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Power factor compensating device

A power factor compensation and pin technology, applied in the field of switching power supply, can solve the problems of reducing the utilization rate of power generation equipment, increasing reactive power, etc., to achieve the effect of improving conduction angle, improving power factor, and reducing pollution

Inactive Publication Date: 2013-10-09
浙江嘉科电子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Not only that, it also increases the reactive power and reduces the utilization rate of power generation equipment

Method used

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  • Power factor compensating device

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Embodiment Construction

[0012] Such as figure 1 The shown power factor compensation device adopts BOOST boost circuit, which specifically includes a soft switching cycle module, a parallel interleaved module, a magnetic integration module, a current feedback detection module and a voltage feedback detection module, and the pin GD- of the soft switching cycle module M, MOSFETQ100, inductor L100, and pin ZCD-M are connected, and pin GD-S, MOSFETQ101, inductor L101, and pin ZCD-S are connected. U1 is the control chip. The pin GD-M of the control chip U1 first generates a driving signal to turn on the MOSFETQ100. At this time, the current of the inductor L100 starts to rise. When the driving signal generated by the pin GD-M ends, the MOSFETQ100 is cut off. When the current of the inductor L100 starts to drop, the pin ZCD-M of the control chip U1 detects that the inductor current drops to zero through the auxiliary winding of the inductor L100, and the pin GD-M of the control chip U1 generates a driving s...

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Abstract

The invention relates to a power factor compensating device. A BOOST circuit is adopted. The power factor compensating device is characterized in that the BOOST circuit comprises a soft switching circulation module, a parallel interleaving module, a magnetic integration module, a current feedback detecting module and a voltage feedback detecting module. The power factor compensating device is simple in structure and improves the conduction angle of switch power supply input currents, thereby improving the power factor, reducing current harmonic waves, reducing pollution to a power grid, and improving the use ratio of electricity generator power.

Description

technical field [0001] The invention relates to a switching power supply, in particular to a power factor compensation device. Background technique [0002] With the development of semiconductor devices and the deepening of the concept of energy saving and environmental protection, more and more power converters of electronic equipment use switching power supplies. The traditional AC / DC switching power supply uses rectification and filtering on the input side. This method can easily obtain high-voltage DC power supply. It is also because of the large-capacity filter capacitor after rectification that the current waveform and voltage waveform of the switching power supply input Inconsistency makes the conduction angle of the input current smaller and produces many current harmonics. Not only that, but also increased reactive power, reducing the utilization rate of power generation equipment. Contents of the invention [0003] Aiming at the deficiencies of the prior art, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/42H02M1/12
CPCY02B70/10Y02P80/10
Inventor 黄志钢李向峰王孝红唐建业李洪
Owner 浙江嘉科电子有限公司
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