IGBT-based voltage-adjustable PWM rectifier topology

A rectifier and adjustable voltage technology, which is applied in the direction of irreversible AC power input conversion to DC power output, output power conversion device, AC power input conversion to DC power output, etc., which can solve the problem that PWM rectifier cannot adjust voltage, etc. Achieve high power factor and low harmonic pollution
CN108400718AInactive Publication Date: 2018-08-14XIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN UNIV OF TECH
Publication Date
2018-08-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an IGBT-based voltage-adjustable PWM rectifier topology, comprising a three-phase AC power supply, wherein the three-phase AC power supply is connected to an AC side filter circuit, the output end of the AC side filter circuit is connected to a full control device, the full control device comprises three groups of IGBTs, each group of IGBTs include two power switch tubes that are in reverse series connection, the output end of the full control device is connected to a diode rectifier bridge, the output end of the diode rectifier bridge is connected to the filter circuit, and the filter circuit is connected to the load. According to the IGBT-based voltage-adjustable PWM rectifier topology disclosed by the invention, the problem that a PWM rectifier cannot adjust thevoltage in the prior art can be solved, two trigger modes that are PWM and SVPWM are adopted, the DC output voltage can be adjusted by 0-100%, and in the SVPWM trigger mode, the grid-side sinusoidalcurrent can be realized, and the effects of small grid-side harmonic pollution and high grid-side power factor can be achieved.
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Description

technical field

[0001] The invention belongs to the technical field of power electronics and relates to an IGBT-based voltage-adjustable PWM rectifier topology. Background technique

[0002] With the emergence of fully-controlled high-power switching devices and the improvement of PWM control technology, PWM rectifiers have been more widely used because of their low harmonics of grid-side current and high power factor. At present, the topologies of three-phase PWM rectifiers commonly used at home and abroad include two-level PWM rectifier topology, diode-clamped three-level rectifier topology, and two-quadrant mid-point clamped three-level PWM rectifier topology. Among them, the topology of the two-level PWM rectifier is composed of 6 fully-controlled devices, the output of the DC side is stable, the waveform of the AC side is high in sinusoidal degree, the grid side is pollution-free, and the power factor of the grid side is high, which is suitable for the situation of smal...

Claims

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