The problem, which is solved by the presented innovation, is the construction solution and the manufacturing process of a Multipole magnetizing device used for the magnetization of the high coercive permanent magnets (such as ferrites and rare earths SmCo or NdFeB). These magnets need very high magnetic field strength, concentrated in specific and narrow areas, to achieve the point of magnetic material saturation. This guarantees the accuracy of the geometric shape of the magnetic poles, the stability of the magnetization process and a minimum scattering of the amplitude of the magnetic field between poles. A magnetization device must be able to withstand high forces of the magnetic field, which is generated as a result of the current pulses at magnetization. In this process heat is also released, causing heating of the whole system during the magnetization. Therefore, the solution also has an integrated cooling system. With the mentioned patent all described problems are solved successfully, so that the procedure is useful for magnetization of permanent magnets in large series production. Currently, this magnetization procedure is used in the production of the stepping motors for magnetization of the multi pole rotors in the company Iskra MEHANIZMI, Kropa. With that they were able to achieve a much better characteristics of the engines compared to the global competition stepping engines producers, which contributes to the expansion of their markets.
F.32 International patent
COBISS.SI-ID: 19721494The Company Hidria Rotomatika d.o.o. is a world known producer of induction motors used in the field of semi-hermetic compressors drives. In the year 2015, the 37 kW (50 Hp) four pole hybrid line-start permanent magnet motor with interior permanent magnets buried below the squirrel cage for semi-hermetic compressor drives has been designed and tested. By changing the rotor lamella cross-section (changing the shape and the area of the rotor slot, appropriate position and appropriate selection of the permanent magnet material) a 5 % increase of the efficiency in the vicinity of nominal working point has been achieved in comparison to the existent induction motor with the same physical dimensions. Results of the proposed research can have a significant influence on decreasing of greenhouse emissions. With the introduction of the energy high-efficient products to the potential industrial partners, their competitiveness and profitability in the global market can be improved. The direct impact of this project can be reflected in the reduction of energy usage and increased production and export of energy high-efficient products.
F.06 Development of a new product
The aim of the project was the development of the more competitive circuit breakers with residual current protection. In the scope of the project the researches about possibility for the usage of composite magnetic materials made of micro, nano and nano structured magnetic parts at production of electromagnetic devices are done. The use of these materials will simplify the production, it will make the production cheaper, the characteristics of the products will be better, waste material from the production will be reduced or no waste material will be produced, the energy used for the production will be reduced, etc. The proposer of the project was the company ETI Elektroelement d.d. Izlake. The company Iskra Mehanizmi d.d., Lipnica was the partner in the project and the performers of the researches on the project products were IMT Ljubljana and UM FEE&CS Maribor. Project is financed by European fund for regional development and Public agency for technological development (TIA). Project was finished in the year 2011. Results of the project are: new realisation of the trip relay developed to prototype phase, registration of three patents on Office for intellectual property of the Republic of Slovenia [COBISS ID 15234582], [COBISS ID 14850582] and [COBISS ID 15235094] and registration of the international patent at European patent office.
F.08 Development and manufacture of a prototype
COBISS.SI-ID: 1523458214850582The program FIELD_GS_transient is designed to calculate and simulate transient conditions in vicinity of earthing systems. It is possible to make complete analysis of the electromagnetic field in the ground where grounding mesh is located, as well as above the surface of the earth. Using the appropriate upgrade this allows us the evaluation of the impact of the electromagnetic fields on the environment in accordance with the Regulation on electromagnetic radiation in the natural and living environment at very rapid electric discharges in the ground. Ionization of the earth may also be considered in the calculation with the help of the dynamic model of ionization, which represents a more realistic capture of this phenomenon according to the classical model of ionization. The program enables the analysis of an arbitrary mesh, circular or polygonal grounding system in combination with vertical and horizontal rods. Multilayer model of the earth is used, which is generated by using the genetic algorithm and the measured data of the soil resistivity with Wenner’s method. In addition, it is possible to take into account the local inhomogeneities in the earth. The program is fully interactive and allows 3D visualization of all field quantities.
F.23 Development of new system-wide, normative and programme solutions, and methods
COBISS.SI-ID: 17682966Active international activity of the programme group members can be seen as memberships in the boards of international scientific conferences: - ISEF Symposium on Electromagnetic Fields in Mechatronics, Electrical & Electronic Engineering - ELECTROMOTION Symposium on Advanced Electro Mechanical Motion System, - EHE Conference on Electromagnetic Fields, Healt and Environment, - EMF Symposium on Electric and Magnetic Fields - SAEM Symposium on Applied Electromagnetics, - ENRE Conference of Energy & Responsibility, - PES Conference on Applied Electromagnetics - ENERGYCON – IEEE International Energy Conference - IEEE International Energy Conference, - SDEWES Conference on Sustainable Development of Energy, Water & Environment Systems - Euro-mediterranean Hydrogen Technologies Conference Transformer Research and Asset Management - INTERKLIMA International Conference Interklima - ICCE International Conference & Exhibition on Clean Energy - CEST Central European Symposium on Thermophysics - CEEC Central Eastern European Conference on Thermal Analysis and Calorimetry - ASEE International Conference on Advances in Energy Systems and Environmental Engineering
D.03 Membership in foreign/international boards/committees
COBISS.SI-ID: 6491212