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Multi-pulse wave rectifier using active power factor correction technology and design method thereof

A technology of multi-pulse rectification and design method, which is applied in the direction of output power conversion device, conversion of AC power input to DC power output, high-efficiency power electronic conversion, etc. control, phase-shifting transformer structure and other problems, to achieve the effect of easy implementation, reducing harmonic content and improving safety

Inactive Publication Date: 2016-02-03
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the higher the number of pulses, the more complex the structure of the phase-shifting transformer used in the multi-pulse rectifier, and the larger the volume
In addition, most existing multi-pulse rectifiers use diodes as rectifier devices, which makes the output voltage of the rectifier uncontrollable, which is not conducive to expanding the application of multi-pulse rectifiers

Method used

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  • Multi-pulse wave rectifier using active power factor correction technology and design method thereof
  • Multi-pulse wave rectifier using active power factor correction technology and design method thereof
  • Multi-pulse wave rectifier using active power factor correction technology and design method thereof

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specific Embodiment approach 1

[0019] Specific implementation mode one: the following combination figure 1 and figure 2 Describe the DC side harmonic suppression system using corner / corner / star connection isolation transformers described in this embodiment, the corner / corner / star connection isolation transformer 1, the first group of three-phase bridge rectifier circuits 2, the second Three-phase bridge rectifier circuit 3, first boost chopper circuit 4, second boost chopper circuit 5, synchronization circuit 6, control circuit 7, drive circuit 8; angle / angle / star connection isolation The input winding of transformer 1 adopts delta connection, and the three-phase AC voltage u a , u b , u c connected; the first group of three-phase bridge rectifier circuits 2 are respectively connected to the output windings of the autotransformer 1 in a star shape a 1 , winding b 1 , winding c 1 connected; the second group of three-phase bridge rectifier circuits 3 are respectively connected to the output windi...

specific Embodiment approach 2

[0021] Specific implementation mode two: the following combination figure 1 and figure 2 Describe this embodiment, this embodiment is a further limitation of Embodiment 1, the isolation transformer is connected in an angle / angle / star, and the isolation transformer 1 connected in an angle / angle / star is composed of a winding a , winding b , winding c , winding a 1 , winding b 1 , winding c 1 , winding a 2 , winding b 2 , winding c 2 and other nine windings; winding a , winding b , winding c It is the input winding of the autotransformer 1 connected in a star shape, and it is connected in an angle shape; the winding a 1 , winding b 1 , winding c 1 , winding a 2 , winding b 2 , winding c 2 For corner / corner / star connection the output winding of the isolation transformer 1, the winding a 1 , winding b 1 , winding c 1 With angle connection, the winding a 2 , winding b 2 , winding c 2 Star connection; winding a , winding a 1 and winding a ...

specific Embodiment approach 3

[0022] Specific implementation mode three: the following combination figure 1 Describe this embodiment. This embodiment is a further limitation of Embodiment 1. The first group of three-phase bridge rectifier circuits 2 is an uncontrollable rectifier circuit, and the second group of three-phase bridge rectifier circuits 3 is an uncontrollable rectifier circuit. rectifier circuit.

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Abstract

The invention relates to a multi-pulse wave rectifier using active power factor correction technology and a design method thereof, and belongs to the field of electric and electronic technology. Problems of complex control strategies of a harmonic compensation circuit and system and unadjustable output voltage during harmonic compensation on an alternating-current side of the current multi-pulse wave rectification system are solved. According to the invention, angle / star-connection transformers are used as phase-shifting transformer, and a voltage increasing chopper circuit is used on the output side of a rectification ridge to control the output current of the rectification bridge, thereby achieving the objective to inhibit current harmonic waves on the alternating-current side, and allowing the output voltage of the rectifier to be adjustable. The multi-pulse wave rectifier is simple in structure and easy to realize; harmonic content of the original multi-pulse wave rectifying system is effectively reduced; the multi-pulse wave rectifier is characterized by adjustable output voltage and can be used in a large-power occasion highly demanding electric energy quality.

Description

technical field [0001] The invention relates to a multi-pulse rectifier using active power factor correction technology and a design method thereof, belonging to the technical field of power electronics. Background technique [0002] Rectifiers are a widely used class of power electronic devices. However, due to the strong nonlinearity of the rectifier device, the finisher generates a large number of harmonics, which will reduce the power factor of the rectifier and cause consequences such as AC voltage distortion. [0003] Generally speaking, there are two basic ideas for solving the harmonic pollution problem of rectifiers in the prior art. The first is passive harmonic suppression, which is mainly to install passive filters on the AC side of the power system or harmonic loads. Devices such as active filters or hybrid filters implement harmonic compensation to the current. However, in many occasions, the power level of the filter is not much different from that of the re...

Claims

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Application Information

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IPC IPC(8): H02M7/217H02M1/42
CPCY02B70/10
Inventor 孟凡刚高蕾马欣彤谭宇
Owner HARBIN INST OF TECH AT WEIHAI