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Switch mode supplies
Hladík, Jan ; Martiš, Jan (referee) ; Patočka, Miroslav (advisor)
This thesis deals with the design of switched power supply for laboratory lessons. Forward converter was chosen as the topology of this power supply. Output voltage is adjustable from 0 V to 32 V. Power supply is capable of output current up to 10 A and output has adjustable current limiting. Following parts were designed: LC filter, pulse transformer, bridge rectifier with capacitor, power MOS-FETs driver, closed loop control with its auxiliary power supply. Cascade closed loop control is used for controlling of designed power supply. Control is analogue, operation amplifiers were used for its construction. PCB was designed for the whole power supply. Power supply was sucessfully assembled and tested.
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Converter for DC motor with sensorless speed control
Hanzl, Ondřej ; Martiš, Jan (referee) ; Tománek, Radek (advisor)
The scope of work is the design of a converter with sensorless speed control for a DC motor with permanent magnets with a power of 500 W at a voltage of 48 V. The whole device consists of two parts, a single-acting pass converter, which serves as a power supply with parameters 0 ÷ 60 V/0 ÷ 20 A for laboratory purposes, and on the hand as a power supply for a four-quadrant pulse converter for the speed control itself with user settings, electronic reversal of the direction of rotation and motor braking. The control of both inverters is provided by control circuits implemented digitally. All components will then be designed for measuring printed circuits boards of strandardized dimensions as plug-in modules to be built into instrument cabinet for easy disassembly and access in the case of controls.
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Converter for DC Welding
Siuda, Petr ; Vorel, Pavel (referee) ; Patočka, Miroslav (advisor)
This master´s thesis with the peripheral and structural design of power converter that will be used for DC welding. The drive itself is based on the principle of two single-acting permeable converters operating in counter strokes to a mutual load. The inverter operates at a frequency of 60kHz, and its output current can be controlled from 0 - 100A. Welder is equipped with a variable constant current or power adjustment. The device is powered from a single-phase 230V.
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Converter for DC motor with sensorless speed control
Hanzl, Ondřej ; Martiš, Jan (referee) ; Tománek, Radek (advisor)
The scope of the work is the design and implementation of a test sample of a converter with sensorless speed control for a DC motor with permanent magnets. The whole device consists of two main parts, namely a two-switch forvard converter, which serves both as a power source with parameters 0 ÷ 60V/0 ÷ 20A for laboratory purposes, and as a power supply for a four-quadrant pulse converter for the speed control of the electric motor. The control of both converters is ensured by digital control circuits. All components are placed on printed circuit boards of standardized dimensions as plug-in modules designed to be built into the instrument cabinet for easy disassembly and accessibility in case of checking measurements.
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Converter for DC motor with sensorless speed control
Hanzl, Ondřej ; Martiš, Jan (referee) ; Tománek, Radek (advisor)
The scope of work is the design of a converter with sensorless speed control for a DC motor with permanent magnets with a power of 500 W at a voltage of 48 V. The whole device consists of two parts, a single-acting pass converter, which serves as a power supply with parameters 0 ÷ 60 V/0 ÷ 20 A for laboratory purposes, and on the hand as a power supply for a four-quadrant pulse converter for the speed control itself with user settings, electronic reversal of the direction of rotation and motor braking. The control of both inverters is provided by control circuits implemented digitally. All components will then be designed for measuring printed circuits boards of strandardized dimensions as plug-in modules to be built into instrument cabinet for easy disassembly and access in the case of controls.
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|
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Switch mode supplies
Hladík, Jan ; Martiš, Jan (referee) ; Patočka, Miroslav (advisor)
This thesis deals with the design of switched power supply for laboratory lessons. Forward converter was chosen as the topology of this power supply. Output voltage is adjustable from 0 V to 32 V. Power supply is capable of output current up to 10 A and output has adjustable current limiting. Following parts were designed: LC filter, pulse transformer, bridge rectifier with capacitor, power MOS-FETs driver, closed loop control with its auxiliary power supply. Cascade closed loop control is used for controlling of designed power supply. Control is analogue, operation amplifiers were used for its construction. PCB was designed for the whole power supply. Power supply was sucessfully assembled and tested.
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Converter for DC Welding
Siuda, Petr ; Vorel, Pavel (referee) ; Patočka, Miroslav (advisor)
This master´s thesis with the peripheral and structural design of power converter that will be used for DC welding. The drive itself is based on the principle of two single-acting permeable converters operating in counter strokes to a mutual load. The inverter operates at a frequency of 60kHz, and its output current can be controlled from 0 - 100A. Welder is equipped with a variable constant current or power adjustment. The device is powered from a single-phase 230V.
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