Electricity: motive power systems inventions 03/09

20090079368 - Electronic direct current intermediate circuit: The invention relates to an electronic intermediate DC circuit which is to be used in brushless electric motors (1) such as reluctance motors and comprises a rectifier bridge (5) composed of diodes (4) and a capacitor that is connected downstream from the rectifier bridge (5). In order to improve the... Agent: Collard & Roe, P.C.

20090079369 - Electric powered vehicle: An electric powered vehicle according to the present invention comprises a battery, an electric power converting device, an electric motor, a drive wheel, a control part, an accelerator, a brake, and a rotation sensor. The control part detects the velocity using the rotation sensor. When a first velocity threshold is... Agent: Mots Law, PLLC

20090079370 - Ipm motor system and control method thereof: An IPM (Interior Permanent Magnet) motor system is provided with an IPM motor provided with a stator having slots and a rotor having poles, and a control unit which controls the rotor to the stator. An estimation precision of an initial angle position of the rotor to the stator is... Agent: Kanesaka Berner And Partners LLP

20090079371 - Motor controller and electric power steering apparatus: A signal generating section includes a second calculating section that corrects phase resistance. The calculating section stores resistance values of phases that have been measured in advance and a reference resistance value. The calculating section calculates correction components, which cancel a voltage drop term of a voltage equation of a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090079372 - Electric motor, drive system employing multiple electric motors, and method for controlling the same: The motor according to one aspect of the present invention has an output waveform correcting unit for correcting the waveform of the output signal of a magnetic sensor during operation of the electric motor. ID codes for identification purposes are assigned respectively to a plurality of magnetic sensors. The output... Agent: Harness, Dickey & Pierce, P.L.C

20090079373 - Motor controller and electric power steering system: A current sensor of a motor controller detects the current applied to a motor drive circuit and thus a phase where a failure cannot be detected would occur without taking any measures. However, an abnormal current monitor section contained in a microcomputer receives a voltage signal of an average value... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090079374 - Self starting method and an apparatus for sensorless commutation of brushless dc motors: A method and an apparatus for determining rotor position information of a Brushless DC motor using the resultant voltage vector produced by addition of phase voltage vectors of the energised windings and the BEMF vector of the unenergised winding. This resultant voltage vector called the BEMF Space Vector rotates at... Agent: Grossman, Tucker, Perreault & Pfleger, PLLC

20090079375 - Motor controller and electric power steering apparatus: A microcomputer 18 includes a current restriction value calculation section 31 and a current restriction section 32. The current restriction value calculation section 31 calculates a motor current value corresponding to a maximum power supply current value, which has been set in advance. The current restriction value calculation section 31... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090079376 - Delay-based access control apparatus and method: An access control mechanism such as a movable barrier operator (70) has a first time window unit (72) that is responsive to one or more triggers (71) (such as a delayed-closure button). An event detector (73) then monitors for one or more events of interest during a corresponding first time... Agent: Fitch Even Tabin And Flannery

20090079377 - Semiconductor integrated circuit device: In a semiconductor integrated circuit device of the invention, a plurality of external terminals include: a first external terminal (VCC, U, V and W terminals in the FIGURE) receiving a higher voltage than the other external terminals; and a second external terminal (FG terminal in the FIGURE) arranged adjacent to... Agent: Fish & Richardson P.C.

20090079378 - Safety enhanced control system for servo actuators: An electrical control system comprising a controllably conductive device, an input receiving circuit and a timer circuit. The controllably conductive device selectively applies power to an electrically operated servo. The input receiving circuit receives an input signal from an input switch for selection of the motion of the control surface... Agent: Robert C. Newman Jr.

20090079379 - Servomotor controller: The servomotor controller including: a bus voltage detector 4 for measuring a bus voltage, to output a bus voltage signal; a current detector 10 detecting means for detecting current passing through a servomotor 5, to output a current value signal; a controller 9 for switching, depending on the bus voltage... Agent: Sughrue Mion, PLLC

20090079380 - Motor controller having counter to count position error events and method of motor control using same: A motor control system uses an incremental encoder that provides a signal indicative of motor position. If an illegal state change is detected in the same sampling interval, an error event is recorded and an error counter is incremented. When the number of counts exceeds a pre-determined threshold, the motor... Agent: Rockwell Automation, Inc./bf

20090079381 - Electric brake circuit for holding an alternating current motor rotor stationary: An electric brake circuit for holding an alternating current motor rotor stationary uses a direct current brake acting on an AC motor rotor. The rotor has at least one groove formed therein positioned for alignment with at least one AC motor pole when switching from an alternating current to DC.... Agent: William M. Hobby, Iii

