Class 318/778 - Starting control

Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter wherein the circuit provides means to supply
No. of applications: 40
Last issue date: 02/16/2012

Application No.	Application Title	Issue Date
20120038310	INRUSH CURRENT CONTROL FOR A MOTOR STARTER SYSTEM A motor starter system includes a plurality of switches, and a controller operatively connected to each of the plurality switches. The controller is configured and disposed to selectively activate select ones of the plurality of switches upon detecting a particular phas...	02/16/2012
20110316469	INPUT CIRCUIT FOR ALTERNATING CURRENT SIGNAL, AND MOTOR STARTER INCLUDING THE SAME An input circuit includes an interface structured to output a logic signal from an alternating current signal of a pair of elongated conductors. A load is switchable to the elongated conductors. A processor outputs a control signal to switch the load to the elongated co...	12/29/2011
20110285341	METHOD AND DEVICE FOR AN INDUCTION MOTOR START An object of the present invention is providing permissible values of start currents with sufficiently high start torque ensuring the possibility of the start of a loaded motor, the smoothness of the motor's start, without spikes and fluctuations of the currents, voltag...	11/24/2011
20110057601	CURRENT INJECTION CIRCUIT FOR DELAYING THE FULL OPERATION OF A POWER FACTOR CONTROL CIRCUIT FOR AC INDUCTION MOTORS An energy saver delay circuit for an induction motor is disclosed. The energy saver delay circuit includes a power factor control circuit including an integrator, the integrator having a negative summing junction and a current injection circuit electrically connected to...	03/10/2011
20110050154	ELECTRICAL SWITCHING APPARATUS INCLUDING A PLURALITY OF ROGOWSKI COILS AND METHOD OF CALIBRATING THE SAME An electrical switching apparatus includes a plurality of poles each having a Rogowski coil and a conductor passing through an opening thereof, and a processor circuit including a sensor circuit including a plurality of inputs each electrically interconnected with an ou...	03/03/2011
20110050155	Softstarter device and method to control the softstarting of an electric motor A self-adapting soft-starter device includes an electric current limiter limiting electric current supplied to the motor to a preset maximum current limit, a ramp-up time determiner determining the actual ramp-up time of the electric motor, a storing device storing a pr...	03/03/2011
20110006720	METHOD AND APPARATUS FOR AC MOTOR CONTROL An alternating current motor control system constituted of: a control unit; a current monitor in communication with the control unit, the current monitor arranged to provide an indication of the amount of current flowing through at least two windings of a target alterna...	01/13/2011
20110006722	SYSTEM AND METHOD FOR ENERGIZING AN ELECTRIC MOTOR AUXILIARY WINDING AND ELECTRIC MOTOR The present invention relates to a system and a method for energizing an auxiliary winding of a capacitor-start single-phase induction motor. Said system and method aim at reducing the voltage level in the bidirectional switches present in the topology during the blocki...	01/13/2011
20100270966	STARTING CIRCUIT FOR SINGLE-PHASE AC MOTOR A starting circuit for a single-phase AC motor, consisting at least of a rectifying and voltage-stabilizing circuit, a control circuit with a zero-cross detecting circuit and a counter, and a bidirectional thyristor. The bidirectional thyristor is serially connected to ...	10/28/2010
20100060227	MOTOR PROTECTION USING ACCURATE SLIP CALCULATIONS An accurate slip calculation for providing monitoring and protection to an electric motor. The slip calculation is made using a minimum value of stator resistance as the initial stator resistance, where the minimum value of stator resistance is the minimum value of stat...	03/11/2010
20100007304	DRIVE AND METHOD A drive and a method, including an electric motor, which is supplied by a rectifier, the rectifier including a time-discrete closed-loop control structure, which regulates the stator current of the electric motor by setting the voltage applied at the motor, the current ...	01/14/2010
20090261775	PERMANENT MAGNET MOTOR START-UP Methods and apparatus are provided for startup of a permanent magnet alternating current (AC) motor. The method comprises the steps of detecting startup of the permanent magnet AC motor; detecting a mechanical oscillation of the permanent magnet AC motor when startup of...	10/22/2009
20090218980	AC Motor Controller A system, method, and device for monitoring an AC induction motor are disclosed. The exemplary system provides the architecture of an intelligent motor controller. On one hand, the controller has self-commission and adaptive tuning capability and can provide smooth star...	09/03/2009
