Abstract: A vertical conveying apparatus for vertically conveying an article between at least two horizontal surfaces having different vertical positions, includes a plurality of vertical tracks, vertical conveying trucks, horizontal conveying trucks, and coupling units. The vertical tracks couple the horizontal surfaces to each other. The vertical conveying trucks are capable of vertically moving along the vertical tracks. The horizontal conveying trucks are capable of moving on the horizontal surfaces. The coupling units are respectively arranged on the horizontal surfaces, and transfer the article between the vertical and horizontal conveying trucks. Each vertical track serves, throughout the entire length, as a primary side of a linear motor. The primary side is vertically divided into a plurality of sections. The sections are connected to power sources which can be independently controlled in units of sections. The vertical conveying truck serves as a secondary side of the linear motor.

Abstract: A carrying apparatus driven by a linear motor which is capable of keeping response at the time of acceleration and deceleration almost constant in spite of the change of the weight of the carrying vehicle. At the carrying vehicle side, the magnitude of a gap between a track and the carrying vehicle, which is in the state of non-contact with the track due to an electro-magnet, and the electric current flowing through the electro-magnet is detected. The weight information related to the weight of the carrying vehicle is calculated on the basis of above detected results. The calculated weight information of the carrying vehicle is transmitted to a running control unit at the ground side. The driving force of the linear motor is adjusted on the basis of the transmitted weight information.

Abstract: A Land transportation system has an unmanned mobile box which rides in a tube from one place to another. Guides are affixed to the center of the tube to cooperate with guide rollers on the box to stabilize the running of the box. Wings are provided on the side of the mobile box to provide a buoyancy effect while the box is running, thereby reducing the friction between the box and tube. Additional rollers are placed on the bottom of the box, and come into contact with the bottom surface of the tube when the box is running at slow speeds. The mobile box is driven by linear motor, with the controller for the motor being located outside the tube, and the primary and secondary coils of the motor being located in the tube and on the box. The mobile box also has a signal generator which transmits a prememorized identification signal to a receiver outside the box, to identify destination and other information about the mobile box as it traverses the tube.

Abstract: A linear motor driven conveyor which includes a carrier rail and primary members provided within a pit, main trolleys adapted to run along the carrier rail and connected with a carrying frame, and front and rear trolleys. The connecting members are pivotably connected vertically and horizontally with each trolley within the pit, the lower surfaces of the connecting members each having a reaction plate of a linear induction motor.

Abstract: A linear motor driven conveyor apparatus is disclosed for conveying trucks carrying articles to be processed through a paint booth or other treatment area having a dirt-laden atmosphere, and a water tank is provided in the treatment area in which the secondary member of the linear motor is immersed to keep its surfaces free of contaminants.

Abstract: An electromagnetically powered drag racing ride attraction is disclosed.

Abstract: The invention relates to a linear motor feeder system in which a linear motor is supplied with driving power from equipment on the ground. Divided armature coils are serially connected two by two to form sets of the armature coils, the junction between the two armature coils in each set is connected to one feeder and both ends of the set of armature coils are connected to two feeders via respective switches, and short-circuiting switches are connected between mutually adjacent ones of the feeders. By turning these switches ON and OFF in accordance with the position of a vehicle, the linear motor is driven by a single frequency converter connected across feeders which are in turn connected across both ends of the divided armature coils.

Abstract: In a transportation system of a floated-carrier type, a carrier is suspended from a guide rail, in a non-contact manner, and is propelled along the guide rail. The transportation system includes a plurality of track units, each having the ferromagnetic guide rail, an electrical wire, and a pair of connectors provided to both ends of the electrical wire. Each track unit comprises minimum and necessary elements required for traveling the carrier. When a connector of one track unit and that of the other track unit are connected, connection of electrical wires necessary for this system is completed. For this reason, an operation for mounting the electrical wires in the track can be omitted, and installation of the track can be facilitated. Furthermore, when the travel path of the carrier is to be modified, a combination of track units can be freely changed, thus realizing various travel paths of the carrier. For this reason, the travel path can be easily modified.