20090072768 - Use of an accelerometer to control vibrator performance: A mobile device includes a vibrator, an accelerometer that senses a parameter of rotation, and a processor. The vibrator includes a drive motor and a drive circuit. The accelerometer senses a speed of rotation of the vibrator. The processor analyzes the sensed speed of rotation and generates a drive voltage... Agent: Moore And Van Allen PLLC For Semc

20090072769 - Apparatus and method for controlling or regulating an oscillating deflectable micromechanical element: The invention relates to an apparatus and to a method for controlling or regulating the deflection of micromechanically manufactured deflectable elements which, driven electrostatically, are deflected in an oscillating manner. It is the object of the invention to provide a possibility with which a much larger deflection range can be... Agent: Gauthier & Connors, LLP

20090072770 - Power inverter module thermal management: According to an example embodiment, a method is provided for limiting an operational temperature of a motor. The method includes generating a maximum allowable current I*S(max) for a motor based on a temperature difference between a temperature reference T* of a power inverter module and a semiconductor device temperature T... Agent: General Motors Corporation Legal Staff

20090072771 - Magnetic motor generator having a floating flywheel: A magnetic motor generator that produces electric power by rotating a one piece magnetic floating flywheel assembly that is operated by a linear induction motor and repelled upward by a stationary natural magnet. The floating flywheel assembly magnetic axel rotates inside magnetic collar bearings, which have repelling stationary magnets to... Agent: Michael Marion Mcculley

20090072772 - Diesel-electric drive system having a synchronous generator with permanent magnet excitation: The invention relates to a diesel-electric drive system comprising a permanently excited synchronous generator (4), which is mechanically coupled to a diesel motor (2) on the rotor side and has an electrical connection to a voltage link converter (6) on the stator side, said converter having a respective self-commutated pulse-controlled... Agent: Henry M Feiereisen, LLC Henry M Feiereisen

20090072774 - Displacement sensing method and motor control apparatus: A displacement sensing method of the present invention includes the steps of superimposing a predetermined signal on a torque command to supply a drive torque to a motor, measuring an amplitude spectrum ratio between the drive torque in superimposing the predetermined signal on the torque command and a motor angle... Agent: Morgan & Finnegan, L.L.P.

20090072773 - Motor driving apparatus and method for control of motor revolution: This invention provides a motor driving apparatus that made it possible to reduce torque ripples including those attributed to load variation of the motor and an associated method for control of motor revolution. An output stage to a multiphase DC motor is comprised of power elements to supply output voltages... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20090072775 - Method and apparatus for quiet fan speed control: An AC motor speed controller includes a plurality of capacitors that may be selectively switched, by means of controllably conductive switches, into series electrical connection with an AC motor and an AC voltage source to control the speed of the motor. To change the speed of the motor, a control... Agent: Ostrolenk Faber Gerb & Soffen

20090072776 - Apparatus and method for controlling hybrid motor: The present invention relates to an apparatus and method for controlling a hybrid motor, and more particularly, to an apparatus and method for controlling a hybrid motor, which uses a permanent magnet instead of a field coil for a rotor, winds a coil round a stator in a multi-phase independent... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20090072777 - Field winding type of synchronous rotary electric machine: A speed-variable field winding type of synchronous rotary electric machine is provided, where a rotor with plural-phase windings faces a rotor with a field winding. A field current is limited to flow through the field winding in one direction thereof. A fundamental component of armature current, which corresponds a synchronizing... Agent: Nixon & Vanderhye, PC

20090072778 - Low speed synchronous motor drive operation: Methods and apparatus are provided for providing a torque boost in an electric motor system at low speeds. The electric motor system comprises an alternating current (AC) synchronous electric motor, an inverter and a controller. The inverter is coupled to the AC synchronous electric motor and provides electric control therefore.... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090066270 - Devices, systems, and/or methods for electrically coupling a high voltage electric motor: Certain exemplary embodiments can provide a terminal box adapted to be releasably and/or operatively attached to a selected electric motor of a plurality of electric motors. The terminal box can be adapted to receive a plurality of electrical wires. The plurality of electrical wires can be adapted to convey electrical... Agent: Siemens Corporation Intellectual Property Department

20090066271 - Method and system for converting dc power to ac power: Methods and systems for converting direct current (DC) power to alternating current (AC) power are provided. A first phase of the AC power is generated based on a first carrier signal. A second phase of the AC power is generated based on a second carrier signal.... Agent: General Motors Corporation Legal Staff

20090066272 - Electric safety braking device with permanent magnet motor and breaking torque control: This electric safety braking device for an electric traction vehicle may allow the force/speed characteristic of the vehicle to be improved and includes a rotating electromechanical machine with permanent magnets which has at least one coil with electric terminals, a rheostatic electric braking torque production device, and a commutation device... Agent: Davidson, Davidson & Kappel, LLC

20090066273 - Regenerative torque shifter: The regenerative torque shifter is a system for electric/hybrid electric vehicles that includes a driver-operated control device mounted in the vehicle and a control unit linked to a motor controller. The driver sets a level of regenerative braking desired by manipulating the control device. Based on output from the control... Agent: Litman Law Offices, Ltd.

