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

Generating method of three-level harmonic-trapping width-modulation pulse and pulse generator

A technology of pulse generator and pulse width modulation, which is applied in the direction of electrical components, output power conversion device, AC power input conversion to DC power output, etc.

Inactive Publication Date: 2002-12-11
ZHONGSHAN MINGYANG ELECTRIC
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ABB, GE, Simens, Robincon and other companies already have preliminary products of AC / DC / AC frequency conversion speed regulation systems, but the pulse generation technology as its core part is strictly confidential, and has not been published in published papers and related patents

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
  • Generating method of three-level harmonic-trapping width-modulation pulse and pulse generator
  • Generating method of three-level harmonic-trapping width-modulation pulse and pulse generator
  • Generating method of three-level harmonic-trapping width-modulation pulse and pulse generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] The medium and high voltage frequency conversion speed control device applicable to the present invention mainly includes main circuit, monitoring system, pulse generation and distribution, etc., wherein the pulse generator is an important channel connecting the monitoring system and the main circuit. It receives the control command issued by the monitoring system, forms and sends out the required 6-way pulse sequence, and controls the turn-on and turn-off of the integrated gate commutation thyristor IGCT as the switching device in the main circuit, so as to form the required frequency and amplitude output voltage and current. The frequency conversion device applicable to the present invention adopts such as image 3 The three-level inverter structure shown, the control strategy is selected harmonic elimination pulse width modulation (PWM) technology. The states of switching devices 1 and 3, 2 and 4 on each bridge arm are complementary (for example, when A1 is turned o...

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 present invention relates to AC / DC / AC frequency-varying speed regulating technology. The present invention includes the steps of: generating switching pulse sequence in required format based on the required switching function modulation ratio and pulse frequency, receiving and judging the control command word of monitoring host computer, generating and sending six channel pulse sequence for normal control based on the required modulation ratio and pulse frequency and other steps. Then, is proposed three-level harmonic-trapping modulation pulse generator based digital signal processor. Thepresent invention is suitable for high and middle voltage frequency-varying speed regulator and can elimiante high order harmonics, reduce switching loss, prolong the life of switching device and ensure enough output power.

Description

technical field [0001] A three-level selected harmonic elimination pulse width modulation pulse generation method and pulse generator belong to AC / DC / AC frequency conversion speed regulation system [0002] technology field. Background technique [0003] High-voltage frequency conversion technology is to convert the fixed frequency and fixed amplitude voltage into variable frequency and variable amplitude electric energy, so that the electromagnetic torque generated by the electric energy can be flexibly matched with the mechanical torque of the load driven by it, so as to obtain better driving characteristics and maximize the electric energy. It is a high-tech energy-saving technology with high utilization rate, and it can also be regarded as user power technology DFACTS (Custom Power), which is an extension of the application of power technology FACTS in power distribution systems. ABB, GE, Simens, Robincon and other companies already have preliminary products of AC / DC / AC...

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): H02M7/521H02M7/525H02M7/527
Inventor 谢小荣张新强陈远华卢章辉
Owner ZHONGSHAN MINGYANG ELECTRIC
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