Input current waveform optimization topological structure of active third harmonic injection matrix converter

A matrix converter and input current technology, applied in the direction of converting AC power input to AC power output, electrical components, output power conversion devices, etc., can solve problems such as input filter oscillation, instantaneous value uncertainty, input current distortion, etc. , to achieve the effects of current ripple reduction, distortion suppression, and increased damping resistance

Active Publication Date: 2018-08-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the two are switched, because the instantaneous value of the bus chopping current at the commutation point is uncertain, the switching between the busbar chopp

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Input current waveform optimization topological structure of active third harmonic injection matrix converter
  • Input current waveform optimization topological structure of active third harmonic injection matrix converter
  • Input current waveform optimization topological structure of active third harmonic injection matrix converter

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] The technical solutions and beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] The improved topology of the active third harmonic injection matrix converter proposed by the present invention is shown in the attached figure 2 and attached image 3 shown. The three-phase AC power supply is connected to the three-phase input terminal of the voltage selector through the input filter. The x and z ends of the voltage selector IVS are connected to the DC terminals p, n and y of the current source inverter CSI through the bus filter. It is connected to the bidirectional switch through the third harmonic injection circuit, and the three-phase AC load is connected to the three-phase AC output terminal of the current source inverter CSI through the output filter inductor.

[0027] attached figure 2 The bus filter in includes two filter inductors L x , L z and a filter capacitor C pn . Filter ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an input current waveform optimization topological structure of an active third harmonic injection matrix converter. The input current waveform optimization topological structure comprises a three-phase alternating current power supply, an input filler, a voltage selector IVS, a bus filter, a third harmonic injection circuit, a current type inverter CSI, a three-phase alternating current load, and an output filter inductor; the voltage selector comprises a rectifying stage and three bidirectional switches; the rectifying stage comprises three bridge arms formed by an all-control type device; the third harmonic injection circuit comprises a y bridge arm formed by the all-control type device, and a harmonic injection current filter inductor Ly; and the topological structure has the bus filter on a bus. By virtue of the topological structure, input current sector switching distortion caused by switching of a high frequency bus current and a low frequency harmonic injection current of the active third harmonic injection matrix converter can be suppressed effectively, so that the input current waveform can be improved.

Description

technical field [0001] The invention relates to an electric energy conversion device, in particular to a topological structure capable of improving the input current waveform of an active third harmonic injection matrix converter. Background technique [0002] Matrix converter (MC) is an AC-AC power converter that does not require large-capacity energy storage components. It has the advantages of small size, light weight, high reliability, bidirectional flow of energy, and sinusoidal input and output. It is widely used in the world been widely studied. Two-stage matrix converter is a subclass of matrix converter, which has the advantages of simple clamping circuit and easy implementation of commutation control strategy, but has the limitations of small input power factor angle control range and weak reactive power control capability. In this context, a new type of matrix converter based on active third harmonic injection technology, the active third harmonic injection matri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02M5/458H02M1/14
CPCH02M1/14H02M5/4585
Inventor 陆程佳周波雷家兴朱奕琦杨岚
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap