Energy Properties of a Contactless Power Supply in PRT (Personal Rapid Transit) Laboratory Model

Abstract

Article citation info: (*) Tekst artykułu w polskiej wersji językowej dostępny w elektronicznym wydaniu kwartalnika na stronie www.ein.org.pl the framework of the ECO Mobility project. This project has not yet been implemented for transport applications but has nevertheless been tested on a test track for scale vehicles. A fragment of track in scale was recently presented at the Hannover Fair at the SciTech Poland "scientific" Polish stand [7,28].The already mentioned power supply is a contactless, dynamic power system, which means that it can deliver energy to the vehicle in motion as opposed to stationary systems where energy is delivered only when the vehicle is stationary. The drive motor is a linear induction motor. This system solution illustrates one of the many possibilities that can be applied to the driving and powering of this type of vehicle. The power supply can also be made as a contact one with power points at parking places. Propulsion motors can be made as brushless, induction and wheeled or as central units. On the other hand, the contactless power supply has the advantage of being a safe system [23,30]. The supply energy is transmitted inductively from the primary winding distributed along the track -similarly to the third rail in the metro. The fundamental difference between the contact supply by means of the third rail and the contactless induction is that the contact rail "power" is isolated and thus safe.

Analysis of dynamics of a scaled PRT (personal rapid transit) vehicle

“…Fig. 3b shows the speed curve of a strenuous cycle completed in the selected interstation section, as determined by taking into account the limitations to the drive system's operating conditions [30]. The purpose of the study is to analyse the motion stability of the vehicle model in the test guideway (featuring straight and curved sections as well as switches) for the running conditions defined under the planned experiment, i.e.…”

“…Mexican ModuTram system launched in 2014 at the WTC Morelos Convention Centre in Mexico [5]. Scaled physical model of a PRT vehicle at a laboratory testing station [30] The PRT transport system is a subject which has already been addressed in numerous publications. "At the beginning, initial concepts of automatic transport were presented [6,7], and relationships between the political milieu and technological innovations were analysed [8].…”

“…The Faculty of Electrical Engineering and the Faculty of Transport of the Warsaw University of Technology built two laboratory testing stations to run experimental tests of a PRT system in a scale of 1:4. The most recent publications include papers addressing the problems of traffic control [28], dimensioning of a contactless power supply system for PRT units [29,30,18], or a linear induction motor design intended for PRT [31].…”

“…Model's arrangement of solid bodies: a) overview, b) right wheel's set of passive switch rollers. Designations: WLF WRF WLR WRR -wheels: left front, right front, left rear, right rear, F and R -front and rear wheel set, R1 and R2 -inner rollers, RF -outer roller a) b) PRT model's running conditions: a) laboratory guideway fragment used for the trial run, b) velocity profile[30]. Designations: START -initial station, STOP -terminal station.…”

Innovative Urban Transport System – Autonomous and Locally Low-Emission

“…The view of the completed PRT system on the laboratory scale is presented (Fig. 6) [5]. The applied construction solutions required a special design approachthe virtual pre prototyping procedure was used here.…”