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

Grid-connected control system for brushless doubly-fed machine

A doubly-fed motor and control system technology, applied in the direction of single-grid parallel feeding arrangement, etc., can solve the problems that the power winding cannot quickly and accurately track the grid side voltage, and the current impact of the power winding

Active Publication Date: 2017-01-11
EAST GRP CO LTD
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the grid-connection process of the traditional brushless doubly-fed motor, the replication and phase of the output voltage of the power winding cannot quickly and accurately track the grid-side voltage, so that in the switching process before and after grid-connection, the power winding of the brushless doubly-fed motor has Current shock

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
  • Grid-connected control system for brushless doubly-fed machine
  • Grid-connected control system for brushless doubly-fed machine
  • Grid-connected control system for brushless doubly-fed machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] figure 1 It is a structural block diagram of the grid-connected control system of the brushless doubly-fed motor in this embodiment. The grid-connected control system of the brushless doubly-fed motor is used for grid-connected control of the brushless doubly-fed motor 10 . The brushless doubly-fed motor 10 is connected to the grid 30 through a circuit breaker 20 . The brushless double-fed motor 10 includes a power winding and a control winding. see figure 1 , the grid-connected control system includes an amplitude control module 110, a phase control module 120, a PWM modulator 130, an in...

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 relates to a grid-connected control system for a brushless doubly-fed machine. The brushless doubly-fed machine comprises a power winding and a control winding. The grid-connected control system comprises an amplitude control module, a phase control module, a PWM modulator, an inverter and a control module. According to the above grid-connected control system for the brushless doubly-fed machine, the output voltage amplitudes and the phases before and after grid connection of the brushless doubly-fed machine can be ensured to track the power grid-side voltage amplitude and the phase, current impacts in the power winding before and after grid-connected switching can be successfully suppressed, and smooth transition of the switching process is realized.

Description

technical field [0001] The invention relates to the technical field of brushless double-fed motors, in particular to a grid-connected control system of brushless double-fed motors. Background technique [0002] During the grid-connection process of the traditional brushless doubly-fed motor, the replication and phase of the output voltage of the power winding cannot quickly and accurately track the grid-side voltage, so that in the switching process before and after grid-connection, the power winding of the brushless doubly-fed motor has current shock. Contents of the invention [0003] Based on this, it is necessary to provide a grid-connected control system of the brushless doubly-fed motor that does not generate a current impact during the grid-connected switching process. [0004] A grid-connected control system of a brushless double-fed motor, the brushless double-fed motor includes a power winding and a control winding, the grid-connected control system includes an ...

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): H02J3/42H02J3/44
CPCH02J3/42H02J3/44
Inventor 郭伟孔铭徐海波王雪帆
Owner EAST GRP 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