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

A common-mode voltage suppression method and device using virtual pulse vibration vector

A technology of vector direction and pulse vibration, which is applied in the field of direct torque control of matrix converters, can solve the problems of increasing the volume and weight of the motor system, achieve the effects of ensuring power density, suppressing common-mode voltage, and solving both volume and weight increases

Active Publication Date: 2022-06-24
HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the technical problem of increasing the volume and weight of the motor system in the prior art by providing a common-mode voltage suppression method and device using a virtual pulse vibration vector, and realizes the technical effect of ensuring the power density of the matrix converter

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
  • A common-mode voltage suppression method and device using virtual pulse vibration vector
  • A common-mode voltage suppression method and device using virtual pulse vibration vector
  • A common-mode voltage suppression method and device using virtual pulse vibration vector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0088] The embodiment of the present invention solves the technical problem of increasing the volume and weight of the motor system in the prior art by providing a common-mode voltage suppression method and device using a virtual pulse vibration vector, and realizes the technology of ensuring the power density of the matrix converter Effect.

[0089] The technical solution in the embodiment of the present invention is to solve the above-mentioned problems, and the general idea is as follows:

[0090] Synthesize the virtual pulse vibration vector with the rotation vector with the opposite rotation direction, and establish a switch table using the virtual pulse vibration vector, select the virtual pulse vibration vector synthesized by the rotation vector by querying the switch table, and use the characteristic that the common mode voltage of the MC rotation vector is zero , the common mode voltage can be effectively suppressed, and at the same time, no hardware device is added, ...

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 a common-mode voltage suppression method and device using a virtual pulse vibration vector. Synthesize the virtual pulse vibration vector with the rotation vector with the opposite rotation direction, and establish a switch table using the virtual pulse vibration vector, select the virtual pulse vibration vector synthesized by the rotation vector by querying the switch table, and use the characteristic that the common mode voltage of the MC rotation vector is zero , the common mode voltage can be effectively suppressed, and at the same time, no hardware device is added, which avoids the increase of volume and weight of the motor system as in the prior art, and ensures the power density of the matrix converter. Moreover, it also maintains the advantages of DTC independent of motor parameters, simple calculation, and good dynamic performance.

Description

technical field [0001] The invention relates to the technical field of power converter control for driving motors, in particular to a method and device for direct torque control of a matrix converter capable of suppressing common-mode voltage. Background technique [0002] The matrix converter (MC)-fed permanent magnet synchronous motor (PMSM) system combines the advantages of high power density, good speed regulation performance of PMSM, compact structure of MC, and small harmonic pollution to the power grid. Therefore, it is widely used in the high-end equipment manufacturing industry has been widely used. Direct torque control (DTC) has the advantages of simple control structure, less influence by motor parameters, and good dynamic performance. It has natural advantages when applied to MC with a large number and variety of state space vectors. Existing MC-DTC strategies usually only use the valid vector of MC, or the combination of valid vector and zero vector, and the r...

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 Patents(China)
IPC IPC(8): H02P21/30H02P27/06H02M1/12H02M1/42
CPCH02P21/30H02P27/06H02M1/12H02M1/42Y02B70/10
Inventor 邓惟滔谢文武彭鑫严太山朱鹏
Owner HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
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