System and method for inhibiting vibration of direct-driven wind generator set

A technology for wind turbines and generators, applied in the direction of controlling generators, control systems, electrical components, etc., can solve problems such as inability to generate torque, and achieve the effects of suppressing vibration, increasing damping, and achieving practical value and practical significance.

Inactive Publication Date: 2009-10-14
XINJIANG GOLDWIND SCI & TECH
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, since the permanent magnet synchronous generator itself has no damping w

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
  • System and method for inhibiting vibration of direct-driven wind generator set
  • System and method for inhibiting vibration of direct-driven wind generator set
  • System and method for inhibiting vibration of direct-driven wind generator set

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Refer below figure 1 An explanation is made to the control system and method of the present invention:

[0032] First, using speed sensorless vector control, according to the three-phase current i output by the generator u , i v , i w get shaft frequency f r , that is, the rotation speed of the rotor magnetic field, and integrating it, the position angle θ of the rotor magnetic field can be obtained r .

[0033] Second, according to this position angle θ r , through the generator stator three-phase current i u , i v , i w Transform the three-phase stationary coordinate system to the two-phase synchronous rotating coordinate system to obtain the torque current component I q and excitation current component I d , these two components are used as the feedback quantity of the current closed-loop control.

[0034] Thirdly, according to its control strategy, the main wind turbine controller (WTC) will issue a torque command T corresponding to each speed from_WTC ...

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 provides a system and a method for inhibiting the vibration of a direct-driven wind generator set, pertaining to the field of the control of a million-Watt class direct-driven permanent-magnet wind generating set. The system comprises a flow conversion device and a wind turbine host-controller (WTC), wherein the flow conversion device comprises a convertor, a band-pass filter and a damping controller. The convertor is a full-power convertor, and the rectification process of the convertor is an active rectification method comprising a controllable device IGBT; and rotor field-oriented control (FOC) is adopted. The invention increases the band-pass filter and the damping controller in the flow conversion device so that the damping controller outputs a compensating torque when the generating set vibrates, thereby being capable of effectively reducing the vibration of the generating set and prolonging the service life of the generating set.

Description

technical field [0001] The invention relates to a system and method for suppressing the vibration of a direct-drive wind power generating set, and belongs to the control field of a megawatt-level permanent magnet direct-drive wind power generating set. Background technique [0002] For the direct-drive permanent magnet wind turbine with variable speed and variable pitch, the impeller is directly connected to the generator, and the transmission part of the gearbox is omitted in the middle, which has many advantages such as simple structure and easy maintenance. At present, direct-drive wind turbines use multi-pole synchronous motors, and the output of the motor stator windings is directly connected to the converter, and the converter converts the output voltage or current of the motor into a voltage and Frequency, but mainly due to the following reasons, the fan is prone to vibration: [0003] (1) The permanent magnet generator has more poles and a larger diameter. Compared ...

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): H02P9/00
Inventor 唐浩
Owner XINJIANG GOLDWIND SCI & TECH
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap