Original title: Zazen pro diagnostiku asynchronnch motor
Translated title: Device for diagnostic of induction machine
Authors: Buln, Tom ; Janda, Marcel (referee) ; Huzlk, Rostislav (advisor)
Document type: Master’s theses
Year: 2014
Language: cze
Publisher: Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií
Abstract: [cze] [eng]
Clem diplomov prce je seznmit se s poruchami asynchronnch motor. Vzhledem k tomu, e tento typ motor pat k nejpouvanjm a nejrozenjm strojm, je vhodn monitorovat vznikajc poruchu, aby se pedelo ppadnm vtm kodm. Provdt monitorovn motoru lze rznmi typy metod, kter jsou rzn technicky a cenov nron na realizaci. V tto prci je pouita metoda men pomoc statorovch proud, protoe proudy bvaj ji monitorovan a sta vytvoit zazen pro jejich podrobnj analzu. Cel men je realizovno pomoc produkt od firmy National Instruments. Programov st men je vytvoena v grafickm prosted v LabVIEW. Analza je provdna vypotnm rychl Fourierovy transformace z asovho signlu. Vsledkem je frekvenn spektrum, kter obsahuje frekvenn piky z nich nkter pedstavuj poruchu. Testovac data jsou sbrna pomoc DAQ zazen a s jejich pomoc je pot vytvoena metodika vyhodnocovn pro online analzu a nsledn je implementovna do platformy CompactRIO. The aim of the thesis is to study the problems of induction motors, which belong among the most widespread and used machines. Due to their expansion, it is advisable to start the fault monitoring to prevent any more damage and losses. It can be used for condition monitoring different types of methods, which are variety technically and costly demanding to implement. It is used the method of measurement using stator currents in this thesis, because these currents are already monitored and it is easy to create devices for a more detailed analysis. The whole monitoring is carried out using products from National Instruments. The program of monitoring is created in graphical setting of LabVIEW. The analysis is conducted by calculating the Fast Fourier transform of the time signal. The result is the frequency spectrum, which contains frequency peaks and some of these peaks represent failure. The test data are collected with a DAQ device and then the same data are used for creating a methodology for evaluating online analysis and it is subsequently implemented into CompactRIO.
Keywords: CompactRIO; current sensor; eccentricity; faults; FFT; FPGA; frequency current spectrum.; interrupted rotor rods; LabVIEW; LAH 25-NP; National Instruments; stator currents; CompactRIO; excentricita; FFT; FPGA; frekvenn proudov spektrum.; LabVIEW; LAH 25-NP; National Instruments; peruen rotorov tye; poruchy; proudov idlo; statorov proudy

Institution: Brno University of Technology (web)
Document availability information: Fulltext is available in the Brno University of Technology Digital Library.
Original record: http://hdl.handle.net/11012/31897

Permalink: http://www.nusl.cz/ntk/nusl-219995


The record appears in these collections:
Universities and colleges > Public universities > Brno University of Technology
Academic theses (ETDs) > Master’s theses