Abstract: An electromagnetic linear drive including a stator which constitutes a path of movement for a vehicle. The linear drive is equipped with current conductors, and is divided into a plurality of stator elements of equal length. A movable portion which constitutes a vehicle is preferably equipped with permanent magnets cooperating with the stator to provide the drive. The stator is divided into a number of motor elements, each motor element including a minimum number of stator elements as well as an energy supply unit adapted to be switched on and off individually by sensors disposed along the path of movement. All motor elements are designed for the same maximum performance, and motor elements of different lengths are provided. The length of each motor element is determined by the local need for maximum performance per unit length which exists at the location of the respective motor element in accordance with a predetermined speed characteristic at that point along the path of movement.

Abstract: A portable amusement ride incorporates a multi-functional trailer which can serve for hauling the amusement ride, when disassembled, and serve as an elevated track portion of the ride, when assembled. Electrically powered vehicles are guided and powered over an electrified track having a main enclosed path, and an alternate loading area for discharge and pick up of passengers. Automatic launch and vehicle exit features between the main path and loading area prevent vehicle collisions, with minimum requisite operator activity. A pick-up assembly carried on the vehicle both guides and electrically powers the vehicle as it moves over the track. The track has an electrified pair of members also forming a guidance channel in which the pick-up assembly from the vehicle is received. The configuration of the pick-up assembly and its interaction with the electrified guidance channel causes proper electrical pick-up substantially regardless of the terrain formed by the track over which the vehicle travels.

Abstract: In a conveying apparatus wherein a carriage is driven by a linear motor to run along guide rails, the guide rails comprise two parallel guide members, each having a first guide surface that prevents lateral movement of the carriage, and a second guide surface that prevents vertical movement of the carriage. The carriage comprises first wheels disposed between upper and lower surfaces of the carriage for rolling along the first guide surfaces and second wheels disposed spaced apart from the first wheels in the running direction of the carriage to roll along the second guide surfaces.

Abstract: A PWM (pulse width modulation) inverter generating an a.c. output having a variable voltage and a variable frequency supplies a.c. power to a linear induction motor. An electric car supported by wheels is driven by a driving torque produced by the linear induction motor. While the electric car is running, the motor torque varies due to various factors among which a variation of the air gap length is representative. The power factor cos .phi. of the PWM inverter is detected to calculate the motor torque, and the output voltage of the PWM inverter is regulated or mechanical brakes are controlled so as to compensate the torque variation. Thus, the variation of the air gap length, which is representative of the factors giving rise to torque variations and which has been difficult to be detected, can be reliably detected to permit torque control according to the torque variation of the linear induction motor.

Abstract: The direct projection of a space vehicle, herein termed a "Space Train.TM.", into space without combustile fuel is described. A mathematical physics analysis derives critical ranges of parameters, which inlcude a vehicle having a mass of about 3,000,000 Kg., a length of about 180 m and 5 m dia.; an acceleration of about 8 g's during its travel within 1000 km of a vacuum tube parallel to Earth's surface to a velocity of about 12 km/sec., the vehicle exiting from the tube into the atmosphere at an angle of about 3.degree. and an elevation of about 3 km at a maximum deceleration of about 8 g's. An acceleration or deceleration of 8 g's is tolerable to humans in the special chair described herein. The energy imparted to this mass is provided by a conventional electric power source stored as electric energy in superconducting storage inductor rings. The electric energy is discharged to coils around the vacuum tube just in advance of the center of the moving vehicle.

Abstract: A transport control system with linear motor drive applicable for cash transport in a bank. The system uses a main controller, a rail-path, a carrier adapted to be driven along the rail-path by linear motor drive, and a plurality of stator portions coupled to the rail-path to produce a driving force in association with the carrier. Each of the stator portions includes a stator controller for controlling the driving of the carrier. The stator controller controls the driving of the carrier passing the stator portion to which the stator controller belongs to cause the carrier to reach a destination stator portion.