20090066274 - Motor controller with hall sensor misalignment compensation: A technique can recover from motor stalls caused by misalignment of motor position sensors such as Hall-effect sensors. In a normal operating mode, a motor controller provides motor drive current to the motor windings based on the sensor signals according to a normal commutation sequence, and monitors for occurrence of... Agent: Bainwood Huang & Associates LLC

20090066275 - Brushless electric machine and apparatus using the same: A first member has a magnet assembly that includes at least one permanent magnet pair, and a second member includes an electromagnetic coil. A control circuit controls the supply of power to the electromagnetic coil as well as regeneration of power from the electromagnetic coil. The permanent magnet pair generates... Agent: Harness, Dickey & Pierce, P.L.C

20090066276 - Method for operating a rotating electrical machine: A method is specified for operating a rotating electrical machine, in which the rotating electrical machine is connected in terms of phase to a converter circuit, having a DC voltage circuit, for connecting at least two voltage levels, and the phases of the converter circuit are connected to the DC... Agent: Buchanan, Ingersoll & Rooney PC

20090066277 - Voltage conversion apparatus and vehicle including the same: Converters are connected in parallel to each other. The converter boosts a voltage from a power storage devices based on a signal from an ECU and outputs the boosted voltage to a capacitor. The converter boosts a voltage from a power storage device based on a signal from the ECU... Agent: Oliff & Berridge, PLC

20090066278 - Stepping motor drive and stepping motor driving method: In a drive of a stepping motor, an electromotive force is generated on the coil of a motor with a sinusoidal wave having the same period as an energization period by smoothly rotating a rotor with microstep driving, and an induced power is stably detected by detecting the electromotive force... Agent: Steptoe & Johnson LLP

20090066279 - Thin sensorless multiphase dc motor for rotating display unit: A thin sensorless multiphase DC motor for rotating display unit comprises a flat stator, a flat magnetized rotor, an axle, a power source and multiphase electronic controller. The flat stator located parallel to the flat magnetized rotor and comprises circumferentially arrayed coils with magnetic axes parallel to the axle. The... Agent: Industrial Design Laboratories, Inc

20090066280 - Motor drive circuit and cooling system using same: A motor driving circuit generates pulse driving signals, and controls the ON/OFF state of a switching circuit connected to a coil of a motor which is to be driven, thereby controlling the conduction period of the motor. A driving signal generating circuit generates the driving signals such that they are... Agent: Cantor Colburn, LLP

20090066281 - Method and apparatus for electric motor torque monitoring: Methods and apparatus are provided for monitoring an achieved motor torque produced by an electric motor. The method includes determining the achieved motor torque based on a rotor position of the electric motor and a phase current of the electric motor when the motor speed is not greater than a... Agent: General Motors Corporation Legal Staff

20090066282 - Serial backplane for medium voltage motor drive system: A hybrid backplane uses multiple, parallel serial communication channels to provide flexibility and robustness in a motor drive control requiring high-speed data communication for the real-time control of motor waveforms.... Agent: Rockwell Automation, Inc./bf

20090066284 - Laundry treatment machine and method of controlling the same: There are provided a laundry treatment machine and a method of controlling the same. A temperature around a motor is sensed and the range of current input to the motor in accordance with the sensed temperature is limited in stages. Therefore, the surrounding of the motor can be prevented from... Agent: Mckenna Long & Aldridge LLP

20090066283 - Method and system for limiting the operating temperature of an electric motor: A method and system for limiting the operating temperature of an electric motor is provided. A maximum operational temperature of the motor is determined. A current operational temperature within the motor is sensed. A maximum allowable power dissipation of the motor is calculated based at least in part on the... Agent: Ingrassia Fisher & Lorenz, P.C. (gm)

20090066285 - Front/rear wiper algorithm: A wiper system for a vehicle includes a first wiper assembly, a second wiper assembly spaced apart from the first wiper assembly, and a controller in communication with at least one of the first wiper assembly and the second wiper assembly. The controller controls at least one of the first... Agent: Daimlerchrysler Intellectual Capital Corporation Cims 483-02-19

20090066286 - Multi-phase ac motor driving device: A multi-phase AC motor driving device in which occurrence of failure is not erroneously determined is provided. In a multi-phase AC motor driving device including an inverter circuit; current detecting resistances Ru, Rv, and Rw, respectively arranged on lower arm of the respective phase of the inverter circuit, for detecting... Agent: Osha Liang L.L.P.

