Voltage and current source inverter are widely used in electrical motor drives. In this drives, DC voltage (or current) are usually provided from phase control or line commutation rectifiers. Because of disadvantage & limitation of this converter, some new topologies are presented in advanced drive such as PWM rectifier. Thanks to well known capabilities of PWM rectifier, classical converter’s ...

The rectifier has important influence on a DC/DC converter’s characteristics including the efficiency, the output voltage ripple and the dynamic behavior. By analyzing the difference between the center trapped rectifier and the double current rectifier, this document explains and demonstrates the advantage of the current doubler rectifier for DC/DC converters with especially high power but low ...

1 Center for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Spitalgasse 23, 1090 Vienna, Austria. 2 Section of Evidence Based Medicine (EBM) and Health Technology Assessement (HTA), Main Association of Austrian Social Security Organisations, Austria. 3 Research Group Knowledge Engineering, Faculty of Computer Science, University of Vienna, Währinger Stra...

G.Hudelist, H.Lass, J.Keckstein, I.Walter, F.Wieser, R.Wenzl, R.Mueller, K.Czerwenka, E.Kubista and C.F.Singer Department of Obstetrics and Gynecology, Division of Special Gynecology, Vienna Medical University, 1090 Vienna, Department of Obstetrics and Gynaecology, LKH Villach, 9500 Villach, Department of Obstetrics and Gynecology, Wilhelminenspital, 1060 Vienna, Department of Histology/Embryol...

1 Institute of Ecology and Conservation Biology, University of Vienna, Althanstraße 14, A-1090 Vienna, Austria. [email protected] 2 International Institute for Applied Systems Analysis, A-2361 Laxenburg, Austria. [email protected] 3 Survey Office Schmid, Kreilplatz 1/2, A-1190 Vienna, Austria. [email protected] 4 Institute for Urban and Regional Research, Technical University Vienna, Ka...

1 Clinical Imaging Research Centre, National University of Singapore, Singapore 2 Molecular Imaging Program, Stanford University, Stanford, CA, USA 3 Department of Radiation Oncology, Medical University of Vienna, Vienna, Austria 4 Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria 5 MR Center of Excellence, Medical University of Vienna, Vienna,...

Guidelines for distributing a buck converter rectifier for application to three-dimensional (3-D) circuits is described. The 3-D rectifier exploits the properties of transmission lines to generate and distribute power supplies to different planes. As compared to a conventional rectifier, the proposed rectifier circuit only requires moderately size capacitors without the use of onchip inductors....

SPECTROSCOPY OF EXPERIMENTALLY SHOCK METAMORPHOSED QUARTZITE. Arnold Gucsik, Christian Koeberl, Franz Brandstätter, Eugen Libowitzky and Wolf Uwe Reimold, Institute of Geochemistry, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria. ([email protected]) Institute of Geochemistry, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria. ([email protected]) Depa...

Single, double, and triple mutations progressively shift Shaker activation to more hyperpolarized potentials, resulting in an increase in the fraction of inactivated channels at negative resting voltages. The most negatively shifted mutation, the triple mutant, behaves like an inward rectifier. What is usually considered activation of an inward rectifier is, for the triple mutant, recovery from...

Power quality problems caused by significant increase of non-linear loads initiated intensive research in high power factor converters. Most of the modern power electronic systems like variable speed drives, DC power supplies and battery charging systems uses uncontrolled diode bridge rectifier. The uncontrolled rectifier system injects lot of harmonics in to the AC supply system there by reduc...