Prenapetostna zaščita za motorizirane rolete

PREGELJ, ŽAN (author), Tuma, Tadej (mentor)

Pri udaru strele v objekt ali inštalacijo lahko pride do okvare električne inštalacije ali posamezne električne komponente. Da zaščitimo naprave pred okvaro, v tokokrog vključimo prenapetostno zaščito. Ta odvede tok, ki se ustvari ob udaru strele. S tem prenapetostna zaščita zniža padec (pre)napetosti na napravi, ki jo varuje. Na ta način, lahko zaščitimo elemente pred udarom strele (tudi motor za rolete). V diplomski nalogi bom predstavil osnove udara strele. Nato bom predstavil vrste prenapetostnih zaščit in njihovo uporabo. Posvetil se bom opisu delovanja in razvoju prenapetostne zaščite za motorizirane rolete. Predstavil bom simulacije (LTspice) in razvoj s katerim sem zasnoval delovanje celotnega vezja. Razvoj sem nadaljeval s pomočjo protoboard-a, na katerem sem realiziral posamezne dele vezja. Vezje sem vzbujal s pomočjo frekvenčnega regulatorja, meritve na posameznih delih vezja pa sem opravil z osciloskopom. Ko je vezje delovalo pravilno, sem ga priključil na realne parametre (230 VAC). Po opravljenih laboratorijskih testiranjih in simulacijah, sem odpravil še nekatere napake. Na ta način sem pridobil rezultate, ki ustrezajo zahtevanim certifikatom.

• Language: Slovenian
• Keywords: Prenapetostna zaščita, Plinski odvodnik, TFMOV
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2021
• PID: 20.500.12556/RUL-125079
• Publication date in RUL: 04.03.2021

Secondary language

• Language: English
• Title: Overvoltage Protection for Motorized Blinds

Abstract

When lightning strikes an object or installation, it can lead to failure on electrical installations or individual electrical components. To protect the devices from damage, we include an overvoltage protection in the circuit, which removes the current, that is induced by a lightning strike. By doing so, we can protect the elements from lightning strikes (including the motor for blinds). In my degree I will present the basics of lightning strike. Then I will present the types of surge protectors and their use. I will explain the functioning and development of overvoltage protection for motorized blinds. With the help of electronic simulations (LTspice) I have designed the functioning of the whole circuit. I have continued the development with the help of protoboard on individual parts of the circuit. I have designed the circuit with the help of a frequency regulator, and I have performed measurements on individual parts of the circuit with an oscilloscope. When the circuit was working properly, I have connected it to real parameters (230 VAC). After doing lab tests and simulations, I have fixed some mistakes that I did during the process of developing. This way, I obtained results that correspond to the required certificates.

• Keywords: Lighting strike protection, SPD, GDT, TFMOV