Three-phase power factor correction device

A correction device and three-phase power technology, applied in the direction of output power conversion device, AC power input conversion to DC power output, climate sustainability, etc., can solve the problems of large number of switches, direct short circuit, high cost, etc., to reduce The probability of danger, the convenience of circuit design, and the effect of suppressing electromagnetic interference

Active Publication Date: 2022-05-10
SUZHOU MEAN WELL TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the six-switch three-phase power factor correction circuit uses too many switches, the control is complicated, and the cost is high. When common mode noise occurs, the two power switches 10 connected in series on each bridge arm have the risk of a direct short circuit. The reliability requirements of power drive control are very high

Method used

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Embodiment Construction

[0031] The embodiments of the present invention will be further explained in conjunction with related figures below. Wherever possible, the same reference numbers are used throughout the drawings and description to refer to the same or like components. In the drawings, shapes and thicknesses may be exaggerated for simplification and convenient notation. It should be understood that elements not particularly shown in the drawings or described in the specification are forms known to those skilled in the art. Those skilled in the art can make various changes and modifications based on the content of the present invention.

[0032] Unless otherwise specified, some conditional sentences or words, such as "may", "may", "maybe", or "may", are usually intended to express that the embodiment of the present case has, but can also be interpreted as features and elements that may not be required , or step. In other embodiments, these features, elements, or steps may not be required.

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Abstract

The invention discloses a three-phase power factor correction device, which comprises a three-phase switch group, three inductors and three filter capacitors. The three-phase switch group is coupled between a first output terminal and a second output terminal. All inductors are coupled to the three-phase transfer switch group. The three-phase switch group receives the three-phase electromagnetic interference filtering voltage through the inductor, and converts the three-phase electromagnetic interference filtering voltage into a DC voltage. All filter capacitors are respectively coupled to all inductors and to the second output terminal, each filter capacitor is connected between the corresponding inductor and the second output terminal, and all filter capacitors filter out the common of three-phase electromagnetic interference filtering voltages Moderate noise to reduce the probability of danger.

Description

technical field [0001] The invention relates to a correction device, and in particular to a three-phase power factor correction device. Background technique [0002] Power factor refers to the relationship between effective power and total power consumption, that is, the ratio of effective power divided by total power consumption. Generally speaking, power factor can be used to measure the degree of power utilization. When the power factor value The larger the value, the higher the power utilization rate. Power factor correctors applied to power supplies are mostly used to control and adjust the time and waveform of AC current input to make it as consistent as possible with the DC voltage waveform, so that the power factor value is close to 1, and avoid power equipment system consumption. Electricity exceeds its specification, creating unnecessary disturbances. [0003] From the above, it can be seen that low power factor means low power efficiency, and the lower the power...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/42H02M1/44H02M1/12H02M1/38H02M7/219
CPCH02M1/4233H02M1/44H02M1/126H02M1/38H02M7/219H02M7/2173Y02B70/10
Inventor 钟郁纬刘亚哲黄士荣王士昕
Owner SUZHOU MEAN WELL TECH CO LTD
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