Voltage switching instruction based decoupling-coupling SVM demodulation method of matrix converter

A matrix converter and modulation method technology, applied in the direction of converting AC power input to DC power output, electrical components, output power conversion devices, etc. Reduce the control flexibility of the matrix converter, etc., to achieve the effect of simple and easy modulation method, improved DC voltage utilization, and strong adaptability

Inactive Publication Date: 2016-12-07
YANSHAN UNIV
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the large number of switches in the matrix converter and the back-to-back connection of the bidirectional switches, most of the control strategies are relatively complicated and most of them adopt the unified control of the bidirectional switches, which greatly reduces the flexibility of the control of the matrix converter. However, it is rare to realize the multi-polarity DC output of the voltage mode non-isolated matrix rectifier

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
  • Voltage switching instruction based decoupling-coupling SVM demodulation method of matrix converter
  • Voltage switching instruction based decoupling-coupling SVM demodulation method of matrix converter
  • Voltage switching instruction based decoupling-coupling SVM demodulation method of matrix converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing:

[0021] The circuit topology of three-phase voltage type non-isolated matrix rectifier is as follows: figure 1 Shown:

[0022] figure 1 In the three-phase grid electromotive force u a , u b , u c respectively with the input filter inductor L a , L b , L c connected, the input filter inductor L a , L b , L c Respectively with the controllable switch tube S ap1 , S an4 , S ap4 , S an1 A-phase bridge arms composed of back-to-back, controllable switch tube S ap3 , S an6 , S ap6 , S an3 B-phase bridge arms composed of back-to-back, controllable switch tube S ap5 , S an2 , S ap2 , S an5 The midpoints of the C-phase bridge arms formed back to back are connected. Controllable switch tube S ap1 , S ap3 , S ap5 connected to the collector, the controllable switch S an1 , S an3 , S an5 The collectors of the two are connected, and then the connected collectors...

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 relates to a voltage switching instruction based decoupling-coupling SVM demodulation method of a matrix converter. A bidirectional controllable switch circuit is decomposed to a one-way controllable switch circuit by means of a decoupling-coupling idea, and thus, the matrix converter can be decomposed to a positive group of general voltage type converters and a negative group of general voltage type converters; and with the adoption of a voltage type six-section space vector method, appropriate coupling logic synthesis is performed on the obtained SVM signal and a voltage positive-negative switching instruction signal to obtain flexible and independent control on the bidirectional switch of the matrix converter, thus, a three-phase voltage type non-isolation matrix rectifier achieves functions of AC input and DC output by a simple control logic, and the matrix converter can have functions of positive DC output and negative DC output. The method has the advantages that the control method is simple, the positive DC output voltage polarity and the negative DC output voltage polarity of the matrix rectifier can be achieved, the adaptability to a load is high, the DC voltage utilization rate is improved, the bidirectional flow of switching frequency energy is reduced, and a compact structure and high efficiency are achieved.

Description

technical field [0001] The invention relates to the field of modulation control of power electronic power converters, in particular to a matrix converter decoupling SVM modulation method based on voltage positive and negative switching instruction signals. Background technique [0002] A rectifier is a topological device that converts AC power into DC power. The voltage-type non-isolated matrix rectifier is evolved from the AC three-phase-three-phase converter. The voltage-type non-isolated matrix rectifier evolved on the basis of the matrix converter known as the universal converter. Compared with the traditional voltage-type PWM rectifiers have obvious advantages, such as wider voltage conversion range, output of positive and negative polarity voltage, stronger adaptability to load, bidirectional flow of energy, compact structure and high efficiency. [0003] However, due to the large number of switches in the matrix converter and the back-to-back connection of the bidire...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/219
CPCH02M7/219
Inventor 宋俊杰吴晓雨闫朝阳郑倩男李建霞
Owner YANSHAN UNIV
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