Abstract: A transport device and a transport method efficiently increase a thrust to suppress power consumption. The transport device has a first magnetic body on a side of a to-be-transported object, a magnetic circuit with a core consisting of a second magnetic body, and a winding wound around an outside of the core, and a drive circuit supplying a current to the winding of the magnetic circuit. The magnetic circuit has first and second magnetic circuits, and in a case where the first magnetic body is located on a side of the second magnetic circuit relative to a first predetermined position between the first magnetic circuit and the second magnetic circuit, the drive circuit supplies a current to a winding of the first magnetic circuit in such a manner to cause an electromagnetic repulsive force to be generated between the first magnetic body and the first magnetic circuit.

Abstract: A rotating electromechanical machine has a rotor having at least one current-carrying winding and at least one rotor-mounted sensor configured to sense a machine property or parameter during machine operation. Rotor-mounted circuitry dynamically modifies at least one property of the current-carrying winding during machine operation in response to the sensed machine property or parameter.

Abstract: An electrical machine having a rotor component configured to rotate with respect to a stator component includes a sensing arrangement to sense electrical, magnetic, and/or mechanical machine parameters during machine operation. The electrical machine also includes a fluid sprayer coupled to a cooling controller. The cooling controller activates the fluid sprayer to spray cooling fluid on a portion of the electrical machine in response to in response to the sensed electrical, magnetic, and/or mechanical machine parameters.

Abstract: A high torque AC motor of the repulsion type that includes at least four stator poles and an armature with chordally oriented windings. The armature windings are cyclically shorted and opened in groups at appropriate angular positions of the armature by a non-contact switch circuit carried on the armature.

Abstract: A system for controlling the speed of a brushless repulsion motor having a series of switches mounted on a rotating armature for shorting circumferentially spaced armature coils comprising first stationary signaling means and a plurality of rotating detectors for activating said switches; second stationary signaling means for speed control; a plurality of markers on the rotating armature; a speed detector for detecting the speed of the rotating markers and generating a speed feedback signal; means for generating a speed command signal; an error calculator for comparing the speed feedback and speed command signals and generating an error signal; and a controller for controlling the signaling means based on the error signal.

Abstract: Brushless repulsion motors are presented, in which rotor coils switching signal detectors are selectively located in spaced angular relationship on the rotor and signaling sources are distributed around all or most of the stator circumference to allow looser tolerances for motor manufacturing and improved controllability of rotor coil actuation during operation. Asymmetric stator poles are also provided for brushless repulsion motors to mitigate torque ripple and vibration, in which the shape of the stator pole tips is tailored by varying the angular length of the pole section.

Abstract: The radial/rotary propulsion system of the present invention features a flywheel having concentric rings of permanent magnets attached to one or both sides or embedded into the flywheel. These permanent magnets interact with DC powered electromagnets which, when selectively energized, impart rotary motion to the flywheel. By arranging the permanent magnets in concentric rings, better control of both speed and torques may be obtained. In addition, in a regenerative mode, inertia of the flywheel is reconverted to electrical energy by either additional permanent magnet/coil combinations or through the switching of the electromagnet coils normally used for rotating the flywheel. A controller/sequencer constantly receives input signals for throttle, braking, flywheel rotational position, and battery level, and in response provides signals to control activation of electromagnets for drive, braking, and regeneration.

Abstract: A system for controlling the speed of a brushless repulsion motor having a series of switches mounted on a rotating armature for shorting circumferentially spaced armature coils comprising first stationary signaling means and a plurality of rotating detectors for activating said switches; second stationary signaling means for speed control; a plurality of markers on the rotating armature; a speed detector for detecting the speed of the rotating markers and generating a speed feedback signal; means for generating a speed command signal; an error calculator for comparing the speed feedback and speed command signals and generating an error signal; and a controller for controlling the signaling means based on the error signal.

Abstract: A method for controlling an induction motor using an equivalent circuit model, the equivalent circuit having a real component and an imaginary component, is disclosed. The method instead of measuring a plurality of induction motor parameters, the real and the imaginary component of the induction motor impedance are calculated based on the measured phase currents and voltages. The invention calculates a first control function based on the real component of the induction motor impedance, and a second control function based on the imaginary component of the induction motor impedance, and adjusts the induction motor excitation frequency until the first control function is approximately equal to the second control function. After the excitation frequency is determined, the motor torque is calculated by taking the square of motor voltage in the d-q reference frame.

Abstract: A speed control system for a brushless repulsion motor of the type including a series of armature mounted switches for shorting circumferentially spaced armature coils, said system comprising: a digital counter on the armature for creating a repetitive succession of switch activating signals in a selected sequence at a given rate determined by the counting rate of the counter; means for activating the switches with the signals in the sequence and at the rate to control the speed of the armature; and, means for directing a reference pulse signal at a reference frequency to the counter to set the counting rate of the counter.

Abstract: An armature mounted armature speed control system for a brushless repulsion motor of the type including a series of coil switches on the armature for shorting a succession of armature coils and detectors on the armature for operating each of the switches when the armature coil shorted by a switch is at a selected rotational position, the system comprising: a ring counter with sequentially energized output lines for receiving signals in sequence at a rate controlled by the reference frequency of count pules at the input of the counter, means for operating the switches in sequence by the counter created signals to control the speed of the armature at a set point and a selector switch shiftable upon receipt of a shift signal between a first condition with the signals from said counter operating the coil switches and a second condition with the detectors operating the coil switches.

Abstract: A brushless repulsion motor in which the rotor carries electronic switch circuits for selectively shorting the rotor windings at appropriate times in its rotational cycle. A non-contact reference signal source on the stator enables the electronic circuitry to operate as desired. The disclosed motor arrangements are useful as substitutes for conventional brush-type repulsion motors, universal series motors, synchronous motors, servomotors and stepping motors.

Abstract: A brushless repulsion motor in which the rotor carries electronic switch circuits for selectively shorting the rotor windings at appropriate times in its rotational cycle. A non-contact reference signal source on the stator enables the electronic circuitry to operate as desired. The disclosed motor arrangements are useful as substitutes for conventional brush-type repulsion motors, universal series motors, synchronous motors, servomotors and stepping motors.

Abstract: A brushless repulsion motor in which the rotor carries electronic switch circuits for selectively shorting the rotor windings at appropriate times in its rotational cycle. A non-contact reference signal source on the stator enables the electronic circuitry to operate as desired. The disclosed motor arrangements are useful as substitutes for conventional brush-type repulsion motors, universal series motors, synchronous motors, servomotors and stepping motors.

Abstract: A brushless repulsion motor in which the rotor carries electronic switch circuits for selectively shorting the rotor windings at appropriate times in its rotational cycle. A non-contact reference signal source on the stator enables the electronic circuitry to operate as desired. The disclosed motor arrangements are useful as substitutes for conventional brush-type repulsion motors, universal series motors, synchronous motors, servomotors and stepping motors.