Abstract: The fixed magnetic structure of a linear synchronous motor for a railway system is supported above the tracks by steel ribs so that thermal expansion of the ribs is similar to expansion of steel vehicles on the railway. The moving parts of the linear synchronous motor are mounted on the vehicle so as to follow the fixed parts closely for optimum coupling of force between the fixed and moving parts.

Abstract: A conveyor system utilizing the linear motor, comprising a conveyor cart and a guide rail for movably supporting the conveyor cart. The guide rail includes primary coils, and the conveyor cart includes a flexible secondary conductor extending longitudinally of the cart so as to follow the guide rail. The primary coils comprise a station primary coil disposed at each loading and unloading station for stopping and starting the converyor cart, two primary coils adjacent opposite ends of the station primary coil for decelerating the conveyor cart that is to be stopped at the station by the station primary coil and for accelerating the conveyor cart having started from the station to a target running speed, and a plurality of intermediate accelerating primary coils disposed between two adjacent stations for accelerating the conveyor cart to maintain the latter at the target running speed.

Abstract: In the operation of railways with long-stator linear motors, the drive energy is to be applied to the vehicle from a distributing sub-station with optimally-low losses. This presumes that the entire line is not constantly supplied with energy, but is only supplied with energy in sub-regions. Only such sub-regions are to be supplied with propulsion energy in a time-suitable manner, dependent on the location of the vehicle. The propulsion traveling wave winding is sub-divided into successive sections that can be supplied with propulsion energy from the distributing sub-stations with the assistance of separate switches. A crossed double line is, likewise, divided into sections and is provided parallel to the sections, the portions of the crossed double line overlapping. The individual sections are connected to a stationary central station, which receives signals output by the vehicle in a section-associated manner.

Abstract: A conveying installation with a linear motor drive including a stator placed along a travel path and at least one conveyor unit guided along the stator in a constrained manner. The stator is divided into a plurality of stator portions. To each stator portion is assigned a braking device whose operation is dependent upon the current supply to a stator. The conveyor units are guided spaced apart by a predetermined distance. If the current supply fails, the braking devices are actuated and stop the movements of the conveyor units.

Abstract: A linear motor-driven conveyor means includes a linear motor and a linear step motor and provides high speed conveying and sotp position determining of high accuracy with a simple controlling device.

Abstract: An electrical linear motor stator is fixedly disposed along a roadway. A car supported on at least two trucks is guided for movement along the roadway. The trucks are pivotally mounted to the car for rotation about a vertical axis. Permanent magnets for interacting with the stator have one end pivotally mounted to the vertical axis of the truck and an opposite end guided, for example, using rollers, for positive movement parallel to a vertical longitudinal central plane of the stator. In this way, the permanent magnet is mounted for transverse movement to the car to permit the car to negotiate small radius curves in the roadway while still maintaining good alignment between the permanent magnet and the stator.

Abstract: An electromagnetically propelled space transportation system is provided for transporting passengers and/or freight between the Earth's surface and orbiting spaceports via reusable spaceplanes. Each spaceplane is equipped with a plurality of superconducting propulsion coils extending along its fuselage and is accelerated to orbital velocities inside a vacuum tube by a 1,530 km long electromagnetic linear accelerator. The vacuum tube is evacuated by utilizing the accelerator as a giant vacuum pump wherein a free-moving, magnetically propelled, air-tight piston is driven through the entire tube at low speed thereby forcing the air directly out the end. The spaceplanes are equipped with movable wings and other aerodynamic surfaces that are retracted during launching and extended during landing. The accelerator is capable of launching spaceplanes directly to geosynchronous orbits or onto interplanetary trajectories.

