To solve the problem of harmonic pollution to the power grid that caused by traditional diode rectifier and phase controlled rectifier, the unit power factor PWM rectifier is designed. The topology structure of the rectifier circuit is introduced and the double closed-loop control strategy in three-phase stationary coordinate system is analyzed. For the deficiency of control strategy, the contr...

Department of General and Experimental Pathology, University of Vienna, A-1090 Vienna, Austria Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, USA Boehringer Ingelheim R&D Vienna, A-1121 Vienna, Austria __________________________________________________________________________________________________ Correspondence: Renate Fuchs, Department of General and Experimental...

From the Department of Internal Medicine I, Div. of Hematology/Hemostasis (SE, VS, AW, PAK), the Ludwig-Boltzmann Institute for Thrombosis Research (SE, PAK), and the Department of Internal Medicine II, Div. of Angiology (EM), all University of Vienna, Vienna; the Wilhelminenspital, Department of Dermatology (CB), Vienna; the Hanuschkrankenhaus, Department of Angiology (MH), Vienna; the Institu...

Address: 1Community Mental Health Services, Caritas St. Poelten, Dr. Karl Renner Promenade 12, A-3100 St. Poelten, Austria, 2Division of Social Psychiatry, Vienna Medical University, Währinger Gürtel 18-20, A-1090 Vienna, Austria, 3Justizanstalt Mittersteig, Mittersteig 25, A-1050 Vienna, Austria and 4Department of Medical Statistics, Vienna Medical University, Spitalgasse 23, A-1090 Vienna, Au...

Address: 1Centre of Biomolecular Medicine and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria, 2Institute of Molecular Pathology (IMP), 1030 Vienna, Austria, 3Research Center for Molecular Medicine of the Austrian Academy of Sciences (CeMM), 1090 Vienna, Austria, 4NIDDK, National Institute of Health, Bethesda, MD 20892, USA and 5Ludwig-Boltzmann Institute for Cancer Research (L...

1Austrian Centre of Industrial Biotechnology ACIB, 8010 Graz, Austria 8 2 Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, 9 Vienna, 3430 Tulln, Austria 10 3 Microbiology Group, Research Area Biotechnology and Microbiology, Institute of Chemical 11 Engineering, Vienna University of Technology, 1060 Vienna, Austria. 12 4 Institute of Biotechnology, Uni...

An efficient rectifier system along with an impedance matching network is proposed in this article. Impedance matching network is designed using two microstrip lines. Rectifier system for better RF to DC conversion is designed using a bridge rectifier. The proposed rectifier system provides a maximum efficiency of 50%. The impedance matching network improves the overall system performances sign...

a Geological Paleontological Department, Natural History Museum Vienna, Vienna, Austria b Department of Geodesy and Geoinformation, Research Group for Photogrammetry, Vienna University of Technology, Vienna, Austria c Department of Palaeontology, University of Vienna, Vienna, Austria d 4D-IT GmbH, Vienna, Austria e Department of Geophysics and Space Science, Eötvös University, Budapest, Hungary...

Address: 1Department of Pharmacology, Medical University of Vienna, 1090 Vienna, Austria, 2Division of Developmental Immunology, Medical University of Innsbruck, 6020, Austria, 3Institute of Animal Breeding and Genetics, Veterinary University of Vienna, and Austrian Center for Biomodels and Transgenetics (ÖZBT VUW), 1220 Vienna, Austria and 4Ludwig Boltzmann Institute for Cancer Research, 1090 ...

A novel rectifier topology for high power (0.5 to 10 MVA) current source based ac motor drives is proposed. This rectifier is composed of a multi-winding transformer, a multi-level diode rectifier and a modified multi-level buck converter. The rectifier produces near unity input power factor and sinusoidal input current under any operating conditions. In addition, the proposed rectifier feature...