Slovenian patent application comprises a description of the device and method for the determination of the microstructural properties of metallic materials, such as, for example, materials for the production of the iron cores of electromagnetic devices.
F.14 Improvements to existing production methods and tools or processes
COBISS.SI-ID: 1144746Lecture for the Bachelor degree study at the Czech Technical University in Prague, Faculty of electrical engineering in spring semester of academic year 2014/2015. The subject has 5 ECTS (30 hours lectures, 15 hours practices) and written and oral exam.. 2015. [COBISS.SI-ID 18496278]
B.05 Guest lecturer at an institute/university
COBISS.SI-ID: 18496278The tester and the procedure of testing to determine the quality of magnetic circuits is based on pulse excitation and hysteresis control of primary current. The magnetic characteristic of the tested transformer iron core is evaluated on the basis of measured frequency of excitation and measured reactive power. The corresponding working point and tester operating range is chosen by changing the number of primary winding turns and by selecting switching current and voltage. All tests are performed by the standard existing inverter, so that there is no need for an expensive additional testing equipment. Transformer core testing is quick, effective and universal. The tests of already built-in cores are also possible. The entire magnetic circuit is evaluated by the described procedure taking into account influence of many factors, such as the type of material, lamination tickness, damages, treatment of the air gap, irregularities during construction, etc.
F.14 Improvements to existing production methods and tools or processes
COBISS.SI-ID: 18795286This patent application introduces certain modification of advanced hysteresis control (AHC) of resistance spot welding (RSW) system. The measurements of magnetic flux density itself is based on patent application described in the literature, which includes two measuring bridges to cower the possible unsymmetrical distribution of magnetic field inside the transformer iron core. The modified AHC is simple to apply in the practical application.
F.10 Improvements to an existing technological process or technology
COBISS.SI-ID: 19217942Monitoring system for welding transformer is capable of taking measurements and recording data of electrical values of welding transformer. After all it is possible to transfer data to the PC, convert them into DEC code and evaluate. On the base of obtained data it is possible to conclude about working of welding transformer during lifetime and diagnose possible failure.
F.06 Development of a new product
COBISS.SI-ID: 18535446