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Cascade multiple zero matrix rectifier

A matrix rectifier and multiplexing technology, which is applied to the conversion equipment for intermediate conversion to DC conversion, etc., can solve the problems of inconvenient adjustment of the magnitude and polarity of DC voltage, lack of ability to flow energy in both directions, and low input power factor. The effect of good transformation effect, simple structure and low total cost

Inactive Publication Date: 2007-06-27
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The disadvantages of these technical solutions are that either the input power factor is low, or the control is complex, and they do not have the ability to flow energy in both directions, and electrolytic capacitors with a short life are required as energy storage components, and the secondary winding of the transformer also needs to be phase-shifted. Not easy to adjust with polarity
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  • Cascade multiple zero matrix rectifier
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Embodiment Construction

[0018] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The following examples are further illustrations of the present invention, but do not constitute a limitation of the present invention.

[0019] Taking the 5-fold cascaded multi-zeroing matrix rectifier designed by the present invention as an example, the structure is shown in Figure 1, which consists of a total input filter 1, a step-down transformer 2, a rectifier array 3 and a total controller 4. The total input filter 1 is composed of three filter inductors and three filter capacitors. The input ends of the three filter inductors are connected to the grid, and the output ends are connected to the three-phase primary winding of the step-down transformer 2. One end of the three filter capacitors is respectively connected to the three Only the output ends of the filter inductors are connected, and the other ends are connected t...

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Abstract

This invention relates to a cascade multiple zero-type matrix rectifier, in which, a general input filter is connected between a net and a step-down transformer to get sine-wave input current, the step-down transformer includes n secondary windings with Yn spliced mid lines, the phase of all the three-phase windings is the same, the rectifier array is arrayed in a 1 row x n lines by n zero-matrix rectifier units, each line of which is connected with the seconday winding of the step-down transfornmer, and the outputs of the rectifier units are serial orderly to form a DC output, the general controller is responsible for regulating work of the entire system and connected with the branch controllers by signal cables to control the work of the rectifier units in the array.

Description

technical field [0001] The invention relates to a cascaded multiple zero-type matrix rectifier, in particular to a step-down transformer and a cascaded multiple zero-type matrix rectifier suitable for three-phase high-voltage direct current power supply and adopting multiple secondary windings, A cascaded multiple zeroing matrix rectifier capable of obtaining higher amplitude and adjustable amplitude DC voltage. It belongs to the technical field of power electronic equipment. Background technique [0002] In the field of medium and high-voltage high-power DC power supply, including DC motor drive, high-voltage DC transmission, DC power supply for multi-level inverter and DC power supply for laser generation, etc., in order to obtain high DC voltage and high input power factor, multiple A secondary winding transformer-uncontrolled rectifier-electrolytic capacitor bank technical scheme, wherein according to different specific schemes, the transformer can use a secondary windi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/42
Inventor 杨喜军
Owner SHANGHAI JIAO TONG UNIV
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