Abstract: A levitation-propulsion mechanism for an inductive repulsion type magnetically levitated railway having a vehicle with a truck and a track with a U-shaped cross-section with spaced opposed walls between which the truck runs, has a plurality of vertically positioned superconducting coils on both sides of the truck at intervals therealong in the direction of travel of the vehicle. Guidance coils are mounted on the inside surfaces of the walls of the track at intervals therealong in the direction of travel of the vehicle and opposed to the corresponding superconducting coils. Upper and lower levitation coils are positioned adjacent to the guidance conductor coils and opposed to the superconducting coils, the upper and lower coils being symmetrically positioned above and below, respectively, a horizontal line through the center of the guidance coils, and the upper and lower conductor coils are null-flux connected in a closed circuit.

Abstract: An electromagnetic linear drive is disclosed which includes a stator divided into motor elements and which constitutes a path of movement for a movable vehicle. Each motor element includes an energy supply unit adapted to be switched on and off individually and a power control unit with which a memory is associated. The memory is capable of storing a number of different running speed control signals corresponding to a number of predetermined running characteristics. The speed control signals control each power control unit so that it will supply power to its associated motor element, resulting in a locally controlled speed of the vehicle which runs over the motor element. The locally controlled speed corresponds to the running characteristics selected. This locally controlled speed lies in the range from running speed zero to a given locally specific maximum speed predetermined individually for each respective motor element.

Abstract: An electromagnetic energization system is disclosed wherein a stray alternating magnetic field is generated by conducting a current through a discrete (i.e., indefinite) length of wire or rod instead of a fine wire winding. A permanent magnet rotor is disposed so that it intersects the stray field in an appropriate manner to effect rotation of the rotor, which rotation is usable to energize or propel an object located in the vicinity of the conductor. The conductor, usable with toy vehicles and multiple track segments, is of single continuous length or is series connectable by means of quick disconnect electrical connectors. The permanent magnet rotor can be incorporated in a planetary gear system to achieve speed reduction between the spinning rotor and a drive mechanism for a mobile object.

Abstract: A transportation system of a floated-carrier type, according to the present invention, comprises a guide rail composed of main lines and branch lines, intersecting one another, a coupling section connecting the main and branch lines, and a carrier for carrying cargo, the carrier being capable of running along the guide rail. The carrier is suspended, in a non-contact manner, from the guide rail, by an electromagnetic attractive force. A transfer apparatus is provided at the coupling section. At the coupling section, the carrier, having so far been running along the main lines, is stopped, then rotated, then stopped from rotating when the carrier faces the branch lines, and then transferred to the branch lines, all in a non-contact manner. Thus, the mounting space of the transfer apparatus is small, and the carrier can be transferred from the main lines to the branch lines, without producing dust or noise.

Abstract: A magnet controller for a magnetically suspended vehicle of the linear stator type for travelling along a rail track (1) forming a linear stator having teeth of uniform determined width, responds to a rectified control signal. The control parameters for the magnet controller (21) are adjusted in response to speed to assure a stable control during standstill and at low speeds and to achieve a good response or follower characteristic of the control system at high speeds. A speed representing signal (U.sub.v) is generated in a conductor loop, preferably a double loop (9), inserted into a groove (10) of the poles (5) of the levitation magnets (2). The signal (U.sub.v) generated in the conductor loop is rectified at (31), and if desired passed through a low-pass filter (32) to provide the control input signal for the controller (21) by a very simple circuit. Utilizing just the amplitude of the speed signal (U.sub.

Abstract: A transport control system with linear motor drive applicable for cash transport in a bank. The system uses a main controller, a rail-path, a carrier adapted to be driven along the rail-path by linear motor drive, and a plurality of stator portions coupled to the rail-path to produce a driving force in association with the carrier. Each of the stator portions includes a stator controller for controlling the driving of the carrier. The stator controller controls the driving of the carrier passing the stator portion to which the stator controller belongs to cause the carrier to reach a destination stator portion.

