Barcelona (20 hours - Programa de doctorat enenginyeria electronica UPC-UIB, Cursos i seminaris de formacio doctoral - CURS 2011-2012), 18-27 June, 2012. Barcelona, 2012. The pulse width modulation techniques for single and three-phase inverters were addressed in tutorial on UPC that was performed as a doctoral course. The lectures were based on the analytical approach and the switching matrix theory was used for describing the modulation principles appropriate for grid connected converters with power factor correction.
B.05 Guest lecturer at an institute/university
COBISS.SI-ID: 16117014Dr. Andreja Rojko held at Delft University of Technology, Netherlands, Electrical Sustainable Energy Department, section Electrical Power Processing four hours of lectures in course ET4365SET- Electrical Power Engineering. The course was held for students for students of 'Master of Science Sustainable Energy Technology' program. Further she has developed tutorial »Simulation of electric vehicle«, which is a part of large semester project Electric Mobility 2020 (EE2831 Project elektrisch vervoer 2020), which runs each year for students of 2nd year of the BSc program electrical engineering.
B.05 Guest lecturer at an institute/university
COBISS.SI-ID: 16610326Electricity consumption has recently increased enormously. Conversion system used in alternative sources of energy which include photo-voltaic systems, and systems with fuel cells, which may be supported by battery systems have been introduced in electrical-industry. The requirements for the operation of such systems are different in the so-called "an island" mode of operation versus grid connected systems. In island operation mode the load dictating current from the solar panel and therefore cannot reach the MPPT (Maximum Power Point tracking - MPPT). It was presented the current state of the art. The following review describes also the conversion systems for fuel cells. Conversion systems with fuel cells have similar output level as photo-voltaic but for "conditioning" DC bus an additional battery needs to be used. In the review is also shown how the electro-chemical properties of fuel cells affect the conversion system that enables long lifetime of it.
F.04 Increase of the technological level
COBISS.SI-ID: 70435329In the process of continuous arc welding, a thyristor current source may be used for improved pulsed welding realization. The paper describes the procedure for MIG/MAG welding with simulation results of thyristor pulsed welding process, and by using frequency analysis the impact of the described power source back into the grid is evaluated.
F.18 Transfer of new know-how to direct users (seminars, fora, conferences)
COBISS.SI-ID: 12321563The design of control concepts and algorithms for complex processes that are characterized more by the occurrence of discrete events than by differential equations representing the laws of physics is described. Such design is intended for process description in a symbolic, rather than numeric form. The goal is to combine concepts from both computer science and control, in order to develop a meaningful theory for controlling power electronics, process controllers, embedded systems and motion drive systems. Such design improves the firmware quality in a short development time. A designer would have only to specify the actions, events and transitions in terms of simple functions and tables. Generally, such design is highly structured and efficient, programming tasks are readily comprehended and fault diagnostics are easily included into the program structure. An application to the automatic sliding door illustrates the feasibility of this approach. The modular finite-state machine, event–condition–action system, motion generation, motion control with load estimation and an example of a digital signal processor system is presented. The limitations and attributes of each technique are discussed, and a state table format is presented with the capability of representing parallel asynchronous sequential processes. The results were obtained from work with young researcher from industry and will be implemented in their work.
F.06 Development of a new product
COBISS.SI-ID: 16519958