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Three-phase rectifier topology circuit and control method thereof and device thereof

A topology circuit and control method technology, applied in the direction of output power conversion device, AC power input conversion to DC power output, electrical components, etc., can solve the problems of difficult design of inductors, heating of inductors, design complexity and cost increase, etc.

Active Publication Date: 2013-05-08
BEIJING DYNAMIC POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inductor of the existing three-phase full bridge passes a large current, which causes serious heating, which makes the design of the inductor more difficult, and needs to add a current sensor, which increases the complexity and cost of the design

Method used

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  • Three-phase rectifier topology circuit and control method thereof and device thereof
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  • Three-phase rectifier topology circuit and control method thereof and device thereof

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Embodiment Construction

[0032] A three-phase converter topology circuit, a control method and a device thereof provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] like figure 1 As shown, it is a three-phase converter topology circuit diagram provided by an embodiment of the present invention; the three-phase converter topology circuit includes: six power frequency switch tubes S1, S2, S3, S4, S5, S6, six high Frequency switch tubes HS1, HS2, HS3, HS4, HS5, HS6 and three inductors LA, LB, LC;

[0034] The three-phase AC input terminal A is respectively connected with the E terminal of the power frequency switch tube S1, the C terminal of the power frequency switch tube S2 and one end of the inductor LA;

[0035] The C terminal of the power frequency switch tube S1 is connected to the DC positive output terminal; the E terminal of the power frequency switch tube S2 is connected to the DC negative output terminal; ...

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Abstract

The invention discloses a three-phase rectifier topology circuit and a control method thereof and a device thereof. The circuit control method includes starting self detection, wherein the self detection includes obtaining a section partition range and a sampling cycle, obtaining three-phase alternative input voltage Ua, Ub and Uc and load voltage U1oad, ensuring sections of the three-phase alternative input voltage according to the section partition range, obtaining working states of a current circuit, wherein the working states includes a rectifying working state or a inversion working state, and controlling breakover of corresponding switch pipes according to the three-phase alternative input voltage Ua, Ub and Uc, the load voltage U1oad and the ensured section of the three-phase alternative input voltage and the working states of the current circuit. According to the circuit, the circuit control method and the circuit device, not only can inductance loss be reduced, but also converse efficiency of the three-phase rectifier circuit can be improved.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a three-phase converter topology circuit and a control method and device thereof. Background technique [0002] With the continuous development of power electronics technology, three-phase converter technology, as an important part of power electronics technology, has become a research hotspot in the industry. The existing commonly used topologies are mainly three-phase full-bridge topologies. In this topology, the current of each phase passes completely through the input inductor, and a current sensor is required to sample the current. [0003] In the process of realizing the three-phase converter device with the existing solution, the inventor found that the following problems exist in the prior art: [0004] The large passing current of the inductance of the existing three-phase full bridge causes serious heat generation, which makes the design of the inductance mo...

Claims

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Application Information

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IPC IPC(8): H02M7/219
Inventor 张文学胡勇
Owner BEIJING DYNAMIC POWER CO LTD
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