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Cascade multiple zero matrix converter

A matrix converter and multiplexing technology, which is applied in the direction of conversion equipment that can be converted to direct current without intermediate conversion, can solve the problems of technical public reporting, etc., and achieve the effect of strong versatility, simple structure, and easy implementation

Inactive Publication Date: 2007-06-27
SHANGHAI JIAO TONG UNIV
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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 multiplexed matrix converter 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 converter 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 to ...

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Abstract

This invention relates to a cascade multiple null-type matrix converter, in which, a general input filter is connected between a net and a step-down transformer to get sine wave input current by filter, the transformer has 3n secondary windings with Yn spliced midlines, the phase of all the three-phase windings is the same, the converter array is arrayed into 3 rows x n-lines by 3n null-type three-phase- mono-phase matrix converter units, each line of which is connected with a set of the secondary winding of the transformer correspondingly, the outputs of the rows are serial and three form a three-phase AC output, the general controller is responsible for controlling and adjusting the work of the entire system and connects with the branch controllers by signal cables to control work of every converter unit.

Description

technical field [0001] The present invention relates to a cascaded multiple zero-type matrix converter, in particular to a step-down transformer and a cascaded multiple three-phase- Single-phase zero-type matrix converters, cascaded multiple zero-type matrix converters capable of obtaining higher amplitude and adjustable amplitude and frequency three-phase AC voltages. It belongs to the technical field of power electronic equipment. Background technique [0002] In the field of medium and high-voltage high-power AC power transmission, including fans, pumps and other loads widely used in industrial and mining enterprises, traditionally, three-phase power frequency and high-voltage AC power is used to directly supply power to the motor. Without voltage regulation and frequency adjustment, the efficiency is often very low. , and poor starting and speed regulation performance. With the development of power electronic conversion technology, power electronic converters have been...

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Application Information

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IPC IPC(8): H02M5/16H02M5/10
Inventor 杨喜军
Owner SHANGHAI JIAO TONG UNIV
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