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Three-phase three-level high-frequency chain matrix rectifier topology and its modulation method

A matrix converter, three-level technology, applied to electrical components, AC power input conversion to AC power output, AC power input conversion to DC power output, etc., can solve problems that affect the further application of the converter, and reduce the The content of low harmonics, the effect of reducing the withstand voltage level and high output voltage

Active Publication Date: 2020-10-02
YANSHAN UNIV
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Problems solved by technology

This affects the further application of this type of converter

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  • Three-phase three-level high-frequency chain matrix rectifier topology and its modulation method
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  • Three-phase three-level high-frequency chain matrix rectifier topology and its modulation method

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing:

[0025] Such as figure 1 As shown, the present invention sets forth a three-phase three-level high-frequency chain matrix rectifier topology, which is composed of a power supply network, a three-phase three-level matrix converter, a clamping link, a high-frequency transformer, a rectifying link, a filtering link and a load connection; Wherein, the input end of the three-phase three-level matrix converter is electrically connected to the power network, and the output end is electrically connected to the primary side of the transformer; each phase of the three-phase three-level matrix converter includes four sets of bidirectional switch units, The bidirectional switch unit is a common-emitter anti-series structure; the three-phase three-level matrix converter is also provided with a three-level structure in which the midpoint clamp diode and the midpoint clamp capacitor are re...

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Abstract

The invention discloses a three-phase three-level high-frequency link matrix rectifier topology and a modulation method thereof, and relates to the field of topology and modulation of electronic powerinverters. The three-phase three-level high-frequency link matrix rectifier topology comprises a three-phase three-level matrix inverter of which the input terminal is electrically connected with a power network and the output terminal is electrically connected with the primary side of a transformer; each phase of the three-phase three-level matrix inverter comprises four groups of two-way switchunits that are common-emitter series-opposition structures; and the three-phase three-level matrix inverter is also provided with a three-level structure in which a neutral point clamped diode and aneutral point clamped capacitor are replaced with two-way switch units respectively. From the view of circuit topology, the three-phase three-level high-frequency link matrix rectifier topology has advantages of large output capacity, high output voltage, low current harmonic content and the like by introducing more switch tubes. By adopting the decoupled and coupled dual-carrier SPWM modulation method, the voltage-withstanding level of components is beneficially reduced, the unit power factor in the grid side is realized, and the content of low-order harmonics of the input current is reduced.

Description

technical field [0001] The invention relates to the field of power electronic power converter topology and modulation, in particular to the topology of a three-phase three-level high-frequency chain matrix rectifier and its modulation method. Background technique [0002] A rectifier is a topological device that converts AC power into DC power. The biggest difference between high-frequency chain rectification technology and conventional rectification technology is that it uses high-frequency transformers instead of power-frequency transformers to achieve energy transfer and electrical isolation between input and output, thereby reducing the size, weight and noise of the transformer, reducing costs, and improving power. utilization, improving the working characteristics of the rectifier. [0003] The high-frequency chain matrix rectifier adds a high-frequency transformer and a post-stage bridge rectifier circuit on the basis of the matrix converter topology, which can achiev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/219H02M5/293H02M7/06H02M1/12
CPCH02M1/12H02M5/293H02M7/06H02M7/219
Inventor 闫朝阳康鸣宋雪微卫炳昂赵丁选徐春博刘爽
Owner YANSHAN UNIV
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