Patent
Power supply system for linear motor
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TLDR
In this paper, a power supply system for a linear motor comprising a plurality of driving coils disposed along the track for a running body for generating a shifting magnetic field to drive the running body, power converter means for feeding the driving coils with electrical energy.Abstract:
A power supply system for a linear motor comprising a plurality of driving coils disposed along the track for a running body for generating a shifting magnetic field to drive the running body, power converter means for feeding the plurality of driving coils with electrical energy, a plurality of switches responsive to the movement of the running body for selectively electrically connecting each of the driving coils to the power converter means, a first reactive power controller continuously electrically connected to the power input side of the power converter means, and a second reactive power controller selectively electrically connected to the power input side of the power converter means in accordance with the movement of the running body, whereby the steady reactive-power is compensated for by the first reactive power controller and the reactive power which varies with the movement of the running body is compensated for by the second reactive power controllerread more
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References
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Patent
Power supply system for a linear motor
TL;DR: In this article, a linear motor composed of a propelling coil laid on continuously along a track and a field system mounted on a vehicle for driving it is sectioned into a number of propelling coils units which are connected alternately to two sets of feeders by means of switches, the feeder sets being supplied with polyphase currents from different power converters.
Patent
Feedback control circuit for magnetic suspension and propulsion system
TL;DR: In this paper, a non-linear feedback circuit is used to adjust the voltage applied to the phased windings of a linear motor to maintain the selected gap, and a wide dynamic range of motor control voltage is provided to cover the propulsion range from standstill to high speed.
Patent
System for operating a self-propelled track bound vehicle with a linear synchronous motor
TL;DR: In this article, a co-moving translator was used for the operation of a track-bound self-propelled vehicle driven by a synchronous linear motor with the stator of the linear motor installed along the roadway as a traveling field winding.
Patent
Correction system for regulating the power factor of an electrical network
TL;DR: In this article, the phase difference between the potential V and the current I of a distribution line is measured, and the measured phase difference compared with first and second predetermined reference limits.
Patent
Reactive power compensation control system
TL;DR: In this paper, a reactive power compensation control system is provided for a three phase ac electric power supply system which exhibits power factor changes when subjected to large reactive draws by dynamic reactive loads, the control system comprises four capacitor banks switchable in or out of the power system by solid state switches, each bank comprises three delta connectible capacitors, one capacitor for each pair of phase lines, and each capacitor is switched by one solid state switch.