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Document Title |
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7554284 |
Inductance contactless starter
An inductive contactless starter for single-phase AC motor, comprising a current inductor and a triac; wherein, one terminal of secondary coil of said current inductor is connected to the gate...
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7459878 |
Method and circuit for controlling sensorless single-phase BLDCM
The method and circuit for controlling a sensorless single-phase BLDCM having a stator with a winding are proposed. The provided controlling circuit includes a power supply circuit, an inverter...
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7199549 |
Feedback parameter estimation for electric machines
A method and system for estimating a parameter of an electric machine, including a controller and a switching device, the controller executes a parameter estimation process, which is responsive to...
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7061204 |
Motor starter device having reduced power consumption
A motor starter for use with a motor ( 20 ) having a main winding (M) and a start winding (S). The starter has a PTC thermistor ( 30 ) connected in series with the start winding (S). A triac ( 40 )...
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6940249 |
Inverter device
An inverter device capable of smoothly driving an alternating current synchronous motor of large capacity and high-speed rotation is provided. The inverter device includes a power rectification...
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6653806 |
Dynamic brake circuit and semiconductor inverter using dynamic brake circuit
The invention prevents the voltage change dv/dt occurring at an inverter from directly igniting a semiconductor braking switch and short-circuiting the inverter during operation. In a dynamic...
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6605918 |
System and method for compensating the reading of noncontinuous AC sinusoidal currents
A motor controller for a motor operated by an AC line voltage includes solid-state switches connectable between an AC line and a motor terminal for controlling application of AC line voltage to the...
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6570359 |
Motor starting circuit
A starting circuit for a single phase motor having a main winding and a starting winding has a triac in series with the starting winding, and a current sense device in series with the main winding....
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6479961 |
Starting system for an electric motor
A starting system for an electric motor having a main coil and an auxiliary coil which are supplied current by an electric current source in which a switch is connected between the electric current...
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5814966 |
Digital power optimization system for AC induction motors
A method and apparatus are disclosed for improving the efficiency of operation of AC induction motors. The method and apparatus utilizes a microprocessor to tune a motor control system such that...
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5386184 |
System for use with an electronically commutated electrical machine
A modified inverter/converter unit electronically commutates a switched reluctance machine to provide multiple voltage levels for engine and aircraft applications. A set of power switching...
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5359272 |
Sensorless drive control and method for doubly-fed reluctance motor
A doubly-fed reluctance motor (10) has a primary winding set (20) and a secondary winding set (22). A drive control (32) for the motor includes a connection (36) to the primary winding so primary...
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5212436 |
Single phase motor start system
An autotransformer is used to replace the start capacitor in a split phase induction motor. The autotransformer windings are protected by a PTC resistor which also serves to effectively de-energize...
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5206573 |
Starting control circuit
A starting control circuit is provided for use with a mechanical duty single phase alternating current motor having a start winding and a main or run winding. Both the main and start windings are...
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4651077 |
Start switch for a single phase AC motor
A start switch is provided for a single phase AC motor having a start winding and a start capacitor connected in series with the start winding and a main winding connected in parallel with the...
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4496895 |
Universal single phase motor starting control apparatus
A starting circuit for single phase electric motors including both split-phase and capacitor start motors includes a gate controlled solid state switch serially connected to the start winding of...
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4388580 |
Magnetic device for controlling starting of a single phase induction motor
A starter device for a single phase A.C. motor having a main winding and a starting winding disposed for connection to a single A.C. source. This starter device comprises a semiconductor switching...
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4307327 |
Control arrangement for single phase AC systems
This disclosure relates to control apparatus and particularly to a triggered switch connected in a first or controlled circuit and a trigger device connected in a second circuit. AC currents flow...
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3916274 |
Solid state motor starting control
An improved solid state motor starting switch is disclosed, which switch is adaptable to single-phase induction motors of the split-phase, capacitor-start, or capacitor-start capacitor-run type,...
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3740631 |
VOLTAGE COMPARATOR CONTROLLED MOTOR STARTING CIRCUIT
A speed responsive motor starting circuit includes a pair of bilateral triode switches connected to the motor start system for controlling the current flow therethrough. A capacitor is connected to...
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3728601 |
TRIGGER DIODE CONTROLLED MOTOR STARTING SYSTEM
A speed responsive motor starting system includes a bilateral triode switch connected in series with the motor start winding for controlling the current flow therethrough. A first bilateral trigger...
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3667017 |
STARTER DEVICE FOR SINGLE PHASE AC MOTORS
A starter device for a single phase A.C. motor having a main winding and a starting winding adapted for connection to a single phase A.C. source. The starter device includes a semi-conductor...
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3657620 |
SOLID STATE MOTOR START SWITCH
An electronic switch circuit for controlling the start operation of a single phase induction motor in accordance with the speed of the motor.
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3657621 |
SPEED RESPONSIVE MOTOR STARTING SYSTEM
A semiconductor switching circuit responsive to the speed of a single phase induction motor for controlling the starting operation thereof. A power bilateral semiconductor switching device is...
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3657619 |
STARTING CONTROLLER FOR ELECTRIC MOTOR
A starting controller is provided for electric motors of the split-phase type. This controller incorporates an electrical switching circuit utilizing a bi-directional, solid-state switching device...
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3644810 |
SENSING AND CONTROL DEVICE FOR ELECTRIC MOTOR-STARTING CIRCUITS
A versatile sensing transformer for actuating a semiconductor gate in the starting circuit of an electric motor, comprising a U-shaped magnetic base, inductive coupled primary and secondary...
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3573579 |
SINGLE-PHASE MOTOR CONTROLS USING UNITARY SIGNAL-CONTROLLED BI-DIRECTIONAL SEMICONDUCTOR GATE DEVICES
External control circuits for single-phase electric motors of the split-phase, capacitor-start inductance-run, and capacitor-start capacitor-run kinds in which the starting winding is connected to...
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3549970 |
SINGLE-PHASE MOTOR CONTROLS WITH COMBINATION OVERLOAD PROTECTOR AND STARTING SWITCH
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3538411 |
STARTING SWITCH CIRCUIT FOR SINGLE PHASE ELECTRIC MOTORS
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3508131 |
SCR ACTUATED SINGLE-PHASE MOTOR CONTROLS
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3376484 |
Semiconductor control circuit with moving iron core
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3226620 |
Starting arrangement
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3071717 |
Motor starating circuit
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