Electricity: motive power systems inventions 02/07

20070040519 - Motor driving method and device thereof: The invention provides a motor driving device including a converter receiving and converting a non-electrical power source, such as light, heat, mechanical or chemical energy, to a first electrical power, and a selector electrically connected between the converter and a motor, for receiving the first electrical power and a second... Agent: Birch Stewart Kolasch & Birch

20070040520 - Circuit arrangement and method for controlling a brushless, permanently excited direct current motor: The invention relates to a circuit arrangement for self-commuting control of a brushless, permanently excited direct current motor. Said circuit arrangement determines the commutation interval by evaluating the induction signal of a signal phase. A capacitive interference suppression component is arranged between the signal phase and an adjacent motor phase... Agent: Siemens Schweiz Ag I-47, Intellectual Property

20070040521 - Stabilizer control device: A stabilizer control device includes a stabilizer having torsion bars and a brushless motor having an exciting coil, a rotating direction switching device switching a rotating direction of the brushless motor, an excitation control device for controlling power supplied to the exciting coil, a vehicle state detecting device, a rotating... Agent: Buchanan, Ingersoll & Rooney PC

20070040522 - Mechanical braking system for use on a vehicle having an electric propulsion system and automatic retard speed regulation: A mechanical braking system is provided for a vehicle having an electric propulsion system which is utilized for retard speed regulation. While the retard speed regulation is normally performed via electric braking, in some conditions the electric braking is not able to maintain a desired speed for the vehicle. In... Agent: Wenderoth, Lind & Ponack, L.L.P.

20070040523 - Method and apparatus for sensing brushless dc motor average current from overcurrent protection circuitry: A method and an apparatus that permit the measurement of the motor average current directly from the output of the amplifier and filter stage used for instantaneous dc-link overcurrent protection. As such, only one amplifier and filter stage is sufficient to provide both the motor average current and instantaneous dc-link... Agent: Ostrolenk Faber Gerb & Soffen

20070040524 - Power factor control for floating frame controller for sensorless control of synchronous machines: A system and method of controlling the power factor for providing either unity, leading or lagging results for the sensorless control of synchronous machines. The system and method provides an estimated angle of the phase current Park vector and uses a floating synchronous reference frame that is shifted from the... Agent: Honeywell International Inc.

20070040525 - Electric motor with integral regulator inductance: An apparatus and a method of manufacture of a DC electric motor operable over a range of voltage by virtue of a DC-DC regulator having an inductance provided by one or more windings on the stator of the motor. A conductor is wound about an interpole of the stator and... Agent: Bromberg & Sunstein LLP

20070040526 - Power crank window switch: A controller for a power window actuator including a crank-handle body configured to look like a traditional automobile window crank handle, and an electronic control unit that includes at least one electrical switch positioned such that movement of the crank-handle body actuates the switch, wherein the electronic control unit is... Agent: Foley And Lardner LLP Suite 500

20070040527 - Method for managing systems provided with redundant actuators: c

20070040528 - Position-sensorless motor control device: A position-sensorless motor control device has a superposer that superposes, on the drive current with which the motor is driven, a superposed current having a different frequency than the drive current, a superposed component extractor that extracts, from the motor current fed to the motor, the γ-axis and δ-axis components... Agent: Ndq&m Watchstone LLP

20070040530 - Image forming apparatus: An image forming apparatus includes a stepping motor that drives a rotor by rotating in accordance with an input of a drive pulse, a drive pulse profile storage portion that stores the drive pulse profiles corresponding to temporal changes of the drive pulse inputted in the stepping motor at starting,... Agent: Morgan Lewis & Bockius LLP

20070040529 - Stepping motor control system and method for controlling a stepping motor using closed and open loop controls: A stepping motor is driven in both closed-loop and open-loop modes while initiating microstepping after a predetermined threshold velocity has been reached. A feedback device such as an encoder is mounted on the stepping motor shaft and the encoder keeps track of the mechanical position of the rotor. Based on... Agent: Paul A. Guss Paul A. Guss Attorney At Law

20070040531 - Alternator rectifier: An automotive alternator rectifier including a terminal connection portion configured by connecting a terminal leading out of first unidirectional conducting element bodies disposed on a surface of a first heat sink so as to be spaced apart or a terminal leading out of second unidirectional conducting element bodies disposed on... Agent: Sughrue Mion, PLLC

20070040532 - Motor controller and control method thereof, and error detecting apparatus of inverter: A motor controller, including: a power supply which supplies DC power; an inverter which converts the DC power into AC power to be supplied to a motor; a shunt resistor which connects the power supply and the inverter; and a controller which supplies a control signal to the inverter to... Agent: Staas & Halsey LLP

