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Integrated converting means with three-phase activity coefficient adjustment

A power factor correction and conversion device technology, applied in the direction of output power conversion device, irreversible AC power input conversion to DC power output, sustainable manufacturing/processing, etc., can solve the problem that the control of total harmonic distortion cannot be achieved very well effects, increased system manufacturing costs, and a large amount of circuit components used

Active Publication Date: 2007-02-07
DELTA ELECTRONICS INC
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Problems solved by technology

[0005] First of all, one of the commonly used methods is a three-phase single-switch power factor correction circuit; the advantage of this method is that the number of components used is relatively small, so the power density can be made relatively high, but the disadvantage is that the distance between the three-phase input currents Will affect each other, so the control of total harmonic distortion can not achieve very good results
[0015] (2) A large amount of circuit components are used
[0016] Directly increases the manufacturing cost of the system due to the use of excessive circuit components

Method used

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  • Integrated converting means with three-phase activity coefficient adjustment
  • Integrated converting means with three-phase activity coefficient adjustment
  • Integrated converting means with three-phase activity coefficient adjustment

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Embodiment Construction

[0031] see figure 2 , which is the circuit diagram of the first preferred embodiment of the integrated conversion device with three-phase power factor correction of the present application. As shown in the figure, the integrated conversion device is composed of upper and lower power factor correction circuits; the upper first power factor correction circuit is composed of a first bridge rectifier, a first inductor group and a first direct current The current / direct current conversion device is formed; the structure of the second power factor correction circuit in the lower layer is also the same.

[0032] Looking at the first power factor correction circuit on the upper layer, the first bridge rectifier has a first left half bridge and a first right half bridge, the first left half bridge is composed of silicon controlled rectifiers D1A and D2A, And it is connected to the first-phase alternating current A at the midpoint, and the first right half-bridge is composed of silico...

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Abstract

The invention relates to an integrated converter with three-phase power factor correction, wherein it is formed by two power factor correction circuits; said converter, based on one three-phase alternative-current switches two direct-current / direct-current converters, to transform said three-phase alternative-current into one direct-current to be output, with high circuit utilization and less elements.

Description

【Technical field】 [0001] The invention refers to a power converter, especially an integrated conversion device with three-phase power factor correction realized by using semiconductor switching elements. 【Background technique】 [0002] In the past two decades, power electronics technology has developed rapidly, and it has been widely used in electric power, chemical industry, communication and other fields. Most power electronic devices operate through the interface between the rectifier and the power network. The traditional rectifier is a nonlinear circuit composed of a diode (Diode) or a silicon-controlled rectifier (SCR), which will generate a large number of current harmonics in the power network. Wave and zero power pollute the power network and become a public hazard for power electronic equipment. [0003] Power electronic devices have become one of the most important sources of harmonics in power networks. Today, one of the main methods to suppress harmonics genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/12H02M1/14H02M7/04
CPCY02P80/10
Inventor 谭惊涛姜志强李洋朱秋花应建平蔡文荫
Owner DELTA ELECTRONICS INC
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