Device for measuring torsional resonance frequency and method therefor
A resonant frequency, measuring device technology, applied in measuring devices, measuring resonant frequency, measuring ultrasonic/sonic/infrasonic waves, etc., can solve the measurement of resonant frequency that is not easy to reverse, the maintenance personnel are prone to dangerous incidents, major maintenance time and maintenance. Cost and other issues, to achieve the effect of shortening measurement time, improving cost and maintenance safety issues, and improving safety
Active Publication Date: 2012-09-05
IND TECH RES INST
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
As a result, maintenance personnel must personally go to the location of each wind turbine to perform measurement work. However, generally, the location of large wind turbines is quite high, or in order to obtain better wind power capture effect and avoid wind turbines. Noise causes pollution. Most of the wind turbines or wind harvesting devices are installed on remote mountains, seaside or even offshore islands. It is difficult to measure the torsional resonance frequency, so it will consume considerable maintenance time and cost.
In addition, wind turbines usually have a considerable height, making on-site maintenance personnel prone to dangerous incidents
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0052] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. The following examples further illustrate the concept of the present invention in detail, but should not be construed as limiting the scope of the present invention.
[0053] What needs to be explained here is that, in order to avoid obscuring the focus of the present invention, some known electrical connections (such as power supply or voltage signal, etc.), coupling methods and basic circuit elements (such as capacitors or diodes, etc.) Describe...
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
Login to View More Abstract
The invention relates to a device for measuring torsional resonance frequency and a method therefor, which are applied to large-scale generating equipment with a rotating shaft or motor traction equipment, such as a high-power grid-connected type wind turbine; the device mainly uses the existing motor side converter in the grid-connected type wind turbine for outputting direct-current pulse currents to a three-phase permanent magnet synchronous generator so as to supply a pulse twisting force to a rotor of the three-phase permanent magnet synchronous generator for excitation of the rotor; then the device captures a counter electromotive force generated by the three-phase permanent magnet synchronous generator under the action of excitation by a control circuit of the motor side converter and works out the torsional resonance frequency of an integral transmission chain according to the frequency spectrum wave form of the counter electrodynamics force.
Description
technical field [0001] The present invention relates to a device and method for measuring torsional resonance frequency (torsional resonance frequency) of a rotating part, more specifically, relates to a method for measuring the unrestrained ( Apparatus and method for torsional resonance frequency of a rotating member supported by a free-free transmission chain. Background technique [0002] In recent years, due to the lack of fuel and the emphasis on environmental protection, countries all over the world are actively investing in the development of wind power generation. The wind turbine used in wind power generation drives the blades to rotate through the wind to generate mechanical energy, which is then converted into electrical energy through the generator, and finally the electrical energy is fed to the load in an appropriate form through the power converter (such as street lamps) ), energy storage devices (such as batteries) or power transmission and distribution syst...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01H13/00
Inventor 桂人杰张永源
Owner IND TECH RES INST