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Buck matrix-type rectifier with boost switch, and operation thereof during one-phase loss

A boost switch and rectifier technology, which is applied to the operation during one-phase loss, isolates the step-down matrix rectifier field, can solve the problems of reducing the total power density of the matrix rectifier circuit, and achieves preventing the drop of the output voltage, reducing the current stress, The effect of reducing the output capacitance

Pending Publication Date: 2020-12-11
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve this problem, output capacitors of relatively high value have been used to attempt to maintain the output voltage when one phase is lost, disconnected or shorted, but this including a larger output capacitor would significantly reduce the overall power density of the matrix rectifier circuit and prevent matrix rectifiers with compact dimensions

Method used

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  • Buck matrix-type rectifier with boost switch, and operation thereof during one-phase loss
  • Buck matrix-type rectifier with boost switch, and operation thereof during one-phase loss
  • Buck matrix-type rectifier with boost switch, and operation thereof during one-phase loss

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Embodiment Construction

[0023] will now refer to Figure 2 to Figure 7 (d) Describe in detail preferred embodiments of the present invention. Please note that the following description is illustrative rather than restrictive in all respects, and should not be construed as limiting the application or use of the preferred embodiments of the present invention in any way.

[0024] figure 2 is a circuit diagram of an isolated buck matrix rectifier with a boost switch according to a preferred embodiment of the present invention. In contrast to the isolated step-down matrix rectifier shown in Figure 1, figure 2 The isolated buck matrix rectifier shown includes a boost switch.

[0025] figure 2 The illustrated isolated step-down matrix rectifier includes a 3-phase to 1-phase matrix converter electrically connected to the rectifier. refer to figure 2 , "line side" or "primary side" refers to the part of the circuit to the left of the transformer Tr that is connected to the input line voltage v a , v b...

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Abstract

A power supply circuit includes at least two input terminals that receive an input voltage, a transformer including a primary side electrically connected to the input voltage, a rectifier electricallyconnected to a secondary side of the transformer, and a boost switch electrically connected in parallel with the rectifier and a pair of output voltage terminals that include a first output voltage terminal and a second output voltage terminal. The input voltage is electrically connected to an AC source, and each of the at least two input terminals receives a different phase of the AC source.

Description

technical field [0001] This invention relates to isolated matrix rectifiers. More specifically, the present invention relates to an isolated step-down matrix rectifier with a boost switch, and to the operation of the rectifier during a loss of one phase of the input voltage. Background technique [0002] FIG. 1 is a circuit diagram of an isolated step-down matrix rectifier according to the related art. The matrix rectifier shown in Figure 1 includes a 3-phase to 1-phase matrix converter electrically connected to the rectifier. Referring to Figure 1, "line side" or "primary side" refers to the part of the circuit located to the left of the transformer Tr, which is electrically connected to the input line voltage v a , v b and v c , and the input line current i of each of the three phases A, B, and C a i b and i c , and "load side" or "secondary side" refers to the part of the circuit on the right side of the transformer Tr that is electrically connected to the output v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/219H02M3/156H02M1/00
CPCH02M5/2932H02M5/297H02M1/007H02M7/4807H02M3/158H02M7/06H02M1/325H02M7/219
Inventor 贾汉吉尔·阿夫沙里安龚冰许德伟
Owner MURATA MFG CO LTD