree to which electricity is effectively utilized. The larger the power factor v...

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): H02M1/42H02M7/40
CPCY02B70/10
Inventor 邓凯
Owner VERTIV CORP