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

Disturbance voltage attenuation device

A technology for interfering voltage and attenuating devices, which is applied to output power conversion devices, electrical components, etc., can solve the problems of transistor withstand voltage level limitation, insufficient, and unsatisfactory noise suppression effect, so as to reduce the volume and reduce the workload. , the effect of reducing manufacturing costs

Active Publication Date: 2009-09-09
XI AN JIAOTONG UNIV
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The compensation method using active components such as transistors has strict restrictions on the withstand voltage level of transistors, and the noise suppression effect is not ideal
Therefore, although the existing technology has a certain suppression effect on the common mode voltage, it is not sufficient enough to completely eliminate the common mode voltage

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
  • Disturbance voltage attenuation device
  • Disturbance voltage attenuation device
  • Disturbance voltage attenuation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] see figure 1 , the present invention includes a passive LC filter device connected in series between the inverter and the active control circuit close to the output end of the inverter for the initial attenuation of the interference voltage, and a series connection between the passive LC filter and the motor It is an active closed-loop control circuit for dynamic tracking and compensation of disturbance voltage close to the AC input end of the motor.

[0018] see figure 2 , the passive LC filtering device of the present invention includes a differential mode filter connected to the output end of the inverter for limiting the overcurrent of the main circuit and a common mode filter connected to the differential mode filter;

[0019] The differential mode filter includes a differential mode inductor L DM and in parallel with the resistor R D , the differential mode filter is connected in series in the three-phase main circuit of the inverter AC output, the differentia...

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

A disturbance voltage attenuation device can lead high-frequency disturbance voltage in an inverter driving motor system to be obviously inhibited through adopting the effective connection of a passive LC filter network and an active closed loop control circuit. Meanwhile, the disturbance inhibition function of a passive wave filter ensures that the voltage withstand class of an active component is not required overhigh and the cost is lowered; and the closed loop control and the dynamic tracking compensation of the active circuit to the disturbance voltage also lead the design parameter and the volume of the passive component to be greatly reduced.

Description

technical field [0001] The invention belongs to the field of power electronics research, in particular to an interference voltage attenuation device used for suppressing the AC output side of an inverter in an inverter-driven motor system. Background technique [0002] At the same time that power electronic devices are widely used and developed rapidly, electromagnetic compatibility issues are gradually being paid attention to. In the AC motor system driven by the inverter, the output voltage and current of the inverter change sharply due to the high-speed switching characteristics of the IGBT, and the output of the inverter contains a high common-mode voltage, which forms shaft voltage and shaft current, causing a series of adverse effects. At present, widely used passive suppression methods such as reactors and capacitors are generally too large in size. The compensation method using active components such as transistors has strict restrictions on the withstand voltage l...

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): H02M1/44
Inventor 陈文洁杨旭王跃王兆安
Owner XI AN JIAOTONG UNIV
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