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| Number | Title | Issue Date |
| 8004231 | Control of a triac for the starting of a motor A method and a circuit for controlling a triac intended to be series-connected with a resistive element of positive temperature coefficient or a capacitive element, and a winding for starting an asynchronous motor, for supply by an A.C. voltage, the present inventio... | 08/23/2011 |
| 7692398 | Actuator for operating a roller blind and method of operating such an actuator The actuator (ACT) is intended to be linked to phase (AC-H) and neutral (AC-N) conductors. It comprises a motor (MOT) provided with windings (W1, W1), a capacitor (CM) disposed between two ends of the windings and the terminals of which form a first (P... | 04/06/2010 |
| 7514897 | Control of a triac for the starting of a motor A method and a circuit for controlling a triac intended to be series-connected with a resistive element of positive temperature coefficient or which is at least capacitive, and a winding for starting an asynchronous motor, for supply by an A.C. voltage, the present ... | 04/07/2009 |
| 7423405 | Electromagnetic rotating machine In order to obtain an electromagnetic rotating machine of lightweight and high energy efficiency, which produces big torque for rotating a large-diameter fan, a coil A and coil B as excitation coils are disposed on an inner peripheral surface of a fan casing so as t... | 09/09/2008 |
| 7405533 | Method and control circuit for controlling phase splitting start single-phase induction motor After a power source is turned on, the motor stars by feeding a current to the auxiliary wiring for a first predetermined period. Then, a voltage induced in the auxiliary wiring is detected. Whether or not the detected inducted voltage is lower than a predetermined ... | 07/29/2008 |
| 7299664 | Device for controlling motor in washing machine and method for controlling process of washing machine by using the same Device for controlling a motor in a washing machine and a method for controlling a process of a washing machine by using the same, the device including a motor, a power source part for supplying a voltage to the motor, a plurality of torque varying parts parallel to... | 11/27/2007 |
| 7271566 | Method and system for managing the voltage on the DC bus of a speed controller for an AC motor A method and system for managing the voltage of a DC bus of a speed controller for an AC electric motor linked to a current distribution network. The method includes comparing a value of the voltage measured on the DC bus with a determined limit value, when the valu... | 09/18/2007 |
| 7271565 | Apparatus for controlling speed of fan motor of air-conditioner An apparatus for controlling a speed of a fan motor (HIM (Hybrid Induction Motor)) of an air-conditioner extends a speed control range of a fan motor of an air-conditioner by controlling revolutions per minute (RPM) of the fan motor. In order to extend the speed con... | 09/18/2007 |
| 7248013 | Motor drive circuit A motor drive circuit is provided and includes: a PWM wave generation circuit for generating a PWM (pulse-width-modulated) wave having a high frequency, whose pulse width has been modulated, in response to a rotational frequency control signal used for driving a mot... | 07/24/2007 |
| 7248015 | Variable speed motor control circuit A control system and method for controlling the speed of a PSC motor having an auxiliary winding configured to provide torque for initial motor startup and a run winding configured to provide continuous motor operation. The motor is coupled to a capacitor configured... | 07/24/2007 |
| 7248008 | Shaded-pole A.C. motor with dynamic brake Am improved shaded pole A.C. motor with dynamic brake that includes a secondary high resistance winding that is selectively connected to a D.C. source when the A.C. voltage is removed. To stop a motor the A.C. voltage applied to the motor is removed with tandem swit... | 07/24/2007 |
| 7245105 | Single-phase induction motor and method for reducing noise in the same A single-phase induction motor and a method for reducing noise in the same, which can eliminate unbalance between magnetomotive forces of main and auxiliary windings in a stator of the motor, thereby implementing a low noise, low vibration motor, and can also achiev... | 07/17/2007 |
| 7196490 | Variable speed motor A variable speed motor includes first and second main windings wound on a stator, and a relay for performing a switching operation between serial/parallel connections of the first and second main windings to control motor speed. The variable speed motor further incl... | 03/27/2007 |
| 7168118 | Method for controlling spinning speed in drum-type washing machine Object of the present invention lies on improving a system stability by reducing an allowable eccentricity of laundry below a preset value when a spinning speed reaches to a maximum even if a voltage higher than a rated voltage is applied, by varying a maximum limit... | 01/30/2007 |
| 7095197 | Method and system for regulating instantaneous electromagnetic torque and storage medium for implementing the method A method is described of regulating the instantaneous electromagnetic torque of a polyphase rotating electrical machine equipped with stator and/or rotor windings supplied by a voltage and a current generated by an inverter formed of switches whose switching is cont... | 08/22/2006 |
| 7084590 | Booster and motor controller A voltage sensor (101) is connected to output terminals (P, N) of a booster. The voltage sensor (101) detects a boosted voltage, and outputs the detected voltage to a first drive controller (102). The first drive controller (102) outputs ... | 08/01/2006 |
| 7075255 | Variable speed controller for a family of multi-tap motors A system for variable speed motor control provides continuous variable speed motor controller for each motor or motor application within a family of multi-tap motors while using a single controller. The single controller utilizes a wave chop technique providing vari... | 07/11/2006 |
| 7071650 | Synchronous induction motor and electric hermetic compressor using the same A synchronous induction motor has a stator having a main winding and an auxiliary winding; a rotor having a yoke, a permanent magnet embedded in the yoke and a secondary conductor provided in the vicinity of periphery of the yoke; and a starter. The starter has a st... | 07/04/2006 |
| 7042192 | Switch assembly, electric machine having the switch assembly, and method of controlling the same A compressor having a winding circuit and a driven member being driven in part by a winding of the winding circuit. The compressor further includes an auxiliary circuit connected in a parallel relationship with the winding circuit. The auxiliary circuit has an auxil... | 05/09/2006 |
