Patent
Linear asynchronous electric motors
TLDR
In this article, an auxiliary polyphase winding parallel to the track and wound so as to create a sliding field, synchronous with the field of the inductor, is arranged mechanically so that relative motion between it and the axis of the induction in translation along the track is absent.Abstract:
The motor has a passive conductive track, comprising an inductor winding intended to be traversed by a direct current, of superconducting material, placed in a cryostat, rotary with the cryostat around an axis parallel to theplane of the track and perpendicular to the direction of relative movement of the track and of the inductor. An auxiliary polyphase winding parallel to the track and wound so as to create a sliding field, synchronous with the field of the inductor, is arranged mechanically so that relative motion between it and the axis of the inductor in translation along the track is absent. The auxiliary polyphase winding may be flat and comprise coils whose separation increases from its medium plane, in line with the axis of the inductor.read more
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Patent
Magnetic actuation and positioning
TL;DR: In this article, magnetic forces are used as a controlled actuation mechanism to move and position objects of interest, such as a first spherical surface has at least one magnetic positioner attached to it, and a second spherical surface is positioned to move relative to it.
Patent
Trapped-field, superconducting, induction-synchronous motor/generator having improved startup torque.
TL;DR: In this article, a motor/generator that is operable in an inductive mode during a startup phase and in a synchronous mode thereafter is described, where a trapped field in the superconductor provides coupling between the stator and the rotor.
Patent
Vehicle and high-speed transport system having rotating alternating polarity magnet member for levitating, propelling, and guiding the vehicle
Hideki Aruga,Minoru Toyoda,Yoshihiro Kyotani,Shuzo Moroto,Masao Kawai,Toshihiro Shiimado,Yoshihisa Ito,Koji Hori +7 more
TL;DR: A rotary magnetic field member has magnetic poles of different polarities alternately arranged around its circumference as mentioned in this paper, rotating relative to the roadway made of an electrically conductive non-magnetic material, forms a varying magnetic field in cooperation with the roadway, thereby generating propulsion force for propelling the vehicle and force for suspending the vehicle, so that the vehicle is propelled in a floating state.
Patent
Power collection system for transportation systems
TL;DR: In this paper, a power collection system for a transportation system with a vehicle and a guideway includes a stator winding disposed in the guideway for generating a traveling magnetic field which propagates in the vehicle, and a rotating magnetic rotor disposed in a vehicle including a plurality of magnetic poles which couple with the traveling magnetic fields and synchronize the local field of the rotor adjacent the stator wound with the travelling magnetic field.
Patent
Power and free roller conveyor
TL;DR: A power and free roller conveyor has a plurality of spaced rollers defining a conveyor path and to each of which is fixed a drive that comprises the secondary of a linear induction motor as discussed by the authors.
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Patent
Magnetic suspension system
TL;DR: In this article, an improved magnetic suspension system was proposed for vehicles where a propelled magnet is both levitated and guided by repulsion from eddy currents that are induced in a nonferromagnetic and continuous conductor.
Patent
Transportation system employing an electromagnetically suspended,guided and propelled vehicle
R Thornton,H Kolm +1 more
TL;DR: In this paper, a system that includes an elongate cylindrical vehicle operable to travel along a similarly-shaped, trough-like guide-way is described, where at stations along the guideway, the vehicle is supported by wheels, but between stations it levitates at about 25 centimeters above the inside guideway surface.
Patent
Synchronous alternating current electrical machines
TL;DR: A synchronous AC generator has a DC excited superconducting field winding on the rotor and a nonsuperconducting armature wound on the stator as mentioned in this paper, and the armature winding is composed of active conductors and of reactance conductors connected in series with the activeconductors.
Patent
Transportation system employing magnetic levitation, guidance and propulsion
TL;DR: In this article, a vehicle is magnetically levitated, guided and propelled along a guideway by interaction between further superconducting coils and the field of a linear synchronous motor.