20070035261 - Method for parallel control of series-cell based drives: A method for controlling at least two series-cell based drives connected in parallel. The method comprises detecting a failed cell in one of the drives, inhibiting operation of the drive with the failed cell, determining a peak output voltage capability of the drive with the failed cell, communicating the peak... Agent: Siemens Corporation Intellectual Property Department

20070035262 - Mesh connected brake array for electrical rotating machines: In the present invention, several polyphase devices are connected together: an inverter, and electrical rotating machine, and a resistive load or braking resistor. The purpose of the resistive load is to dissipate excess electrical power which may be produced when the inverter acts to slow down the rotating machine, causing... Agent: Borealis Technical Limited

20070035263 - System and method for parallel control of variable frequency drives: A method for controlling at least two variable frequency drives connected in parallel. The method comprises, for each variable frequency drive, communicating a magnetizing current component value to a master controller, and receiving a speed demand, a flux demand, and an average magnetizing current component value from the master controller.... Agent: Siemens Corporation Intellectual Property Department

20070035265 - Commutation technique for an ac-to-ac converter based on state machine control: A system for controlling a commutation of a load current is provided. The system comprises a AC-to-AC converter that includes a plurality of switching elements, an energy source that provides an oscillating voltage and is connected to the converter, an electrical load connected to the converter, and a controller that... Agent: Sonnenschein Nath & Rosenthal LLP

20070035264 - Control and monitoring arrangements for an aperture closure member: Current through a motor is sensed to create a voltage which is amplified. The amplifier is followed by a high pass filter and a low pass filter. This recovers commutator pulses from the motor current, rejecting mains ripple and higher frequency noise. Commutator pulses are counted. Other arrangements could be... Agent: Smith-hill And Bedell, P.C.

20070035266 - Movable body position control device and stage device using the movable body position control device: A movable body position control device includes a pair of position detectors configured to detect moving positions of both ends of a movable body; a pair of driving parts, the driving parts being configured to drive the both ends of the movable body based on a detection signal from the... Agent: Squire, Sanders & Dempsey L.L.P.

20070035267 - Stage device: This invention relates to a stage device which is moved with high accuracy in an X-Y direction and a rotating direction using a planar motor. The invention is aimed at reducing the size of the stage device and at performing accurately measurement of a position of the stage to the... Agent: Squire, Sanders & Dempsey L.L.P.

20070035268 - Emitting direction control apparatus for lamp: An emitting direction control apparatus for a lamp is provided with: a driver for deflecting an emitting direction for a lamp; and a controller that control the driver to perform a deflection. The controller includes an initialization function, for setting, at an initial position, a stepping motor that serves as... Agent: Fish & Richardson P.C.

20070035269 - Vector controller for permanent magnet synchronous motor: A vector controller for a permanent magnet synchronous motor according to the present invention has a motor constant identifying unit for identifying motor constants of the permanent magnet synchronous motor, which is connected to an electric power converter in the vector controller, by using a second d-axis current command value,... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070035270 - Rotary electric machine for vehicles: [Means for Resolution] Since an inverter unit 4 is cooled by cooling air forcibly formed by a cooling fan 28, the inverter unit 4 is efficiently cooled. Then, heat radiating fins 401a, 402a and 403a of heat sinks 401, 402 and 403 can be miniaturized, and consequently, the inverter unit... Agent: Sughrue Mion, PLLC

20070035271 - Method and apparatus for detecting multiple overcurrent thresholds using a single comparator device: A method and an apparatus that permit the detection of multiple overcurrent thresholds, providing system protection particularly but not exclusively in brushless DC motor drive systems, but using only one comparator device instead of multiple comparator devices. The disclosed embodiments predict a higher overcurrent condition based on the time it... Agent: Ostrolenk Faber Gerb & Soffen

20070035272 - Control device for electric compressor: A control device includes a shot-pulse control unit that provides, at a time of starting a synchronous motor, a predetermined current to each phase of a stator of the motor for a short time; a detecting unit that detects a current flowing through each phase when the predetermined current is... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070029953 - Control apparatus for electric motor of inverter system and control apparatus for electro mechanical brake: A relay switch for selectively connecting a power supply line of an inverter to a ground line is inserted between the inverter and a power source, and a power consumption unit such as a resistor element is inserted between the relay switch and ground line.... Agent: Crowell & Moring LLP Intellectual Property Group

