Tapped balance reactor with secondary side winding rectification function

A technology for balancing reactors and secondary windings, applied in the direction of output power conversion devices and electrical components, which can solve the problem of increasing current harmonics, output voltage ripple and system loss, increasing the complexity of rectifying devices, and small load adaptation range and other issues, to achieve the effect of reducing input current harmonics, reliable and easy to control, and reducing the difficulty of processing technology

Active Publication Date: 2017-05-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to solve the existing method of increasing the pulse number of the rectifier, which not only increases the complexity of the rectifier device, but also increases the current harmonics, output voltage ripple and system loss, and the existing method of increasing the pulse number of the rectifier The method has certain limitations, and the problem of small load adaptation range

Method used

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  • Tapped balance reactor with secondary side winding rectification function
  • Tapped balance reactor with secondary side winding rectification function
  • Tapped balance reactor with secondary side winding rectification function

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specific Embodiment approach 1

[0049] Specific implementation mode one: refer to figure 1 Describe this embodiment in detail. The tapped balance reactor with secondary winding rectification function described in this embodiment includes a balance reactor 1, a single-phase full-wave rectifier circuit 2, a diode D 11 and diode D 12 ,

[0050] The primary side coil of the balance reactor 1 has two taps, and the two tap points are point M and point N respectively, and the two taps are arranged symmetrically with the center of the primary side coil, and the secondary side of the balance reactor 1 The coil has a center tap,

[0051] The three-phase voltage input terminal of the grid is connected to the AC input terminal of the No. 1 rectifier module 3 and the AC input terminal of the No. 2 rectifier module 4 after passing through the phase-shifting transformer.

[0052] One end of the primary coil of the balance reactor 1 is connected to point A of the positive terminal of the No. 1 rectifier module 3, and the...

specific Embodiment approach 2

[0059] Specific embodiment 2: This embodiment is a further description of the tapped balance reactor with secondary winding rectification function described in specific embodiment 1. In this embodiment, the single-phase full-wave rectification circuit 2 includes a diode D 21 and diode D 22 ,

[0060] Diode D 21 The anode of the balance reactor 1 is connected to one end of the secondary coil, and the diode D 22 The anode of the balance reactor 1 is connected to the other end of the secondary coil;

[0061] Diode D 21 the cathode and diode D 22 The cathode is connected as the output end of the single-phase full-wave rectification circuit 2.

[0062] In this embodiment, on the premise of realizing the same system pulse number, the primary side of the balanced reactor in the present invention adopts a two-tap structure, and only uses the diode D 11 and diode D 12 , no control circuit is required, and the structure is simpler.

specific Embodiment approach 3

[0063] Specific embodiment 3: This embodiment is to further explain the tapped balance reactor with secondary winding rectification function described in specific embodiment 1. In this embodiment, the first rectification module 3 and the second rectification module 4 are both It is a three-phase half-bridge rectifier, a three-phase full-bridge rectifier, a rectifier group composed of a plurality of three-phase half-bridge rectifiers or a rectifier group composed of three-phase full-bridge rectifiers.

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Abstract

The invention discloses a tapped balance reactor with a secondary side winding rectification function, and relates to the technical field of power electronics. The tapped balance reactor aims to solve the problem of an existing method for increasing the pulse number of a rectifier that the complexity of a rectification device is increased and current harmonics, output voltage ripples and system loss are also increased and also solve the problem that the existing method for increasing the pulse number of the rectifier has certain boundedness and a small load adaptation range. One tap on the primary side coil of the balance reactor is connected with the anode of a diode D11; the other tap on the primary side coil of the balance reactor is connected with the anode of a diode D12; the cathode of the diode D11 is simultaneously connected with the cathode of the D12, the anode end of a load and the output end of a single-phase full wave rectification circuit; the cathode end of the load is simultaneously connected with the central tap of the secondary side coil of the balance reactor, the cathode end of an No.1 rectification module and the cathode end of an No.2 rectification module; and the output end of the secondary side coil of the balance reactor is connected with the single-phase full wave rectification circuit. The reactor is used for various types of rectification equipment.

Description

technical field [0001] The invention relates to a tapped balance reactor with secondary winding rectification function. It belongs to the technical field of power electronics. Background technique [0002] In industrial applications such as variable frequency speed regulation, electrolysis, electroplating, and aerospace, an adjustable DC power supply with low voltage and high current is often required. The use of high-power rectifiers with balanced reactors can reduce the number of rectifiers, reduce circuit losses, and improve efficiency. However, due to the nonlinearity of the rectifier itself, a large number of current harmonics will be generated, which will pollute the power grid. Increasing the pulse number of the rectifier can further reduce the harmonic content of the input current and the ripple coefficient of the output voltage. At present, there are three ways to increase the pulse number of the rectifier. The first is to increase the number of phase-shifting tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/12H02M1/14
CPCH02M1/12H02M1/14
Inventor 杨世彦徐可廉玉欣李渊李和宝
Owner HARBIN INST OF TECH
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