Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Communication circuit and communication system applied to cascaded multilevel inverter

A technology of cascading multi-level and communication circuits, applied in distribution line transmission systems, transmission systems, electrical components, etc., can solve the problems that power line carrier communication technology cannot be applied to multi-level inverters, etc.

Active Publication Date: 2018-11-20
SUNGROW POWER SUPPLY CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a communication circuit and communication system applied to cascaded multi-level inverters to solve the technical problem that power line carrier communication technology cannot be applied to multi-level inverters

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
  • Communication circuit and communication system applied to cascaded multilevel inverter
  • Communication circuit and communication system applied to cascaded multilevel inverter
  • Communication circuit and communication system applied to cascaded multilevel inverter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0067] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0068] See figure 1 , shows a structural block diagram of a communication system applied to cascaded multilevel inverters according to an embodiment of the present application, as shown in figure 1 As shown, the system includes a communication master node 1 and multiple slave node communication circuits 2 . Wherein, each slave node communic...

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 provides a communication circuit and a communication system applied to a cascaded multilevel inverter. When a slave node communication circuit transmits a high-frequency communication signal obtained by a slave node modulation circuit, a path of a slave node coupling circuit to flow to an inversion unit corresponding to the node presents high impedance at a high-frequency carrier frequency band, thereby preventing the high-frequency communication signal from flowing to the side of the inversion unit; and when the slave node communication circuit receives signals, a slave node demodulation circuit obtains differential signals from two bridge arms of the slave node coupling circuit, and the noise in the two bridge arms is the same, so that noise signals are counteracted after the differential signals are obtained to obtain the high-frequency communication signal. Therefore, the slave node coupling circuit can suppress the noise signals of the full frequency band, thereby improving the signal to noise ratio, ensuring communication reliability, and making a power line carrier communication mode be applicable to the cascaded multilevel inverter.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a communication circuit and a communication system applied to cascaded multilevel inverters. Background technique [0002] An inverter is a converter that converts DC power into AC power. A multi-level inverter means that the inverter can generate a variety of levels. The more levels, the smaller the harmonics, and the better the output sine wave effect. The cascaded multi-level inverter is composed of multiple inverter units connected in series, and some inverter units with lower power can be connected together to obtain an inverter with higher power through cascading. [0003] When the cascaded multi-level inverter actually works, the control module needs to control the output of each cascaded inverter unit. Therefore, a communication system is required between the control module and the inverter units at all levels to realize communication. [0004] At ...

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): H04B3/54H04B3/56H04B15/00
CPCH04B3/54H04B3/56H04B15/00
Inventor 许林冲徐君顾亦磊
Owner SUNGROW POWER SUPPLY CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com