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Circuit capable of increasing conduction angle of bridge rectifier

A technology of rectifier circuit and rectifier bridge stack, which is applied in the direction of converting irreversible AC power input to DC power output, etc., can solve the problems of large inrush current and unfavorable tube life, and achieves long service life, strong practicability and reasonable structure design. Effect

Active Publication Date: 2014-07-09
HISENSE HOME APPLIANCES GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, a large inrush current flows through the rectifier diode, which is detrimental to the life of the tube

Method used

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  • Circuit capable of increasing conduction angle of bridge rectifier
  • Circuit capable of increasing conduction angle of bridge rectifier
  • Circuit capable of increasing conduction angle of bridge rectifier

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with specific facts.

[0017] Such as Figure 1 to Figure 3 Shown is the embodiment of the circuit for improving the conduction angle of the rectifier bridge pile in the present invention, including a first rectifier circuit and a second rectifier circuit, and is characterized in that an adjustment circuit is set between the first rectification circuit and the second rectification circuit, and the adjustment circuit They are respectively electrically connected to the first rectification circuit and the second rectification circuit.

[0018] In this embodiment, the first rectifier circuit is composed of four rectifier diodes D1, D2, D3, and D4. The mains power is connected to the anode of diode D1 and the cathode of diode D2 after passing through the PFC reactor, and the cathode of diode D1 is connected to diode D3. The cathode of the diode D2 is connected to the anode of the diode D4, the anode of...

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Abstract

The invention relates to the technical field of rectifying circuits and capacitor filtering circuits in alternating current and direct current conversion, in particular to a circuit capable of increasing the conduction angle of a bridge rectifier. The circuit comprises a first rectifying circuit body and a second rectifying circuit body and is characterized in that a regulator circuit body is arranged between the first rectifying circuit body and the second rectifying circuit body, and the regulator circuit body is electrically connected with the first rectifying circuit body and the second rectifying circuit body respectively. According to the circuit, the regulator circuit body is additionally arranged between the two rectifying circuit bodies which are originally independent so as to prolong the conduction time of diodes in the corresponding original rectifying circuit bodies to increase the conduction angle and reduce impact currents, and therefore the service life of the diodes is prolonged. The circuit capable of increasing the conduction angle of the bridge rectifier prolongs the conduction time of diodes in the capacitor filtering circuits, and increases the conduction angle, thereby prolonging the service life of the diodes.

Description

technical field [0001] The invention relates to the technical field of a rectifier circuit and a capacitor filter circuit in AC-DC conversion, in particular to a circuit for improving the conduction angle of a rectifier bridge stack. Background technique [0002] Capacitor filter circuit is simple in structure, easy to use, and widely used, but its pulsation component is relatively large. Although the rectifier circuit can convert alternating current into direct current, it is not suitable for some places that require smooth direct current. It is necessary to add a filter circuit to reduce rectification The pulsating component in the latter direct current. [0003] The DC component of the filtered output voltage is increased, while the pulsating component is reduced. This is due to the energy storage effect of the capacitor, which causes the capacitor to discharge (release energy to the load) when the diode is turned on (energy storage) and cut off. The average value of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/06
Inventor 任艳芳王斌吕根贵
Owner HISENSE HOME APPLIANCES GRP CO LTD
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