| 7034498 | Resonant motor system In a resonant motor system, an electrical motor having a stator with one or more windings, a rotor which may or may not be wound, and an air gap between the stator and the rotor for storing magnetic energy such that the motor exhibits a definite electrical inductanc... | 04/25/2006 |
| 7034499 | Electromagnetic motor An electromagnetic motor with increased torque. The motor has a rotor coil configured to generate a magnetic field. At least two stator coils are connected in series with the rotor coil. Each of the stator coils is configured to generate a respective magnetic field.... | 04/25/2006 |
| 7030583 | Method for the commutation of brushless direct current motor A method for the commutation of a brushless direct current motor having at least one motor winding in which the position of the rotor with respect to the stator is determined, a commutation signal is generated from the position, and the motor winding is energized by... | 04/18/2006 |
| 6933638 | Electric motor having a reverse air flow cooling system An electric motor having a reverse air flow cooling system that eliminates the need to extend lead wires past the fan. The electric motor includes a fan positioned on the lead-end of the motor to move air through a housing of the electric motor in a direction genera... | 08/23/2005 |
| 6906493 | Electronic brake for motor In an electronic system, motor braking is accomplished by applying direct current (DC) voltage, developed across a capacitive element during a run mode operation, across terminals of an alternating current (AC) or an induction motor. While the motor is ON, i.e. duri... | 06/14/2005 |
| 6859993 | Method of making single phase permanent split capacitor motor A permanent split capacitor electric motor is constructed by using existing components of a known shaded pole motor design to reduce engineering, tooling, inventory and other manufacturing costs of the new motor and, potentially, the known design through economics o... | 03/01/2005 |
| 6847186 | Resonant motor system In a resonant motor system, an electrical motor having a stator with one or more windings, a rotor which may or may not be wound, and an air gap between the stator and the rotor for storing magnetic energy such that the motor exhibits a definite electrical inductanc... | 01/25/2005 |
| 6788023 | Motor starter circuit, particularly for refrigerator compressors A starter circuit for motors, particularly for refrigerator compressors, comprising a starter device which is adapted to be connected to a starter winding and to a steady-state winding of an asynchronous motor, the windings being in turn connected to a power supply ... | 09/07/2004 |
| 6566841 | Scroll compressor having multiple motor performance characteristics A system includes a motor mounted within a housing and a compressor pump unit. A single-phase PSC motor includes a switch assembly which selectively connects primary or alternate windings. During normal load operation, when maximum efficiency is desired, ... | 05/20/2003 |
| 6445101 | Clutchless motor drive system A motor drive system includes an electric motor including a rotor shaft, a first main winding and a second main winding. The first and second main windings are selectively energizable to operate the motor at first and second speeds, and at least one of th... | 09/03/2002 |
| 6433505 | Phase shifting network A phase shifting network for an inductor motor is provided. The network includes a resistor connected in series with each motor phase coil of a pair of motor phases. The network further includes a capacitor connected between the motor phases. The inventiv... | 08/13/2002 |
| 6304046 | Driving control circuit of a hood motor A driving control circuit of a hood motor, including: a hood motor section rotatably driven for ventilating the inner portion of a system; a rectifier circuit section for supplying direct current power to the hood motor by rectifying alternating current p... | 10/16/2001 |
| 6175208 | High efficiency permanent split capacitor motor for driving a compressor A permanent split capacitor motor operable in a full mode and in a modulated mode for improving efficiency. The motor includes a stator and a rotor in rotational relationship with the stator. The motor also includes a single set of windings wound on the s... | 01/16/2001 |
| 6121749 | Variable-speed drive for single-phase motors A single-phase variable-frequency power supply with two output voltages drives a single-phase AC motor that has a start circuit and main winding. For permanent split-capacitor motors, the power supply maintains a constant voltage to the start winding whil... | 09/19/2000 |
| 5973473 | Motor control circuit A control circuit that activates and deactivates a motor start winding at different motor rpm trip points provides improved accuracy in the trip points by automatically compensating for changes in motor current caused by variations in line voltage and mot... | 10/26/1999 |
| 5867005 | AC motor winding circuit A winding circuit for use with different input signals includes a first main winding, a second main winding, and an auxiliary branch having an auxiliary winding permanently and serially connected to a capacitor. The windings and auxiliary branch are alter... | 02/02/1999 |
| 5808441 | Microprocessor based motor control system with phase difference detection The present invention involves a control system for a motor having a main winding and an auxiliary winding disposed on a stator. A microprocessor determines the phase difference between the line voltage and the voltage between the main winding and the aux... | 09/15/1998 |
| 5796234 | Variable speed motor apparatus and method for forming same from a split capacitor motor The present invention is directed to the design of a low cost variable speed single phase AC induction motor by eliminating the capacitor, and running the motor as a two phase motor.... | 08/18/1998 |
| 5650697 | Motor unit, motor drive unit, fan unit and method of controlling the motor drive unit The improved motor drive unit includes a zero-crossing voltage detector circuit composed of components (7) to (12) for detecting whether the voltage from an AC power supply (1) is zero-crossing and a switching circuit for performing on-off control by mean... | 07/22/1997 |
| 5404088 | Circuit for increasing motor output to compensate for increased load A circuit for boosting the power output of a motor in which a sensor stage, preferably a voltage divider, is coupled to comparator stage, preferably a reverse biased to a diode, which in turn is coupled to a power boost stage, preferably a relay and switc... | 04/04/1995 |
| 5280227 | Electronic control for an appliance An electronic control for a motor which eliminates the motor centrifugal switch and more particularly a control for a domestic refuse compactor which permits the user to control the approximate full trash bag weight and obtain more compaction from a split... | 01/18/1994 |