Abstract: A conveyor means for transporting precision parts is divided into a plurality of block units and compressed air is supplied selectively to each block unit where a transporting pallet is present so as to reduce consumption of compressed air to the minimum. Also, it ensures high carrying efficiency because of its slow starting and slow stopping without reducing the speed during running.

Abstract: An automatic transportation system comprises a track mounted on a floor, a carriage having a reaction plate movable along the track, and a plurality of stators mounted on the floor along the track. A linear induction motor (LIM) for propelling the carriage is formed by the reaction plate and one of the stators. The system further comprises a detector unit including a plate mounted on the carriage and having a pair of parallel spaced first and second rows of slots, and at least one detector device disposed adjacent to one of the stators located at stations. The detector device comprises a pair of spaced first and second sensors for respectively detecting the first and second rows of slots to output a pair of pulse signals 90.degree. out of phase from each other when the carriage passes thereby. An F/V converter converts the pulse signals into a signal representative of the direction and speed of movement of the carriage.

Abstract: A railway system utilizes a discontinuous linear motor for the propulsion of a train composed of a plurality of transport units joined end-to-end, each including a group of vehicles normally maintained coupled to each other. The transport units are of the same length L and carry secondary elements of the linear motor at regular intervals. A track for the train has active sections incorporating primary inductors of the motor and separated by inactive track sections having no primary elements. The primary inductors within an active track section are disposed at regular intervals L, from center to center. In the active track sections, the linear motor provides power to the train proportional to the number of transport units.

Abstract: An electromagnetic linear drive including at least two stators divided into motor elements which constitute two paths of movement for movable vehicles in opposite directions is disclosed. An energy supply unit, including a power control unit, is associated with each of two opposed motor elements belonging to one or the other path of movement. The energy supply unit is selectively connectable to the motor element of one path of movement or to the motor element of the other path of movement, as required. When a vehicle is located above both motor elements associated with a single energy supply unit, the common energy supply unit is connected, according to a predetermined selection, to one of the two motor elements or alternated between both motor elements.

Abstract: The present invention provides a conveying system for use for carrying the work, equipped with a conveying truck having a mover of a linear pulse motor fixed at its side bottom and main travelling rails having stators mounted thereon, there being provided openings for use in operation with specified areas about the central part of the aforementioned conveying truck, thereby permitting the operation to be performed from below on the work loaded on the conveying truck, and with the stators of the aforementioned linear pulse motor located at stations for the conveying truck, the aforementioned mover and the stators composing the linear pulse motor.

Abstract: An excitation arrangement for a long stator drive for rapid transit systems has combined generation of propulsive and portative forces. The arrangement comprises at least one heteropolar magnet which has a plurality of channels extending at right angles relative to the direction of the long stator, the channels being open at their pole plane lying opposite the long stator and magnetic coils are located in the channel. The channels have a rectangular cross section extending up to the pole plane and the conductors of the magnetic coils are wound in tight contact with one another and with the channel walls on the side of the poles. The magnet comprises at least one recess extending parallel to the channels beneath the pole plane.

Abstract: In a transportation system involving a track-side linear induction motor (LIM) primary and a vehicle carrying a LIM secondary, slip power in the secondary is recovered and used to power the on-board electrical system of the vehicle. The LIM secondary has a three-phase secondary winding rather than a conventional reaction plate. The winding is connected to a rectifier which converts slip current in the windings into electrical power for the on-board electrical system. This eliminates the necessity for any sliding contacts for power transfer, while simultaneously enabling at least part of the slip power, which is normally dissipated as heat in the secondary, to be recovered.

