Philosophy of Interactive e-Learning for Power Electronics and Electrical Drives: a Way from Ideas to Realization

Pavol Bauer,Viliam Fedak 전력전자학회 2010 JOURNAL OF POWER ELECTRONICS Vol.10 No.6

The paper reports about methodology at design of interactive e-learning modules that are suitable both for teaching and learning. They cover special topics of electrical engineering, starting from the fundamentals, through electrical machines, power electronics to the fields of controlled electromechanical energy conversion, like electrical drives, complex drive systems, application of drives, mechatronic systems, telemanipulation, and robotics. In the paper, the emphasis is devoted in detail to philosophy and realization of the modules from fields of Power Electronics and Electrical Drives. On several examples there are explained main principles and specialties at their development.

Philosophy of Interactive e-Learning for Power Electronics and Electrical Drives: a Way from Ideas to Realization

Bauer, Pavol,Fedak, Viliam The Korean Institute of Power Electronics 2010 JOURNAL OF POWER ELECTRONICS Vol.10 No.6

The paper reports about methodology at design of interactive e-learning modules that are suitable both for teaching and learning. They cover special topics of electrical engineering, starting from the fundamentals, through electrical machines, power electronics to the fields of controlled electromechanical energy conversion, like electrical drives, complex drive systems, application of drives, mechatronic systems, telemanipulation, and robotics. In the paper, the emphasis is devoted in detail to philosophy and realization of the modules from fields of Power Electronics and Electrical Drives. On several examples there are explained main principles and specialties at their development.

Distance Education in Soft-Switching Inverters

Dan Lascu,Pavol Bauer,Mircea B?b?it¸?,Mihaela Lascu,Viorel Popescu,Adrian Popovici,Dan Negoi?escu 전력전자학회 2010 JOURNAL OF POWER ELECTRONICS Vol.10 No.6

The paper describes aspects regarding an E-learning approach of resonant ac inverters. The learning process is based on “Learning by Doing” paradigm supported by several learning tools: electronic course materials, interactive simulation, laboratory plants and real experiments accessed by Web Publishing Tools under LabVIEW. Built on LabVIEW and accompanied by a robust, flexible and versatile hardware, the experiment allows a comprehensive study by remote controlling and performing real measurements on the inverters. The study is offered in a gradual manner, according to the Leonardo da Vinci project EDIPE (E-learning Distance Interactive Practical Education) philosophy: theoretical aspects followed by simulations, while in the end the real experiments are investigated. Studying and experimenting access is opened for 24 hours a day, 7 days a week under the Moodle booking system.

Distance Education in Soft-Switching Inverters

Lascu, Dan,Bauer, Pavol,Babaita, Mircea,Lascu, Mihaela,Popescu, Viorel,Popovici, Adrian,Negoitescu, Dan The Korean Institute of Power Electronics 2010 JOURNAL OF POWER ELECTRONICS Vol.10 No.6

The paper describes aspects regarding an E-learning approach of resonant ac inverters. The learning process is based on "Learning by Doing" paradigm supported by several learning tools: electronic course materials, interactive simulation, laboratory plants and real experiments accessed by Web Publishing Tools under LabVIEW. Built on LabVIEW and accompanied by a robust, flexible and versatile hardware, the experiment allows a comprehensive study by remote controlling and performing real measurements on the inverters. The study is offered in a gradual manner, according to the Leonardo da Vinci project EDIPE ($\b{E}$-learning $\b{D}$istance $\b{I}$nteractive $\b{P}$ractical $\b{E}$ducation) philosophy: theoretical aspects followed by simulations, while in the end the real experiments are investigated. Studying and experimenting access is opened for 24 hours a day, 7 days a week under the Moodle booking system.

A Sectional Matrix Method for IPT Coil Shape Optimization

Venugopal Prasanth,Pavol Bauer,J.A. Ferreira 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6

In this paper, Neumann’s integral is evaluated for computing self-inductance using a multi-turn sectional matrix method. Analytical equations are derived considering the increase in dimensions of the coil due to an impinging air-gap between the turns. The resulting sectional self-inductance matrix is computed and the concepts of sectional partial self-inductance and sectional partial mutual inductance are introduced. The effects of the various partial inductances are considered as a function of the air-gap, dimensions and turns. Further, the mutual inductance of a pair of coils is considered and the coupling is obtained analytically. The coils considered are to be used for shape optimization of IPT coils. Finally, the results are compared with experimentation. This technique being generic can be applied to a number of different polygonal shapes and can be further simplified by the theory of vector decomposition of current elements. A case study with self-inductance and perimeter as optimization objective is considered.