20090167233	Method of Manufacturing a Starting Device for a Three Phase Electric Motor, and a Starting Device When manufacturing a starting device for a three-phase electric motor, especially a soft starter, in at least one embodiment an arc quenching system is at least partly removed from a commercially available contactor that so becomes to a modified contactor. In at least o...	07/02/2009
20090121670	CONSTRUCTIVE ARRANGEMENT IN A SOFT-STARTER The present invention refers to a soft-starter having a new constructive arrangement comprising SCRs and a by-pass contactor connected through busbars that also provide an external connection to the soft-starter. The SCRs (10) and the contacts (30, 31) of ...	05/14/2009
20090067110	Switching Device and a System Comprising the Same A switching device comprising switching means for switching at least one current phase between responsive current phase input and responsive current phase output, the switching device being suitable for switching electrical current of a power circuit of an electric moto...	03/12/2009
20090021206	Motor soft start-up system A soft start-up system for a motor that minimizes formation of surge and effectively contains its impacts upon any other source voltage in the peripheral to further promote safe power consumption is mounted on a motor source circuit and includes a power resistance and a...	01/22/2009
20090015190	Device for the control of a smooth starting or ending of a three phase current motor, so-called soft starter An arrangement for the control of a soft starting or stopping of a three phase current motors (1), a so-called soft starter, is furnished for starting of heavy mechanical, electrical, or hydraulic drives. In order to obtain a space savings with individual or mult...	01/15/2009
20090015189	Motor starter A motor starter whose production is improved is specified. In at least one embodiment, the motor starter includes a power semiconductor switch, an electromechanical bypass switch connected in parallel therewith, and control electronics to drive the bypass switch. In at ...	01/15/2009
20080218117	Method for turning a three-phase current motor on again and electrical circuit for implementing the method A method for turning a three-phase alternating current motor on again, after it has been separated from a supply voltage, if a residual field voltage induced by a rotor residual field is present, and to an electrical circuit for implementing the method. The time progres...	09/11/2008
20080174262	Method of powering a single-phase electric motor and a power supply system for implementing such a method The present invention relates to a method of powering a single-phase asynchronous electric motor, comprising first and second windings, in which method one of the windings is powered by AC mains while the other winding is powered by an inverter that receives a rectified...	07/24/2008
20080174261	Power capacitors for AC motors mounted diametrically on associated transmissions Power capacitors for AC motors are mounted diametrically on associated transmissions. The power capacitors are in one embodiment annular and in another embodiment, arcuate. By having power capacitors mounted on transmission housings diametrically, cooling of the power c...	07/24/2008
20080150471	Motor Starting and Switching A method of starting and apparatus for starting a multiphase electrical machine is disclosed. The aim is to reduce oscillatory pulsation in torque generated by the motor and inrush current that occurs shortly after start-up. The starting method comprises the steps of fi...	06/26/2008
20080054840	Solid state reversing AC motor starter with DC power source A solid state reversing AC motor starter that employs a DC power source and a power bridge employing insulated gate bipolar transistors that provide an ungrounded three phase AC output. The AC output is connected to the power input of the motor starter, which requires s...	03/06/2008
20080054831	Current limiting DC motor starter circuit A current limiting DC motor starter employing a closed loop current measurement to provide precise current control that adapts to changing motor conditions, integrated with a solid state reversing motor starter. The motor starter further includes a calibrated overcurren...	03/06/2008
20080042613	Motor control unit A motor control unit includes a power converter unit that energize a motor based on a commutating signal, the motor having a rotor provided with a permanent magnet and a stator having a coil wound thereto; a start-up controller that outputs a commutating signal to the p...	02/21/2008
