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Dive into the research topics where Viesturs Bražis is active.

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Featured researches published by Viesturs Bražis.


Scientific Journal of Riga Technical University. Power and Electrical Engineering | 2009

The Mechanical Transient Process at Asynchronous Motor Oscillating Mode

Uldis Antonovičs; Viesturs Bražis; Jānis Greivulis

The Mechanical Transient Process at Asynchronous Motor Oscillating Mode The research object is squirrel-cage asynchronous motor connected to single-phase sinusoidal. There are shown, that by connecting to the stator windings a certain sequence of half-period positive and negative voltage, a motor rotor is rotated, but three times slower than in the three-phase mode. Changing the connecting sequence of positive and negative half-period voltage to stator windings, motor can work in various oscillating modes. It is tested experimentally. The mechanical transient processes had been researched in rotation and oscillating modes.


publication.editionName | 2007

Application of Supercapacitors for Storage of Regenerative Energy in T3A Tramcars

Viesturs Bražis; Leonards Latkovskis


The 1st Virtual Multidisciplinary Conference QUAESTI | 2013

A Digitally Controlled Test Bench for DC Electrical Drives

Kaspars Kroičs; Viesturs Bražis


Archive | 2010

Chapter 14: Simulation of On-Board Supercapacitor Energy Storage System for Tatra T3A Type Tramcars

Leonards Latkovskis; Viesturs Bražis; Linards Grigāns


publication.editionName | 2017

DC Power Line Loss Simulation Method by Using Variable Resistor in Matlab Environment

Ģirts Staņa; Viesturs Bražis


publication.editionName | 2015

Digitally Controlled 4-Phase Interleaved DC-DC Converter with Coupled Inductors for Storage Application in Microgrid

Kaspars Kroičs; Uģis Sirmelis; Linards Grigāns; Viesturs Bražis


publication.editionName | 2014

Design of Coupled Inductor for Interleaved Boost Converter

Kaspars Kroičs; Uģis Sirmelis; Viesturs Bražis


publication.editionName | 2014

Digitally Controlled Synchronous Buck-Boost Converter for Ultracapacitor Based Energy Storage Application

Kaspars Kroičs; Viesturs Bražis


The 2nd International Virtual Conference on Advanced Scientific Results | 2014

Digitally Controlled Synchronous Buck-Boost Converter with Coupled Inductor for Ultracapacitor Based Energy Storage Application

Kaspars Kroičs; Uģis Sirmelis; Viesturs Bražis


12th International Scientific Conference „Engineering for Rural Development” | 2013

RESEARCH IN ELECTRIC TRANSPORT SUPERCAPACITOR ENERGY STORAGE SYSTEM

Genadijs Zaļeskis; Leonards Latkovskis; Viesturs Bražis

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