The subject of this diploma thesis is to perform an electromagnetic design of a synchronous generator of given parameters, determine the temperatute rise of stator and pole windings using equivalent thermal circuits and draw longitudinal and cross section of the machine. The aim of...

The present diploma thesis deals with the influence of voltage on the properties of synchronous generator. In this thesis, I compare two machines with the same performance 5MVA but different voltages. In conclusion, there is an evaluation and recommendations on how to proceed when&...

The diploma theses presents the principles of the four-quadrant three-phase current source rectifier. It is presented the most used methods for control of this rectifier. After there is the simulation in program Matlab and his enviroment Simulink, where is presented created control diag...

This master thesis focuses on the flow modeling of cooling air in the air-gap induction motor, depending on the rotor speed. Following is the thermal analysis of the rotor cage depending on the rotor speed. In the introduction of this thesis are discussed the basic proper...

The diploma thesis deals with predictive current control of voltage source inverter (VSI). In the introduction are described three phase voltage source inverter and basic mathematical model of the inverter and it is shown how to calculate switching losses of VSI. Next part is ...

This Master's thesis deals with project of highspeed asynchronous machine in non-explosive cover, circular diagram, torque and current characteristics. Furthermore, it deals with checking effort of rotor's gear section by using FEM (Finite Element Method). And also it compares a classical...

Electromagnetic design of permanent magnet synchronous machine was made; used magnetic material is rare earth NdFeB magnet. The thesis contains four designs for different arrangements of permanent magnets, which are located in rotor. Influence of these arrangements on magnetic field inside o...

The presented diploma thesis deals with the design of an air-cooled synchronous generator with cylindrical rotor - turbo-alternator. The first chapter describes the electromagnetic design of a synchronous machine based on the specified parameters. The second chapter is focused on approximate ...

This thesis consists in design of traction squirrel cage induction motor for trolleybus and creation of power series. The motor is compared with successfully designed and tested motor. The power series is based on this motor. Its elements are created by the winding connection ...

The master thesis verifies correctness of the results by ventilation and thermal calculations with the help of numerical methods CFD and FEM in the computing environment ANSYS. The first three chapter acquaints with the creation, transfer and remove of the heat losses, due to ...

This thesis is concerned with design, simulation and implementation of electronically commutated BLDC motor control algorithms with 6-phase commutation strategy. Part of this thesis is the analysis of BLDC motor, its control options, switching techniques and methods of the rotor position detectio...

Diploma thesis is focused on creating model of magnetic and thermal field DC motor. This DC motor with permanent magnets is used for fuel pump. Width of stator causes oversaturation of magnetic circuit. Next was derived mathematical model of magnetic and thermal field. In prac...

The master theses is focused on describing the inductive wireless charging. The objective is to outline the possible types, using and a basic knowledge on which the system works. Part of the work is custom design inductive wireless charging and measure its properties.

The aim of this thesis is to introduce readers to basic topologies of multilevel converters and simulation of two selected converters. The described topologies are cascade multilevel converters , diode clamped multilevel converters, flying capacitor multilevel converter and at last a modular...

The objective of this diploma thesis is to introduce readers to an interesting application of electromagnetism. This work summarises theory and application of coilgun which works on a principal of interaction between electrical current passing through the coil and ferromagnetic projectile. I...

This diploma thesis deals with issue of the design of the management system of energy flow battery for a specific application using a microcontroller STM32F4 Discovery. By setting data communication with other processors of the device with a CAN bus and measuring individual members...

The submitted thesis deals with the method of protection of Li-ion battery. The author has also described all important parameters related to its charging and operation. The first part describes the characteristics of Li-ion batteries and compares them not only with the characteristics&...

This diploma thesis is focused on explanations and definitions of terms in the field of water electrolysis. It takes a review of available production methods of hydrogen and HHO gas and explains meaning of Dry and Wet cells. The next part is dedicated to design of un...

The master thesis presents calculation of equivalent circuit parameters of the specified asynchronous traction motor. The no-load curve and efficiency of the machine are calculated. This calculation is verified by numerical analysis using finite element method and appropriate software. The object...

The master thesis is focused on control of power semiconductor three-level neutral point clamped converter. Thesis contains theoretical introduction, simulation model of this converter, control algorithm based on vector PWM and its modifications. Goal of these modifications is to improve frequenc...