20070278985	System And Method For Starting A Wound Rotor Motor A system and method for starting and regulating a wound rotor motor (320) including a phase-controlled SCR converter (350) and a drive circuit (330, 340) having a voltage source inverter (340) and a voltage source converter (330). The SCR con...	12/06/2007
20070257632	Apparatus and Method for Reducing the Current Drawn During Starting of a Single-Phase AC Asynchronous Motors Current consumption during the starting process of a single-phase a.c. asynchronous motor is reduced by an apparatus including a thermistor which can be mounted in series with the main winding of the motor. A starting capacitor can be mounted in series with an auxiliary...	11/08/2007
20070188125	Inverted electric motor and method for using such to propel a vehicle An alternating current, multiphase, squirrel cage induction electric motor in a unique inverted design, including a method of applying the motor with controls, operator interface, batteries, and peripheral devices to propel a non-polluting electric vehicle. ...	08/16/2007
20070164700	Starting system for a single-phase induction motor A starting system for a single-phase induction motor, comprising: a stator having a running coil (11) and a starting coil (12); a power source (F) which supplies current to said running coil (11) and said starting coil (12); a running switch ...	07/19/2007
20060267540	PUMP DRIVEN BY DUAL WOUND VARIABLE FREQUENCY INDUCTION MOTOR An electrically operated pump assembly operable on a variable frequency power source includes a pump having an input shaft, and a variable frequency motor operatively coupled to the input shaft. The variable frequency motor includes a first winding having a first number...	11/30/2006
20060132072	Method of operation of a home-automation installation The method of operation is applied to an installation comprising an actuator supplied with an AC electric voltage and intended to drive a movable element equipping a building, in a first direction when the AC electric voltage is applied between a neutral conductor and a...	06/22/2006
20060119308	Device and method for reducing the current consumption during the starting process of a single-phase a.c. asynchronous motor The invention relates to a device (1) for reducing the current consumption during the starting process of a single-phase a.c. asynchronous motor (M). Said device consists of a thermistor which can be mounted in series with the main winding of the motor. Advantage...	06/08/2006
20060113950	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 control...	06/01/2006
20060097688	Start-up and restart of interior permanent magnet machines A method of starting a permanent magnet machine. A machine stator voltage in a stationary reference frame is sensed. An initial speed of a rotor of the machine is estimated based on the sensed voltage, and state variables of control algorithms are initialized based on t...	05/11/2006
20060087278	Methods for managing electrical power Certain exemplary embodiments comprise a system comprising a plurality of Active Front End units adapted to be electrically coupled to a direct current (DC) bus. Each of the plurality of Active Front End units can be adapted to be electrically coupled to a separate wind...	04/27/2006
20050253545	Method of starting an electronically commutated motor An electronically commutated motor (ECM) often employs a Hall sensor for reliable operation. Even when a Hall sensor is omitted from a motor structure, one can assure reliable startup, in a preferred rotation direction, if the motor (20) is designed with an auxil...	11/17/2005
20050168188	Starter for a line start electric motor The invention concerns a starter for a line start electric motor having at least one main winding (4) and at least one start winding (12) and which start winding is connected in series with a run capacitor (14) with which a start capacitor (17	08/04/2005
20050156556	VARIABLE SPEED CONTROL STALL DETECTION AND RESPONSE SYSTEM A variable frequency drive for an AC induction motor includes a stall sensing system coupled with a voltage frequency response system. Upon sensing a rise in the current which suggests a stall, and before triggering a motor shutdown, the VFD is caused to increase the V/...	07/21/2005
20050083009	Method and arrangement in connection with slip-ring machine An arrangement and a method for starting a slip-ring machine, the arrangement comprising a frequency converter arranged to be connected between a supply network and a rotor of the slip-ring machine for controlling the slip-ring machine, and starting means for starting t...	04/21/2005

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Class 318/778 - Starting control