20070029954 - Voltage converter control apparatus and method: By using a target voltage Vc* of a capacitor connected to the output side of a DC/DC converter and a voltage Vb of a battery connected to the input side of the DC/DC converter, a duty ratio D as a drive instruction of the DC/DC converter is calculated. By using... Agent: Kenyon & Kenyon LLP

20070029955 - Phase detection circuit, resolver/digital converter using the circuit, and control system using the converter: A small-sized and low-cost phase detection circuit which has improved noise immunity. The phase detection circuit comprises a multiplier for multiplying an input signal by a reference signal and outputting a first signal, an integration circuit for integrating the first signal and outputting a second signal, a phase estimation circuit... Agent: Crowell & Moring LLP Intellectual Property Group

20070029956 - Controller for a multi-phase brushless dc motor: Control of rotational speed of a direct current multi-phase brushless motor is provided using an apparatus and method that works at low speed but does not depend upon Hall effect sensors. An apparatus for accelerating rotation of the motor shaft has a power stage circuit coupled to a back Electromotive... Agent: Shook, Hardy & Bacon LLP Intellectual Property Department

20070029957 - Device and method for controlling an electric motor, especially in motor vehicles: In a device for controlling an electric motor, especially in motor vehicles, for setting a setting element, moved by the electric motor, as a function of the deviation of an actual setting from a nominal setting of the setting element, by means of a controller, which contains a microprocessor that... Agent: Crowell & Moring LLP Intellectual Property Group

20070029959 - Device for controlling electric-motor power steering device: Distortions of motor voltage and current and a torque ripple of the motor are generated by dead band compensation for preventing an arm short circuit of an inverter, and a feeling of physical disorder is given in a handle operation. Therefore, the distortions of the motor voltage and current and... Agent: Sughrue Mion, PLLC

20070029960 - Method for the control of an electric machine and/or device for the control thereof: The invention relates to a method for the control of an electric machine (5), wherein a control unit (1) comprises a parameterisable speed control (26) and a parameterisable additional control (28). The electric machine (5) is provided in order to modify the position of a displaceable machine part (7,8). The... Agent: Henry M Feiereisen, LLC

20070029958 - Speed regulator for a brushless dc motor: Speed regulator for a brushless DC motor, wherein the DC motor comprises a stator, a rotor and an electromagnet wherein the electromagnet is in the vicinity of the stator, the rotor produces a permanent magnetic field and the electromagnet is activated to generate an alternating magnetic field; furthermore comprising a... Agent: Sughrue Mion, PLLC

20070029961 - Washer controller and washer system for vehicle: A washer controller controls a washer motor in accordance with a manipulation of a washer switch. A washer switch detector determines whether a manipulation of the washer switch is performed within a predetermined time period of a last manipulation of the washer switch. A spray time controller sets a spray... Agent: Posz Law Group, PLC

20070029962 - Monitoring device and self-propelled cleaner: Disclosed is a monitoring device and a self-propelled cleaner including the monitoring device, that track a moving body securely and stably. Within the monitoring device 9, presence of the moving body is detected by a moving body detecting section according to image data imaged by an imaging device 52 as... Agent: Crowell & Moring LLP Intellectual Property Group

20070029963 - Ac motor control method and control device: It is possible to control a direct current intermediate voltage to be constant, without using a regenerative resistor and an apparatus for feeding back regenerative energy to a power supply, and thus to stably and continuously drive an alternating current motor even at the time of a power failure. A... Agent: Sughrue Mion, PLLC

20070024217 - Shunt regulation apparatus, systems, and methods: In some embodiments, an apparatus and a system, as well as a method and an article, may include receiving shunt current in one or more conductors according to a sensed component of power distributed by the conductors through one or more transformers coupled to the conductors and determined by an... Agent: Schwegman, Lundberg, Woessner & Kluth, P.A.

20070024218 - Motorized roller driven by driving motor with motor driving circuit, controller for said motorized roller, method for controlling said driving motor, conveyor incorporating said driving motor, and method for controlling said conveyor: A motorized roller incorporating a driving motor for driving the roller and accompanied with a motor driving circuit for driving the motor, including a lock detecting means adapted to detect a lock of at least one selected from the driving motor and the motorized roller and a power control means... Agent: Wood, Phillips, Katz, Clark & Mortimer

20070024219 - Motor drive device that combined charge controller: A voltage detector is connected to a connection terminal connected to one phase of an AC output of an inverter through a diode. A removable charge power supply is connected to said connection terminal and another connection terminal. A charge-power-supply connection judging circuit judges whether the charge power supply is... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070024220 - Magnetic gearing of permanent magnet brushless motors: A permanent magnet brushless 3-phase motor comprises windings R, Y, B, each divided into a plurality of sections 1-5 and switch means S1-S12 for selectively connecting the section of the respective winding e.g. R in series and/or parallel with all other sections of that winding R. Control means are provided... Agent: Gordon & Jacobson, P.C.

