Projects / Programmes
Analysis and design of selective miniature circuit breaker
Code |
Science |
Field |
Subfield |
2.12.00 |
Engineering sciences and technologies |
Electric devices |
|
Code |
Science |
Field |
P200 |
Natural sciences and mathematics |
Electromagnetism, optics, acoustics |
T190 |
Technological sciences |
Electrical engineering |
Miniature circuit braker, selective, numerical simulation, electromagnetic tripping unit
Researchers (12)
no. |
Code |
Name and surname |
Research area |
Role |
Period |
No. of publicationsNo. of publications |
1. |
18751 |
PhD Edi Bulić |
Systems and cybernetics |
Researcher |
2006 - 2008 |
87 |
2. |
12781 |
MSc Miran Dolinšek |
Manufacturing technologies and systems |
Researcher |
2006 - 2008 |
27 |
3. |
06895 |
PhD Izidor Hafner |
Computer intensive methods and applications |
Researcher |
2006 - 2008 |
459 |
4. |
04335 |
Jožica Hrastelj |
Materials science and technology |
Researcher |
2006 - 2008 |
0 |
5. |
21055 |
Domen Janc |
Electric devices |
Researcher |
2006 - 2008 |
5 |
6. |
02115 |
PhD Borut Jurčič Zlobec |
Mathematics |
Researcher |
2006 - 2008 |
128 |
7. |
22337 |
Uroš Kovač |
Energy engineering |
Researcher |
2006 - 2008 |
0 |
8. |
10269 |
PhD Dejan Križaj |
Systems and cybernetics |
Head |
2006 - 2008 |
308 |
9. |
05075 |
PhD Drago Resnik |
Electronic components and technologies |
Researcher |
2006 - 2008 |
261 |
10. |
06282 |
PhD Anton Rafael Sinigoj |
Telecommunications |
Researcher |
2006 - 2008 |
127 |
11. |
13275 |
Matija Strehar |
Electric devices |
Researcher |
2006 - 2008 |
15 |
12. |
22338 |
Stane Vidmar |
Energy engineering |
Researcher |
2006 - 2008 |
0 |
Organisations (1)
Abstract
In the proposed project we will analyze and design a new type of miniature circuit braker that enables selective switching at overload of a protected circuitry. The most important advantage of a new design is selective principle of protection with parallel connection of electromagnetic tripping unit and a termomechanic one. This principle will significantly reduce the povver consumption of the breaker and enable breaking characteristics that are independent on the surrounding temperature. A thorough analysis will be performed using principles of numerical simulation of electromagnetic field in the tripping unit. The results will serve for design, development and optimization of a circuit braker.
Significance for science
We have developed a prototype of a completely new selective circuit breaker that will in the future replace the classical LV safety fusses in domestic as well as industrial environment. Comparing with the competition in the field we have succeeded to develop an apparatus that is temperature independent and has smaller electrical energy consumption.
In the frame of the project we have optimized the electromagnetic circuit trigger which is an essential part of the selective circuit breaker. We have developed a completely new concept of a magnetic core that now incorporates a short-circuit ring. With this ring we were able to reduce the unwanted vibration of the shock needle under current overloading since the force vibrates at the rate of 100 Hz. Using a cooper ring we were able to reduce the average force so that the anchors do not cause excessive vibrations even at low currents. This step was crucial in order to prevent contact welding.
The development and analysis of operation of the circuit breaker was assisted by computer tools for numerical simulations. Especially, we have concentrated on the analysis of operation of the electromagnetic trigger. The simulation results have been used in optimization of crucial design parameters.
Currently, we are introducing a completely new technology in fabrication of magnetic cores. Using a sintering process we will be able to reduce the relative complex process of assembling. The most important advantage of sintering is exact formation of an air gap since the process reduces the gap between separate parts of the magnetic core.
Significance for the country
We have used the results of the project also in the development of other devices used in the switching techniques since we gained a lot of knowledge in the operation of electromagnetic devices and use of materials in electromagnetics. The gained knowledge will enable us to develop similar electromagnetic circuit breakers for interested industrial partners, especially those abroad.
Besides, the cooperation betweeen the industry and university has resulted in sinergetic effects where we took advantage of theoretical as well as practical knowledge in exact understading of operation and design of electromagnetic curcuit breakers. Besides, we were able to transfer concrete industrial problems and solution strategies into academic environment. This cooperation presents motivation also for the students since they become aware of the importance of theoretical knowlede and its use in industrial applications.
Most important scientific results
Final report,
complete report on dLib.si
Most important socioeconomically and culturally relevant results
Final report,
complete report on dLib.si