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, which is applied in the electronic field, can solve the problems of limited improvement of topological power density, achieve the effect of flexible control strategy, improve versatility and universal applicability, and increase power density

Active Publication Date: 2016-01-20
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

[0029] 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:

[0030] An inductance branch composed of the first inductance L1, the AC power supply AC and the second inductance L2 connected in series; the first switch component S1 and both ends of the inductance branch are connected in parallel to form a first parallel branch;

[0031] The first rectification branch includes the first diode D1 and the second switch component S2 in series, wherein the anode of the first diode D1 is connected ...

Embodiment 2

[0066] 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 5 shown, including:

[0067] 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 5 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 5 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 .

[00...

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 power-factor correction circuit comprises an inductor branch formed by connecting a first inductor, an alternating current power supply and a second inductor in series, a first rectification branch, a second rectification branch, a capacitor, a third diode and a fourth diode. A first switch component is connected with the two ends of the inductor branch in parallel, the first rectification branch comprises a first diode and a second switch component in series, the second rectification branch comprises a second diode and a third switch component in series, one end of the capacitor is connected with the cathode of first diode and the cathode of the second diode, the other end of the capacitor is connected with the second switch component and the third switch component, the anode of the third diode is connected with the second switch component and the third switch component, the cathode of the third diode is connected with the first inductor and the alternating current power supply, the anode of the fourth diode is connected with the second switch component and the third switch component, and the cathode of the fourth diode is connected with the second inductor and the alternating current power supply. The circuit can achieve the two frequency doubling function, the switching power supply module is made to work under a two-frequency-doubling work state, and the power density of the switching power supply module is 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
Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/42
CPCY02B70/10Y02P80/10
Inventor 邓凯
Owner VERTIV CORP