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

Decoupling controller and method, power conversion device and motor driver

A technology of decoupling controller and conversion circuit, which is used in output power conversion devices, conversion of AC power input to DC power output, electrical components, etc. It can solve problems such as system instability, improve stability, and solve oscillation problems. , Increase the effect of system damping

Pending Publication Date: 2022-07-05
SHENZHEN INOVANCE TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a decoupling controller, method, power conversion device and motor driver, aiming to solve the problem of system instability due to feedback of differential mode capacitance current only when controlling the power 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
  • Decoupling controller and method, power conversion device and motor driver
  • Decoupling controller and method, power conversion device and motor driver
  • Decoupling controller and method, power conversion device and motor driver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0054] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompa...

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 decoupling controller and method, a power conversion device and a motor driver. The decoupling controller is used for controlling a power conversion circuit. Comprising a current decoupling module, a common mode control module, a differential mode control module, a voltage decoupling module and a modulation module. The current decoupling module determines a common-mode current feedback value and a differential-mode current feedback value in response to the feedback current of the power conversion circuit received by the input end of the current decoupling module; the common-mode control module is used for determining a common-mode voltage given value according to the common-mode current feedback value; the differential mode control module is used for determining a differential mode voltage given value according to the differential mode current feedback value; the voltage decoupling module is used for determining a bridge arm control voltage for controlling each bridge arm in the power conversion circuit according to the common-mode voltage given value and the differential-mode voltage given value; and the modulation module is used for determining a control signal for controlling the power conversion circuit according to the bridge arm control voltage. The system damping is increased, and the stability of the system is improved.

Description

technical field [0001] The invention relates to the field of motor control, in particular to a decoupling controller, a method, a power conversion device and a motor driver. Background technique [0002] In precision motor drives, such as voice coil motor drives, it is usually necessary to add an LC filter to reduce the output current ripple. figure 1 Shown is a power converter with an LC filter on the output side. Usually, the LC filter is only connected to a differential mode capacitor (C f ), due to the existence of the LC filter, the resonance peak will be generated, resulting in the instability of the system. At present, when controlling the power converter with LC filter, the differential mode capacitor current feedback is generally introduced to increase the system damping and realize stable control. [0003] However, only the differential mode capacitor filter is added in the above scheme, which can only filter out the differential mode harmonics and noise in the c...

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): H02M7/5387H02M1/12
CPCH02M7/53871H02M1/126
Inventor 张海林张文农
Owner SHENZHEN INOVANCE TECH
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