Abstract: An excitation arrangement for a long stator drive, particularly a synchronous long stator drive for rapid transit systems having combined generation of propelling and carrying forces comprises at least one heteropolar magnet which has a plurality of channels extending at right angles to the long stator direction and which are open at their pole plane lying opposite the long stator and in which magnetic coils assigned to the conductors are disposed. In order to improve the dynamic properties of the magnet, a subdivision of the magnetic coils generating the magnetic field is provided. Differing electrical behavior for slow and fast changes in the voltage driving the coil current is achieved by a tight coupling of one of the sub-coils to a short-circuit coil. Given slow changes in the drive voltage, a magnetic force resulting from the entire coil flux occurs. Given fast changes in the drive voltage, a dynamic reduction of the effective coil inductance leads to a fast current and magnetic force changes.

Abstract: A semiconductor wafer transportation apparatus includes a car for supporting a semiconductor wafer, a track for guiding the car, and a linear induction motor for levitating and linearly propelling the car along the track. The motor includes a plurality of permanent magnets disposed on the car, a plurality of linearly disposed and selectively energizable electromagnets disposed along the track and circuitry to sequentially energize the electromagnets. Positioning magnets are used to eliminate friction between the car and the track, to control the degree of levitation and to insure precise lateral positioning of the car on the track, and light emitting diodes are used to detect the position of the car on the track.

Abstract: A plurality of spaced drive means are disposed along a conveyance path for running a carriage along the conveyance path by a forward or reverse propelling force created by the drive means. A main power source and an auxiliary power source are provided for switching a power source from the main power source to the auxiliary power source when the former becomes faulty for running and stopping the carriage at a selected one of the drive means for the purposes of preventing the carriage from stopping at an intermediate point between adjacent drive means.

Abstract: At the rotor of a synchronous linear stator motor, a stray flux measuring device (3', 3") measures the angle .theta. of the stator current distribution .phi. and a speed-measuring device (4) measures a speed containing faults. At the stator, an angle .theta.* for the impressed stator current distribution is taken off and the difference of the two angles (.theta.*-.theta.) indicating the stator current distribution is added as a correction signal to the speed (adder 5), from which the pole position (R) is determined by integration. If the pole position R is used to control the frequency of the stator current thereby, a control loop for the angle difference .theta.*-.theta. is produced which regulates the measured pole position R to the actual pole position.

Abstract: A conveyor has vertically spaced carrier and power tracks respectively supporting carriers and primary pushers, each carrier being propellable by a driving dog movable between retracted and extended positions and drivingly engageable only in the extended position by one of the primary pushers. Carriers are also advanceable along a portion of the carrier track from engagement of their driving dogs by secondary pushers movably connected to a reciprocatable transfer member supported alongside of the power track and driven on forward and return strokes by a linear motor. When operational, the secondary pushers are moved to a driving position, each driving dog engaged by a secondary pusher is held thereby in retracted position, and carriers are advanced by a forward stroke of the transfer member. When non-operational, the secondary pushers remain in a non-driving position, the driving dogs remain in extended position, and carriers are propelled by the primary pushers.

Abstract: In 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, the propelling coil of an enormous length is sectioned into a number of propelling coil 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, respectively. The propelling coil units are connected in series to one another without any interposed insulation and sectioned by a number of lead conductors so that every pair of the adjacent propelling coil units has a common coil portion shared by them and having a length not smaller than that of the vehicle. A pair of the polyphase lead conductors connected to each of the propelling coil units are connected, respectively, to going feeders and return feeders constituting the set of feeders through switches.

Abstract: In a magnetic floating type of super high speed transportation system using a linear synchronous motor system as its drive system in which a field magnet is carried on a train and a series of armature coils are provided along a track, a speed of a train is regulated under control of a frequency converter of the variable frequency and voltage type for supplying power to the armature coils. For the speed regulation, a relative position of the field magnet to the armature coils is detected to form a train of position detecting pulses. A reference frequency pattern with a frequency corresponding to a speed command is formed. A phase difference between the reference frequency pattern and the position detecting pulse train is detected. A propulsion force command of a linear motor is obtained by setting different limit values in the positive and negative parts of the phase difference signal. A sinusoidal current waveform pattern is formed in synchronism with the position detecting pulse train.

