|
|
Measuring RLC on the components of electrical circuits
Pokorný, Marek ; Vítek, Ondřej (referee) ; Veselka, František (advisor)
Aim those work is inform numerator about possibilities and features gauging apparatus 7600 Precision LCR undergrounds and further then about metering paramers R,L,C on components electric standing ,especially then on sliding contacts,with which this work acquaint and how are their characteristics important for correct functionality electrical machine whereof are site rated power.Warp work largely start from manual to apparatus 7600 Precision LCR undergrounds and further then out publication sliding contact in electrical machine - doc. Veselka, doc. Chmelik.
|
|
|
DC Motors Analysis and Innovation
Šimko, František ; Kuchyňková, Hana (referee) ; Hájek, Vítězslav (advisor)
The thesis aims to explain the design a prototype of an innovated small engine. It is divided into three main parts. The first part is focused on the analysis of low power DC small engines available on the market. The second part consists of measuring, construction and loss analysis of a DC small engine with permanent magnets. The last part deals with the possible innovations of a small engine with permanent magnets and subsequent implementation of some of them. The innovations are supported by calculations and simulations.
|
|
| |
|
|
Properties of whiper motor
Kůta, Aleš ; Skalka, Miroslav (referee) ; Janda, Marcel (advisor)
Nowadays a need of numerical computations of different tasks in the area of electrical engeneering is still rising. Common denominator of great demands given on a constructor and ecomonization of manifacturing is a requirement of efficiency. It´s necessary to use a characterictics of construction, own fundamentals and unique attributes of product. Application of Finite Element Method is possible solution which accombines abilities and knowledge of user in consecutive to complexity of computatio. This enables a use of the most optimal solution. This thesis describes a principals of Direct-Current motor and its´ special design: Direct Inductor motor with extrinsic excitation (permanent magnests). It presents a operation of wiper motor in consecutive to wiping systém and fulfillment of engeneering standards. It also describes a principles of Finite Element Method in context to basics of simulation program FEMM. Main attention is given to creation of concrete model and to simulation of gauged exercise with wiper motor. Also there is a second simulation of motor, focused to different type of stator excitation. Findings of thesis is a comparation of theese exercises. Consecution of modeling in software environment is described. It compiles gauged excercise and interprets them.
|
|
|
DC motors for general purposes.
Randa, Daniel ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
This work deals with innovation DC permanent magnet motor for low power. The work is divided into three tasks. The first part is to survey serially produced DC motors. The second part is to choose one particular DC motor drawn from the survey and carry out its analysis and detailed description. The last part is to design innovations to selected DC motor.
|
|
|
Physical Quantities Measurement of the Rotating Parts
Štorek, Pavel ; Malenovský, Eduard (referee) ; Pozdník, Jaroslav (referee) ; Veselka, František (advisor)
This work is dedicated to small distance contact-less measurement. Especially the surface detection of the commutator or collector of the electrical machines was described. The probes utilising the induction principle of the distance measurement have been developed. The part of the work described the history of the induction distances sensing in FEEC BUT and the using of the induction principle in the industry small distances sensing nowadays. The paper concretely determines the possibilities of the small distances measurement using mentioned probes. The sensitivity for different materials was investigated and the error of the measurement for different measuring object was investigated, too. The effects, that could affected the measurement error, were described in the work. The contribution of the each effect for the total measuring error was specified. Next part is including the description of the measuring workstation and of the hardware and software. At the end the verification of the measuring principle and measuring workstation is presented. The verification has been made on three different commutator types. The verification results are in the conclusion.
|
|
|
Utilization of SolidWorks at power electrical engineering
Fazekas, Tamás ; Mikulčík, Aleš (referee) ; Veselka, František (advisor)
The purpose of the bachelor thesis was to became familiar with parametric CAD systems and create a simple model in high power electronics branch. The first part of the project summarizes the most known CAD systems. The second part deals with a specifics software:SolidWorks 2008. Finally, a simple model has been created in Solidworks 2008 from the power electronics branch. It is a model of an electric machine which is suitable for the research of the sliding contact.
|
|
| |
|
|
Influence of dust particles on sliding contact
Píšala, Jan ; Janda, Marcel (referee) ; Veselka, František (advisor)
Master's thesis "effect of dust particles on sliding electrical contact" summarizes the sliding contact theory and praxe in rotating electrical machines. The principle of brush machines is described and the working environments are defined. The individual components of the sliding contact and reasons of their degradation are described in detail. Emphasis is placed on the influence of foreign particles, which can be assessed in practice by the method of dust particles. Furthermore, these theoretical knowledge was used in the practical assessment of the technical condition of various machines, as well as the called method. One set of brushes for the traction motor of the locomotive T47.0 was also experimentally innovated.
|
|
|
The design of DC motors for traction of a motorboat
Hudák, Ondřej ; Lapčík, Josef (referee) ; Veselka, František (advisor)
The bachelor thesis deals with the problems of design of Permanent Magnet DC Motor. The theoretical part explains the problems of sliding contact and solves the innovation in this area with specialization on the sliding contact of DC motor. The other part contains practical verification of theoretical assumptions on the selected machine of normal production.
|
guest ::