20090058326 - Hybrid vehicle and method of controlling the same: A hybrid automobile, wherein a second power source operated with less frequency can be forcibly operated. The hybrid automobile comprises a storage battery as a first power source. The hybrid automobile further comprises an engine and a motor generator or a fuel cell as the second power source. When the... Agent: Oliff & Berridge, PLC

20090058327 - Pumping driver for linear motor with constant battery power/current: A pumping driver for a linear motor, which includes a DC/DC converter that performs the function of constant power pumping or constant input current pumping of a battery to a linear motor.... Agent: Dekel Patent Ltd., David Klein

20090058328 - Motor driving circuit: A motor driving circuit for controlling a current amount flowing through a motor coil includes: a comparator configured to output a comparison signal indicating a comparison result between a set current amount and a current amount based on an inputted set current signal according to the set current amount and... Agent: SocalIPLaw Group LLP

20090058329 - Power supply system and vehicle: A maximum value selection unit (50) receives battery voltage values (Vb1, Vb2) and outputs the maximum value thereof to a lower limit value limiting unit (54). A maximum value selection unit (52) receives required voltage values (Vm1*, Vm2*) and outputs the maximum value thereof to the lower limit value limiting... Agent: Oliff & Berridge, PLC

20090058330 - Driving a multi-phased motor: Motor control circuitry reduces the amount of driving voltage profile data stored in a profile datastore to completely rotate the phased motor. The stored driving voltage profile data defines driving voltages samples applied during a limited portion of the electrical period required to completely rotate the phased motor. For example,... Agent: Hensley Kim & Holzer, LLC

20090058331 - Semiconductor power converter: A semiconductor power converter includes a power converter for converting direct current to three-phase alternating current or vice versa; a means for detecting a current in an alternating current side of the power converter; a means for providing a current reference in the alternating current side of the power converter;... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090058332 - Lock detection method and lock detection circuit for motor for power-folding mirror: The present invention is intended to, when rotation of a mirror rotation unit in a power-folding mirror is mechanically locked and its drive motor is thereby locked, make it possible to correctly detect this locked state. A motor 10 for a power-folding mirror is reversibly driven by an H-bridge drive... Agent: Greenblum & Bernstein, P.L.C

20090058333 - Elevating machine control apparatus: An elevating machine control apparatus controls an inverter (4) to drive an AC motor (5) connected to the inverter (4) with AC power, and energizes a power generation braking resistor (13) to apply a brake during regenerative operation of the AC motor (5). The apparatus prohibits the elevating machine from... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20090058335 - Control system for bearingless motor-generator: A control system for an electromagnetic rotary drive for bearingless motor-generators comprises a winding configuration comprising a plurality of individual pole pairs through which phase current flows, each phase current producing both a lateral force and a torque. A motor-generator comprises a stator, a rotor supported for movement relative to... Agent: Macmillan Sobanski & Todd, LLC

20090058334 - Current detector unit and motor control device: A current detector unit has a current detecting portion detecting a current flowing between a three-phase inverter and a direct-current power supply as a detection current; a three-phase current detecting portion for detecting a three-phase current of the inverter based on the detection current; and a judging portion judging, based... Agent: Ndq&m Watchstone LLP

20090058336 - Motor driving device: An object of the present invention is to provide a motor driving device capable of outputting an accurate rotation signal while preventing a false detection of B-EMF in a position detecting comparator. The motor driving device includes an output circuit, filter circuit, comparison circuit, current zero ampere detecting circuit, position... Agent: Mcdermott Will & Emery LLP

20090058337 - Control device and control method of boost converter: A control device of a boost converter which includes: an inverter circuit which controls switching to apply current to a stator winding of respective phases of a multi-phase brushless DC motor; and a boost circuit which is provided on an input side of the inverter circuit and has at least... Agent: Arent Fox LLP

20090058338 - Driving circuit for motor and device equipped with driving circuit: The circuit structured to drive a motor is provided. The circuit includes: a division signal generator that generates a division signal dividing each of a high level period and a low level period of a binary position signal representing a relative position of a magnetic coil to a permanent magnet... Agent: Harness, Dickey & Pierce, P.L.C