Abstract: An arrangement for distributing electrical power to one or more portions of a linear motor stator, the stator being of the type which is disposed along a track for propelling a track-bound vehicle. Current is supplied to the stator from a line conductor which is supplied at both ends by respective power supplies. In a further embodiment which is useful for distributing electrical power to long stators, double-throw switching elements are connected to the power supplies for permitting the power supply to provide current to a selectable one of two adjoining line conductors.

Abstract: The present invention comprises two control lines parallel to a rail for guiding self-propelling moving bodies. These lines are divided into sections in staggered relationship between which portions of conductor are placed. Sliding contacts, connected to the moving body, travel over the control lines to detect the state of voltage of one and to short circuit the other. A relay reverses the detection and the short circuit on passage of the sliding contacts on each of the portions of conductor. The invention is applicable to the field of handling.

Abstract: A feeding system for a linear motor transportation system in which a number of discrete drive coil units or linear motor units are arranged along a track to generate a moving magnetic field for driving trains is disclosed. In the present feeding system, a number of feeding sections extend contiguously along the track and each of the feeding sections includes at least one power supply station. Each feeding section is divided into at least two linear motor blocks each having a feeder block. The linear motor units in each of the linear motor blocks are connected through associated ones of a first group of switches to the associated feeder means which are connected to the power converter of the associated feeding section through associated ones of a second group of switches. Preferably, those adjacent two feeder blocks which belong to adjacent different feeding sections respectively are coupled together through an associated one of a third group of switches.

Abstract: A turntable bearing tracks at a switching point in an amusement ride course, or other vehicular path having tracks, utilizes two linear induction motors, one for rotating the turntable and one for latching the turntable at selected rotational positions. The linear induction motors are mounted beneath the turntable and operate with an extremely high degree of reliability.

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 controller.

Abstract: A conveyance system having an overhead guide rail above a surface and one or more vehicles which are guided by the rail and partially supported on the surface by a wheel structure. Preferably, the guide rail includes the stator of a linear induction motor which cooperates with a rotor element in a propulsion member for the vehicle. A handpole on the vehicle connects the propulsion member to a passenger-carrying platform on the wheel structure. The handpole is sufficiently vertical to be readily grasped by a passenger for support while riding and assistance in getting on and off the vehicle, and yet the pole is sufficiently inclined to partially support the vehicle and permit its movement in response to the propulsion member. The preferred system uses simple, lightweight vehicles which can be readily installed over a pre-existing surface such as a sidewalk or corridor and are arranged to move continuously therealong at a slow passenger-transfer speed and a faster speed between transfer points.

Abstract: A transportation device with an electrodynamic suspension comprises a motor system, a suspension system, and a transverse stabilization system, the systems being provided with field coils of the motor, levitation and transverse stabilization, arranged on a vehicle, and a single-layer three-phase armature winding mounted horizontally along a track bed. The armature winding consists of active portions of turns formed as plates up to one third of the pole pitch of the armature winding in width, and end portions formed in two layers and made as rectangular plates mounted parallel to the track axis. The end portions of the three-phase armature winding are used as reactive buses or conveyors of transverse stabilization. At least one layer of the end portions is mounted parallel to the planes of the field coils of transverse stabilization.

Abstract: A circuit arrangement for starting a trackbound electric propulsion vehicle having a synchronous linear motor without iron in which the motor's stator is a traveling-field winding installed along the track. The exciter of the motor is a translator arranged on the propulsion vehicle, preferably as a superconducting magnet coil. The traveling-field winding is powered, section by section, from stationary, controlled, static converters at voltages and frequencies which can be varied by a control device. The relative position of the exciter with respect to the traveling-field winding and the travel velocity are determined by a computing circuit from the phase currents and voltages at the feed point. In starting, the control circuits of the control device are opened and a starting circuit is added instead. The starting circuit determines the required thrust, the travel velocity, and the exciter position relative to the traveling-field winding from a velocity reference value controlled by a start-up generator.