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60-degree coordinate system-based three-phase VIENNA rectifier and control method

A coordinate system and rectifier technology, applied in output power conversion devices, AC networks to reduce harmonics/ripples, AC power input conversion to DC power output, etc., can solve high harmonic components on the grid side and poor system stability , low power factor of the power grid and other issues

Inactive Publication Date: 2015-08-12
HARBIN UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of low grid power factor, high harmonic content on the grid side and poor system stability in the prior art

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  • 60-degree coordinate system-based three-phase VIENNA rectifier and control method
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  • 60-degree coordinate system-based three-phase VIENNA rectifier and control method

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Embodiment Construction

[0054] The specific implementation of the present invention is described in conjunction with the accompanying drawings. The three-phase VIENNA rectifier based on the 60° coordinate system of the present invention includes an inductor group, a main circuit, a DSP control system, a drive module, a grid-side voltage signal processing circuit, and a grid-side current A signal processing circuit and a DC voltage sampling module, the inductance group includes a first inductance, a second inductance and a third inductance, the main circuit includes a three-phase VIENNA rectifier circuit, and the power grid passes through the first inductance La, the second inductance Lb and the third inductance respectively The inductor Lc is connected to the input terminal of the three-phase VIENNA rectifier circuit, the input terminal of the grid-side voltage signal processing circuit is connected between the grid and the inductor group, and the input terminal of the grid-side current signal processi...

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Abstract

The invention relates to a 60-degree coordinate system-based three-phase VIENNA rectifier and a control method, and specifically relates to a three-level VIENNA rectifier and a control method thereof. The invention aims to solve the problems of low power grid power factor, high grid side harmonic component and poor system stability in the prior art. The 60-degree coordinate system-based three-phase VIENNA rectifier includes an inductor group, a main circuit, a DSP control system, a drive module, a grid side voltage signal processing circuit, a grid side current signal processing circuit, a direct voltage sampling module and a load, the inductor group includes a first inductor, a second inductor and a third inductor, the main circuit includes a three-phase VIENNA rectifier circuit, a power grid is connected with an input end of the three-phase VIENNA rectifier circuit through the first inductor, the second inductor and the third inductor, and an output end of the three-phase VIENNA rectifier circuit is connected with the load. The device and the method provided by the invention improve the power factor of the power grid, improve system response speed, and enhance system stability.

Description

technical field [0001] The invention relates to a three-phase VIENNA rectifier and a control method thereof, in particular to a three-phase VIENNA rectifier based on a 60° coordinate system and a control method thereof, and belongs to the technical field of high-efficiency rectifiers. Background technique [0002] With the development of science and technology, a large number of power electronic devices are used in daily life, resulting in the decline of power quality. In order to improve the power factor of the power grid and reduce the total harmonic distortion rate of the current, the PWM rectification technology has been paid more and more attention by people. Due to the increase in voltage and power levels, it is difficult for traditional two-level converters to achieve high voltage and high power, and the device's ability to withstand voltage and current is also limited. [0003] Compared with the two-level PWM converter, the three-level PWM can effectively reduce the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/219H02H7/125H02J3/01
CPCY02E40/40
Inventor 高晗璎郭威林勺博刘端增李伟力
Owner HARBIN UNIV OF SCI & TECH
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