20090058339 - Electric motor drive apparatus, hybrid vehicle with the same and stop control method of electric power converting device: An ECU activates a shutdown permission signal and provides it to an AND gate when a shutdown signal is inactive. Thus, when an abnormality sensing device does not sense an abnormality, the ECU always keeps the shutdown permission signal active. The AND gate performs logical AND between a signal provided... Agent: Sughrue Mion, PLLC

20090058340 - Closure panel control apparatus: A controller computes a pinching amount of an object caused by a window glass. The controller estimates a prior pinching amount of the object caused by the window glass before the controller computes the pinching amount of the object. The controller confirms occurrence of the pinching of the object based... Agent: Posz Law Group, PLC

20090058341 - Control method and system with feedback indicative of load flux: Systems, methods, and devices are disclosed, including an induction-motor controller having a phase path; a solid-state switch interposed on the phase path; and a controller coupled to the solid-state switch. In certain embodiments, the controller is configured to switch the solid-state switch so that the solid-state switch is conductive during... Agent: Fletcher Yoder Law (for Rockwell Automation)

20090058342 - Robot controller having stoppage monitoring function: A robot controller having a stoppage monitoring function, by which safety of an operator is ensured without using hardware or the like for allowing/stopping the power transmission to each of a robot and a cooperating device. A CPU of the robot controller periodically monitors the position of the robot or... Agent: Drinker Biddle & Reath (dc)

20090058343 - Apparatus for operating a machine: An apparatus for operating a machine having electric axes includes a power module for supplying axis drives with electrical energy, an axis regulating module for regulating parameters of the axis drives, and an axis control module for controlling axis drives among one another. The modules are all interconnected with one... Agent: Michael J. Striker

20090058344 - Valve timing adjusting apparatus capable of reliably preventing heat damage of switching elements: A valve timing adjusting apparatus adjusts valve timing of at least one of intake and exhaust valves of an engine that are opened and closed by a camshaft driven by torque transmitted from a crankshaft. The apparatus includes an electric motor, a plurality of switching elements, a motor driver, and... Agent: Nixon & Vanderhye, PC

20090058345 - Motor controller providing position feedback correction: A motor controller employs absolute encoder signals to periodically assess the existence of cumulative error in a position signal derived from an incremental encoder signal. In one embodiment the absolute encoder signals are extracted from commutation switches of the motor eliminating the need for a separate absolute encoder.... Agent: Rockwell Automation, Inc./bf

20090058346 - Electric motor control apparatus: In order to simultaneously realize an improvement in disturbance suppression force of an electric motor control apparatus and vibration suppression of a load machine, a velocity control circuit receives a velocity command signal as a target value of velocity of an electric motor and a corrected velocity signal, obtained by... Agent: Leydig Voit & Mayer, Ltd

20090058347 - Motor drive system and method for predicting position during power interruption: A powered apparatus includes a driven component that is movable along a path and a drive motor that moves the driven component along the path. A motor speed detector monitors an instantaneous speed of the drive motor at each position along the path. An electronic control unit operates the drive... Agent: Emerson, Thomson & Bennett, LLC

20090058348 - Motor drive control device and image forming apparatus: A motor drive control device for controlling a rotational speed of a motor includes: a motor driver for rotationally driving a motor; a correction amount calculating section for detecting a rotational speed of an output of the motor in accordance with an alternate current signal outputted from an FG sensor... Agent: Casella & Hespos

20090058349 - Angle-calculation apparatus and angle-calculation method for three-phase optical encoder: An angle-calculation apparatus for three-phase optical encoder receives three-phase sinusoidal signals 120 degree phase from the optical encoder and obtains angle information for a motor rotor. The angle-calculation apparatus includes an A/D converter, a digital signal processor (DSP), a phase digitalizer and a digital counter. The A/D converter converts three-phase... Agent: Hdls Patent & Trademark Services

20090058350 - Junction temperature reduction for three phase inverters modules: Provided is a motor controller and method of controlling a motor with an improved maximum junction temperature rating. In accordance with one aspect of the present invention, a motor is controlled by varying a common mode voltage duty ratio for a plurality of solid state switching devices in a power... Agent: Fletcher Yoder Law (for Rockwell Automation)

20090058351 - Control method and system: Systems, methods, and devices are disclosed, including an induction-motor controller that has a motor controller configured to receive alternating current (AC) power with a voltage that varies generally sinusoidally and transmit the AC power during a conduction angle of a cycle of the AC power. In some embodiments, the conduction... Agent: Fletcher Yoder Law (for Rockwell Automation)