20070024222 - Electronic device and image forming apparatus: An electronic device includes a motor, a detector, and a controller. The detector detects a rotational speed of the motor. The controller selects a gain from a plurality of gains based on the rotational speed and controls rotation of the motor through feedback control. The controller uses a first gain... Agent: Banner & Witcoff, Ltd. Attorneys For Client Nos. 0166889, 006760

20070024221 - Motor control device and motor control method: A motor control device for controlling rotation of a motor by controlling a driving voltage applied to the motor is provided. The device includes a driving voltage control unit configured to control the driving voltage, and a detecting unit configured to detect rotation of the motor. The motor has operating... Agent: Sughrue Mion, PLLC

20070024223 - Start-up circuit for dc fan: A start-up circuit which decreases a start-up current and stabilizes running of a DC fan. The start-up circuit includes a digital-analog converter for convert a digital control signal from a control chip to an analog control signal, a comparator, a switching device for controlling start-up of the DC fan, and... Agent: Morris Manning Martin LLP

20070024224 - Kw-based torque control for ac motors: A kW-based torque controller for use with an AC induction motor has been developed that includes an AC-to-DC converter for receiving incoming three-phase power from a utility and converting the three-phase AC signal to a DC signal, a DC-AC inverter, coupled to the output of the AC-to-DC converter for transforming... Agent: Wendy W. Koba

20070024225 - Electronically commutated motor (ecm) and method of controlling an ecm: An electronically commutated motor comprises a rotor (208); a stator (201) electromagnetically interacting with the rotor (208), which stator is formed with a stator winding (202, 204, 206); a power stage (122) controlling the currents flowing in the stator winding (202, 204, 206) during operation; at least one current measuring... Agent: Ware Fressola Van Der Sluys & Adolphson, LLP

20070024226 - Method and apparatus for controlling at least one electric drive of a vehicle: A method for controlling at least one electric drive of a vehicle includes comparing a value of an electric variable to a threshold. The electric variable relates to an operation of the electric drive or is derived from the operation of the electric drive. The electric drive is stopped or... Agent: Carlson, Gaskey & Olds, P.C.

20070024227 - Actuating drive and emergency energy supply device: An actuating drive for a rotor blade in a wind power installation is provided with an electric motor and a frequency converter which has a rectifier that is to be fed from a power supply system, a link connected to the rectifier, and a d.c.-to-a.c. inverter for feeding the motor,... Agent: Kenyon & Kenyon LLP

20070024228 - Stepping motor drive apparatus and control method thereof: To provide a stepping motor drive apparatus for driving a stepping motor, that is a driving object, with low noise and low vibration. The stepping motor drive apparatus is composed of: a reference signal generation unit for generating a reference signal that shows a limit value of a current to... Agent: Greenblum & Bernstein, P.L.C

20070024229 - Control loop performance using a variable speed drive as the final control element: An AC electronic variable speed drive unit is used to power an AC induction motor that drives a centrifugal pump at controlled speeds for controlling the flow of a fluid process. The feedback loop controller function is implemented in the variable speed drive electronics, another network device, or may be... Agent: Richard H. Caro

20070024230 - Electrically powered hand tool: An electrically powered hand tool is described and which includes a three phase electrical motor having a plurality of poles; an electrical motor drive electrically coupled with the three phase electrical motor; and a source of electrical power which is converted to greater than about 208 volts three-phase and which... Agent: Alan D. Kirsch

20070024231 - System and method of controlling the start-up of an adjustable speed motor drive based sinusoidal output power conditioner: A motor drive for conditioning power to be delivered to a load includes a current feedback circuit that monitors current being fed to a transformer connected between the motor drive and the load. Based on the total current input to the transformer, a controller adjusts the V/Hz profile along which... Agent: Ziolkowski Patent Solutions Group, Sc (eaton)

20070024232 - Motor controller, washing machine, air conditioner and electric oil pump: A motor controller capable of suppressing a large speed change generated at the time of changeover from a synchronous operation mode to a position feedback operation mode and implementing even acceleration characteristics regardless of the load torque by estimating a torque of a permanent magnet motor in the synchronous operation... Agent: Antonelli, Terry, Stout & Kraus, LLP