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Polnik B.,Institute of Mining Technology KOMAG | Budzynski Z.,Institute of Mining Technology KOMAG | Miedzinski B.,Institute of Innovative Technologies
Elektronika ir Elektrotechnika | Year: 2014

The paper discusses the advantages and disadvantages of existing mining locomotive propulsion systems used in the Polish underground mines. The method to design a new propulsion system with recuperation of energy is presented. Conclusions and recommendations for necessity of controlling the volume of recuperated energy closely correlated with amount of electrolytic gas emissions are given. Source


Miedzinski B.,Wroclaw University of Technology | Wisniewski G.,Wroclaw University of Technology | Grechanyuk N.I.,Scientific and Producing Company ELTECHMASH | Grodzinski A.,Polish Tele and Radio Research Institute | Kozlowski A.,Institute of Innovative Technologies
Przeglad Elektrotechniczny | Year: 2010

Paper presents and discusses investigated results of performance of selected low voltage vacuum interrupters in which the multicomponent multilayer condensed contact material based on Cu-W compositions was used. On the basis of the switching test results followed by respective inspections of the contacts surface and investigations of the microanalysis as well as material morphology the conclusions on possibility of application of such the material composition for LV vacuum interrupters in practice are formulated. Source


Habrych M.,Wroclaw University of Technology | Wisniewski G.,Wroclaw University of Technology | Miedzinski B.,Institute of Innovative Technologies | Wosik J.,Institute of Innovative Technologies | Kozlowski A.,Institute of Innovative Technologies
Proceedings - 2014 International Conference on Information Science, Electronics and Electrical Engineering, ISEEE 2014 | Year: 2014

The paper presents the investigated results of performance of power transformers when used for converters supply of DC drive of hosting machines. Particular attention was paid on the power loss due to deformed current and voltage waveforms. The active and reactive power losses were compared for the newly employed transformer to this working more that 16 years. On the basis of the measurements the conclusions and recommendations for use in practice are formulated. © 2014 IEEE. Source


Wosik J.,Institute of Innovative Technologies | Kozlowski A.,Institute of Innovative Technologies | Habrych M.,Wroclaw University of Technology | Kalus M.,Institute of Innovative Technologies | Miedzinski B.,Institute of Innovative Technologies
Elektronika ir Elektrotechnika | Year: 2016

The paper analyses and examines the efficiency of non-linear reactive power compensation when use the active power filter controlled by an algorithm based on the theory of CPC. The developed physical model of 3-phase active filter has been presented and results of its performance in the system so the linear load and nonlinear RL type are discussed. Particular attention was put on its operation in transient conditions. Based on both simulation and investigation results appropriate practical conclusions are formulated. Source


Wojtas P.,Institute of Innovative Technologies | Kozlowski A.,Institute of Innovative Technologies | Miedzinski B.,Institute of Innovative Technologies | Wosik J.,Institute of Innovative Technologies
Proceedings of the 5th International Conference on Reliability of Electrical Products and Electrical Contacts, ICREPEC 2014 | Year: 2014

Paper presents and discusses investigated results of performance of selected low voltage vacuum interrupters in which the multicomponent multilayer condensed contact material based on Cu-W compositions was employed. On the basis of the switching test results followed by respective inspections of the contacts surface and investigations of the microanalysis as well as material morphology the conclusions on possibility of application of such the material composition for LV vacuum interrupters in practice are formulated. Source

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