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Electromagnetic analysis of circuit breaker tripping unit
Mlynář, Zdeněk ; Augusta, Zbyněk (referee) ; Valenta, Jiří (advisor)
Using circuit breakers as devices for protecting the circuit, equipment, property, and not least the people is an important part of the generation, transmission and distribution of electricity. This puts high demands on the design of complex devices such as circuit breakers. To ensure proper function is one of many parts and that is the trip unit. Trip unit is used to evaluate the current flowing through the breaker and respond to undesirable overcurrent. For these reasons, this work deals with electromagnetic analysis - specifically thermal magnetic trip unit. The focus will be on improving the actual situation and finding more suitable design solutions.
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Network End Node for Spacial Monitoring of Atmosphere Parameters
Mlynář, Zdeněk ; Smetana, Lukáš (referee) ; Novák, Marek (advisor)
LoRaWAN end node is often a device composed of a sensor, or actor. In this case it is sensor monitoring atmosphere parameters. This can be used to investigate atmospheric impact on Free Space Optics. This work is firstly focused on physical layer LoRa, then on LoRaWAN communication protocol. LoRaWAN device classes are also described and examples of measurable parameters can be found at the end of the theoretical part as well. The practical part describes all components, which were chosen when designing this device, and lastly it comprises the schematic design. The result is printed circuit board design.
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Tests of motor operarators for low voltage circuit-breakers
Mlynář, Zdeněk ; Polák, Jiří (referee) ; Valenta, Jiří (advisor)
Nowadays increasing demands for energy, safe use and automation in modern systems. The last two mentioned areas can now be relatively easily done using low voltage circuit breakers, along with accessories. The main element is a motor operator of circuit breaker that can operate fully automatically. But that could be the motor operator together with a circuit breaker is sold, it is necessary to fulfill a number of requirements. This work deals with their summarization, partitioning and sequential treatment of individual tests that are necessary for motor operator or required by customers.
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Network End Node for Spacial Monitoring of Atmosphere Parameters
Mlynář, Zdeněk ; Smetana, Lukáš (referee) ; Novák, Marek (advisor)
LoRaWAN end node is often a device composed of a sensor, or actor. In this case it is sensor monitoring atmosphere parameters. This can be used to investigate atmospheric impact on Free Space Optics. This work is firstly focused on physical layer LoRa, then on LoRaWAN communication protocol. LoRaWAN device classes are also described and examples of measurable parameters can be found at the end of the theoretical part as well. The practical part describes all components, which were chosen when designing this device, and lastly it comprises the schematic design. The result is printed circuit board design.
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Electromagnetic analysis of circuit breaker tripping unit
Mlynář, Zdeněk ; Augusta, Zbyněk (referee) ; Valenta, Jiří (advisor)
Using circuit breakers as devices for protecting the circuit, equipment, property, and not least the people is an important part of the generation, transmission and distribution of electricity. This puts high demands on the design of complex devices such as circuit breakers. To ensure proper function is one of many parts and that is the trip unit. Trip unit is used to evaluate the current flowing through the breaker and respond to undesirable overcurrent. For these reasons, this work deals with electromagnetic analysis - specifically thermal magnetic trip unit. The focus will be on improving the actual situation and finding more suitable design solutions.
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|
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Tests of motor operarators for low voltage circuit-breakers
Mlynář, Zdeněk ; Polák, Jiří (referee) ; Valenta, Jiří (advisor)
Nowadays increasing demands for energy, safe use and automation in modern systems. The last two mentioned areas can now be relatively easily done using low voltage circuit breakers, along with accessories. The main element is a motor operator of circuit breaker that can operate fully automatically. But that could be the motor operator together with a circuit breaker is sold, it is necessary to fulfill a number of requirements. This work deals with their summarization, partitioning and sequential treatment of individual tests that are necessary for motor operator or required by customers.
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