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To the comparative evaluation of three-unit lorry convoys of the different component systems by maneuverability

Sakhno Volodymyr, Poliakov Viktor, Lyashuk Oleg, Murovanyi Igor, Stelmashchuk Valeriy, Onyschuk Vasyl, Tson Oleg, Rozhko Natalia

Zeszyty Naukowe. Transport / Politechnika Śląska

2023

z. 121

189--201

The article deals with the maneuverability of three-link road trains with various layout schemes. If a train has more than three links, difficulties arise in that the study of the movement of such a multi-link vehicle is significantly complicated due to the need to take into account the influence of a significant number of factors on the nature of the movement of all links. The interaction of neighboring units in the movement of a train is eventually distributed to the entire vehicle and causes certain deviations of the components of the train (modules) from the direction of movement specified by the driving link (tractor). Considering that a road train as a motor vehicle is a means of increased danger, when solving problems about the possibility of operating three- and multi-link road trains, it is one of the first to take steps towards theoretical studies of their maneuverability, the results of which will be the basis for answering many technical, organizational, and legal questions. Analysis of the calculation results showed that in the established circular path with the selected gear ratios of the control drives, none of the road trains met the requirements of DIRECTIVE 2002/7 / EC. From this, it follows that for three-link road trains, a fundamentally different control drive is needed, which can be a double control drive.

Multiphase cage induction motors for controlled drives

Drozdowski P.

Maszyny Elektryczne : zeszyty problemowe

2011

Nr 5(93)

7-12

General control possibilities of the drive with a multiphase cage induction motors having number of phases greater than 3 are subject of the paper. The motors have additional properties for speed control distinguishing them from the standard 3 phase motors. They are connected with operation at various sequences of supplying voltages due to the inverter control and possible operation with open-circuited phases. This allows for different no load speeds at the same frequency. Applying vector or scalar control this feature extends applications for miscellaneous drive demands including sensor-less control. The main features of the motors depend mainly on type of the stator winding for a given number of phases. Example of operation was presented for a 9-phase motor, though general approach was discussed. The motor was supplied from a voltage source inverter and controlled with field orientation under forced currents. The mathematical model of the motor was reduced to the minimum form incorporating all most important physical features and appropriate for the control law formulation.

Analiza pracy układu falownik tranzystorowy podwyższonej częstotliwości - silnik indukcyjny jako przykład napędu sterowanego w lotnictwie

Buczek K., Sobczyński D.

Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika

1998

z. 51[168], t.2

445-451

Przebadano i przeanalizowano układ napędowy składający się z 3-fazowego silnika indukcyjnego zasilanego z falownika napięcia o podwyższonej częstotliwości pracy z przewidywanym zastosowaniem do sterowania mechanizmami występującymi w lotnictwie sprzęcie wojskowym. Układ ten można zastosować w miejsce dotychczas stosowanego silnika komutatorowego. Badania prowadzone były do prędkości 20000 obr/min i mocy wyjściowej na wale silnika do l kW. Analiza własności dynamicznych została przeprowadzona w oparciu o model cyfrowy, symulacje przeprowadzono przy użyciu programu analizy obwodów nieliniowych PSpice. Wyniki badań laboratoryjnych jak i analiza przebiegów czasowych dała rezultaty stwierdzające przydatność tego typu napędu w wyżej wymienionych zastosowaniach.

The high frequency inverter feeling a three-phase induction motor drive used to control the aircraft and military mechanisms has been analysed and investigated. Proposed drive can apply instead of AC brush motor. The drive has been tested up to speed 20000 rpm and power level up to 1 kW. The transient analysis based on digital model and the simulation has been made using PSpice simulator. Experimental and simulation results are presented and discussed in the paper.