|
|
DC switching power supply
Látal, Jiří ; Folprecht, Martin (referee) ; Lažek, Tomáš (advisor)
Bachelor’s thesis discusses the design of an adjustable DC/DC converter with an output voltage of 30 V and a current of 10 A. The first part described three basic DC/DC converter topologies and the scheme of power and control structure of the converter. As a suitable topology of power supply was selected a two-switched forward converter. The integrated circuit SG3525ADWR2G was chosen as the PWM modulator for the converter. The second part of the thesis described the design and testing of the switch mode power supply.
|
|
|
BJT and MOSFET transistor-based switches - educational laboratory equipment
Bartoň, Ondřej ; Langhammer, Lukáš (referee) ; Šotner, Roman (advisor)
This thesis deals with the design of new experimental laboratory equipment with bipolar and unipolar transistor switches. This work analyzes the components needed for circuit design, such as integrators, comparators, bipolar, and unipolar transistors. Designed system is going to include a functional rectangular signal generator that controls unipolar and bipolar transistor switches. These switches will be designed for current switching up to 1 A. The aim of the thesis is to verify the functionality of designed circuits using the simulation software PSpice.
|
|
| |
|
|
BLDC drive control
Havlíček, Jiří ; Buchta, Luděk (referee) ; Otava, Lukáš (advisor)
The bachelor thesis is focused on problems of sensor control of Brushless DC Electric motor (BLDC) using hall-effect sensors. The BLDC motor is connected to 3-Phase low-voltage board which was produced by Freescale Semiconductor, Inc. The board is adapted to control electrical motors by MC56F8006 signal microcontroller. The next part is devoted to implementation of interconnection of the machine with the Matlab/Simulink programme using the MF 624 multifunction I/O card. Cascaded control, current and speed loops are used for the final configuration. The former loop is realized in the signal microcontroller, the latter one in the Simulink programme.
|
|
|
Function generator
Húsek, Jan ; Mišurec, Jiří (referee) ; Káňa, Ladislav (advisor)
Bachelor`s thesis deals with design and realization of one possible solution of function generator with use of integrated circuit XR 2206. This function generator operates in frequency range 10Hz – 100kHz and it is designed to generate square, triangle and sine waveforms with variable duty and output amplitude to 10Vpp. Function generator contains inputs for amplitude and frequency modulation.
|
|
|
Step-up convertor with transformer
Poštolka, Martin ; Procházka, Petr (referee) ; Hejkrlík, Jan (advisor)
This work focuses on the proposal and realization of high-frequency switching source. It consists of a theoretical and a practical part. The theoretical part includes selection and summary of the parameters of converters which we use. It also includes schemes and visual display of the important continuance of magnitudes. We can also find there the enumeration of advantages and disadvantages of every single converter. Further, it is concerned with the selection of the converter which is most suitable for our work. The practical part consists of the calculation and the solution of the step-up converter with the transformer. The realization and appropriate choice of components follows. There is also described the power supply of the switching transistors and how to operate these device.
|
|
|
Voltage converter with microcontroller
Jedlinský, Lukáš ; Patočka, Miroslav (referee) ; Huták, Petr (advisor)
In these baccalaureate work is buckthorn power supply mobile computer from automobile nets. Main thought is using suspense raising equable changers with high working frequency. To regulation and operating sources will used microprocessor series AT Tiny. Will also be effected project programmatic equipment and his implementation to the integrated perimeter and project PCB and by herself realization hereof perimeter.
|
|
|
Laboratory module for educational purposes
Tuhý, Luboš ; Vašíček, Adam (referee) ; Procházka, Petr (advisor)
This thesis describes the design and implementation of the transistor inverter to the subject of power electronics first outcome of this thesis will transistorized inverter that will serve as a demonstration tool in laboratory practice course electrical power. The laboratory preparation, students will be able to virtually test your theory acquired knowledge of the issue. Part of the theoretical analysis will be proposed circuit simulation program through classes Spice.
|
|
|
Compact inverter for BLDC motor
Nevřivý, Tomáš ; Červinka, Dalibor (referee) ; Procházka, Petr (advisor)
The work describes the design and implementation of compact inverter for brushless DC motor, which have mechanical power 600 W and rated torque 1.6 Nm. Motor is designed for DC link voltage with value 300 V. The focus is placed on the cost and simplicity. On this basis, the inverter is designed for uses single purpose power and control circuit. The power part is solved using a circuit FSBB15CH60C. The circuit is placed on a separate board of power electronics. Cooling of the power circuit is performed by the surface structure of BLDC motor. Control of the inverter ensures circuits LB11696V and NE566. The both circuits are placed on separate board of control electronics. Circuit LB11696V contains a control algorithm, as well as protections, which are necessary for safe operation of the inverter. Power supply of electronics is performed using step-down converter from MYRRA company.
|
|
|
Power source for pulse magnetron sputtering
Schulz, Jakub ; Magát, Martin (referee) ; Šteffan, Pavel (advisor)
The presented thesis deals with the design and assembly of the generator for pulse magnetron sputtering. The designed device is capable of generating two square wave signals via its counter-working outputs. Both signals have independently adjustable frequency, pulse count and duty ratio. Both signals originate from two frequency syntheses controlled by microcontroller PIC16F877A. All the settings are entered by four buttons and are shown on an alphanumeric display with 16x4 characters. The duty ratio is adjusted using a special module.
|
guest ::
