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Dive into the research topics where Jānis Greivulis is active.

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Featured researches published by Jānis Greivulis.


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 | 2008

Aspects of Creation of Asynchronous Oscillating Electric Drives

Uldis Antonovičs; Aleksandrs Gasparjans; Jānis Greivulis; Aleksandrs Terebkovs


Archive | 2008

Wave Energy Conversion Potential of the Baltic Sea

Ansis Avotiņš; Jānis Greivulis; Līvs Kalniņš


Archive | 2009

Analogo elektronisko shēmu analīzes un aprēķina metodes

Jānis Greivulis; Nadežda Kuņicina


publication.editionName | 2010

Magnētiski saistītu tinumu parametru kontroles iekārta

Jānis Greivulis; Aleksandrs Gasparjans; Aleksandrs Terebkovs; Jānis Doniņš


publication.editionName | 2010

Magnetically Coupled Winding Parameter Control Device

Jānis Greivulis; Aleksandrs Gasparjans; Aleksandrs Terebkovs; Jānis Doniņš


publication.editionName | 2010

Rod Inductor Machine

Aleksandrs Terebkovs; Jānis Greivulis; Aleksandrs Gasparjans; Jānis Doniņš


Engineering for Rural Development. Proceedings of the 8th International Scientific Conference, Jelgava, Latvia, 28-29 May, 2009 | 2010

PULSE DENSITY MODULATION CIRCUIT

Jānis Greivulis; Jānis Doniņš


publication.editionName | 2009

Application of Supercapacitor Energy Storage Devices

Viesturs Bražis; Jānis Greivulis


Archive | 2009

Analysis and Calculation Methods of Electronic Analog Schemes

Jānis Greivulis; Nadežda Kuņicina

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