Fault traversing performance analog system of double-fed wind driven generator

A wind power generator and fault ride-through technology, which is applied in the direction of controlling generators, control systems, electrical components, etc., can solve problems such as lack of dynamic performance simulation functions, achieve a good man-machine interface, reduce system costs, and simplify hardware systems Effect

Active Publication Date: 2010-06-23
STATE GRID CORP OF CHINA +1
View PDF0 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing doubly-fed wind turbine simulation technology realizes the laboratory simulation of the characteristics of doubly-fed wind turbines without wind field environment, including wind field wind speed simulation, wind turbine characte

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
  • Fault traversing performance analog system of double-fed wind driven generator
  • Fault traversing performance analog system of double-fed wind driven generator
  • Fault traversing performance analog system of double-fed wind driven generator

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] Such as figure 1 Shown is the schematic diagram of the fault ride-through performance simulation system of the doubly-fed wind turbine. The experimental simulation system includes the motor system, the simulator main circuit and the DSP control system, and the upper computer monitoring system. The motor system includes one coaxially connected DC motor and one winding asynchronous motor. The main circuit structure of the simulator is an integrated platform composed of inverters, DC speed regulators, Crowbar circuits and voltage drop devices. The voltage sag generator is connected between the transformer and the doubly-fed motor, the frequency converter is connected between the output of the voltage drop and the rotor of the doubly-fed motor, the DC speed regulator is connected between the input of the voltage drop and the DC motor, Crowbar Connected to the rotor side of the doubly-fed motor. The structure of the inverter is as figure 2 , Is the back-to...

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 fault traversing performance analog system of a double-fed wind driven generator, comprising a motor system, an imitator main circuit, a DSP control system and an upper computer monitoring system based on Labview software. The motor system comprises a direct-current motor and a double-fed motor coaxially connected with each other; the imitator main circuit comprises a frequency converter, a direct-current speed regulator, a Crowbar circuit and a voltage spiller module, wherein a voltage spilling generator is connected between the power source and the double-fed motor; the frequency converter is connected between an output end of the voltage spiller and a rotor of the double-fed motor; the direct-current speed regulator is connected between the input end of the voltage spiller and the direct-current motor; and the Crowbar is connected at the rotor side of the double-fed motor. The system has complete analog function of the fan operational characteristic duringa fault of power grid, provides perfect test platform for the research of the double-fed motor and can be used for researching the performances of low-voltage traversing, support to weak grid, and the like.

Description

technical field [0001] The invention relates to a simulation system for researching the performance of a doubly-fed wind power generator, in particular to a simulation system for researching the fault ride-through performance of a doubly-fed wind power generator. Background technique [0002] The field experiment of directly connecting the generator to the wind turbine is not only uneconomical, but also limited by natural conditions. Therefore, many laboratory simulation schemes of wind turbines and generators have been proposed to shorten the research time of wind turbine control performance. The existing doubly-fed wind turbine simulation technology realizes the laboratory simulation of the characteristics of doubly-fed wind turbines without wind field environment, including wind field wind speed simulation, wind turbine characteristics simulation, and doubly-fed generator driven by dual PWM inverters. etc., but they still do not have the function of simulating the dynami...

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): H02P9/00H02P9/10H02J3/38
Inventor 宋少群王毅付超
Owner STATE GRID CORP OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products