Quantitative Comparison of the Empirical Lifetime Models for Power Electronic Devices in EV Fast Charging Application

Faezeh Kardan,Aditya Shekhar,Pavol Bauer 전력전자학회 2023 ICPE(ISPE)논문집 Vol.2023 No.-

The load profile of the power converter in EV Fast charging applications involves a short high-current pulse for rapid charging of the EV battery leading to thermal cycles on the power electronic devices. These thermal cycles can cause thermo-mechanical fatigues, which consume the power devices’ lifetime. Also, different timescales and magnitude of temperature swings lead to various failure modes. This paper compares different empirical lifetime models quantitatively in order to suggest the most appropriate model to predict the end of life of power electronic devices used in EV fast chargers. It is suggested that the selected model takes into account the most relevant failure mechanism based on the different timescales and magnitude of thermal cycles to indicate the lifetime of power electronic device used in a fast charger depending on the number of charging sessions.

Remote-Controlled Experiment with Integrated Verification of Learning Outcome

Volker Staudt,Stefan Menzner,Pavol Bauer 전력전자학회 2010 JOURNAL OF POWER ELECTRONICS Vol.10 No.6

Experiments in electrical engineering should mirror the key components of successful research and development: Understand the basic theory needed, test the resulting concepts by simulation and verify these, finally, in the experiment. For optimal learning outcome continuous monitoring of the progress of each individual student is necessary, immediately repeating those subjects which have not been learned successfully. Classically, this is the task of the teacher. In case of remote-controlled experiments this monitoring process and the repetition of subjects should be automated for optimal learning outcome. This paper describes a remote-controlled experiment combining theory, simulation and the experiment itself with an automated monitoring process. Only the evaluation of the experimental results and their comparison to the simulation results has to be checked by a teacher. This paper describes the details of the educational structure for a remote-controlled experiment introducing active filtering of harmonics. For better understanding the content of the learning material (theory and simulation) as well as the results of the experiment and the underlying booking system are shortly presented.

A Reconfigurable Phase-Shift Full-Bridge Converter for the Wide Output Voltage EV Charging Application

Dingsihao Lyu,Thiago Batista Soeiro,Pavol Bauer 전력전자학회 2023 ICPE(ISPE)논문집 Vol.2023 No.-

This paper proposes a new phase-shift full-bridge (PSFB) DC/DC converter with a reconfigurable secondary side for the wide output voltage range Electric Vehicle (EV) charging application. This converter features a two-secondary-windings transformer and two auxiliary switches. Its rectifying stage can be configured into a full-bridge rectifier when the output voltage is high or as a center-tapped rectifier when the output voltage is low. As a result, the efficiency of the proposed converter at low output voltage can be significantly improved compared to the conventional PSFB converter, making it suitable for the wide output voltage range EV charging application. This paper presents the steady state analytical modeling of the proposed converter, which is verified by circuit simulations. The loss comparison between the proposed converter and the conventional PSFB converter designed for the EV charging application is presented, and the efficiency improvement is for the proposed converter.

Comparison of Optimized Chargepads for Wireless EV Charging Application

Soumya Bandyopadhyay,Jianning Dong,Zian Qin,Pavol Bauer 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5

Inductive power transfer (IPT) is becoming increasingly popular in stationary electric vehicle charging systems. In this paper, the influence of the different IPT coupler geometries on the performance factors efficiency, power density, misalignment tolerance, and stray field is studied. Five different coupler topologies namely the circular, rectangular, double-D (DDDD) and the double-D transmitter with double-D-Quadrature receiver (DD-DDQ) are considered in this study. The electromagnetic behavior of the couplers is modeled using three-dimensional finite element analysis. To ensure a fair quantitative comparison, a multi-objective optimization framework is developed to analyze the Pareto trade-offs between conflicting performance metrics like power densities, efficiencies, and misalignment tolerance for all the considered coupler topologies.

Drives and Motion Control Teaching based on Distance Laboratory and Remote Experiments

Vogelsberger, Markus A.,Macheiner, Peter,Bauer, Pavol,Wolb, Thomas M. The Korean Institute of Power Electronics 2010 JOURNAL OF POWER ELECTRONICS Vol.10 No.6

This paper presents the organisation and the technical structure of a remote controlled laboratory in the field of high dynamic drives and motion control. It is part of the PEMCWebLab project with the goal of providing students with practical experience on real systems in the field of power electronics and drives. The whole project is based on clear targets and leading ideas. A set of experiments can be remotely performed on a real system to stepwise identify a two axes positioning system and to design different cascaded control loops. Each single experiment is defined by its goals, the content of how to achieve them, and a verification of the results as well as the achieved learning outcomes. After a short description of the PEMCWebLab project, the structure of the remote control is presented together with the hardware applied. One important point is error handling as real machines and power electronics are applied. Finally, a selection of experiments is presented to show the graphical user interface and the sequence of the laboratory.