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Electricity: motive power systems August inventions list 08/11

20110204829 - Broad turndown ratio traction drive: A traction drive system comprising a plurality of electric motors selectably connected to a main shaft by engagement devices, each motor or combination of motors provides distinct performance characteristics along a broad spectrum of performance characteristics; and a method of managing a traction drive system including sensing physical parameters of... Agent:

20110204830 - Vibration motor driving apparatus using a serial interface: A vibration motor driving apparatus using a serial interface comprises a serial interface part for receiving an effect command (effect digital data or effect generating command digital data) from a main processor upon occurrence of an event, a unit for generating a clock when the effect command is received from... Agent:

20110204831 - Drive device for alternating current motor and electric motor vehicle: Provided is a drive device for an alternating current motor which performs vector control on sensorless driving of the alternating current motor in an extremely low speed region without applying a harmonic voltage intentionally while maintaining an ideal PWM waveform. A current and a current change rate of the alternating... Agent: Hitachi, Ltd.

20110204833 - Controller for motor: A controller for use with a motor including a stator, around which three-phase coils are wound, and a rotor, which includes a magnet functioning as a first magnetic pole and a salient pole of a core functioning as a second magnetic pole. The controller supplies the three-phase coils with excitation... Agent: Asmo Co., Ltd

20110204834 - Motor driving circuit: A motor-driving circuit includes: a plurality of output transistors; a first-comparator circuit to compare a voltage of each phase of driving coils of a plurality of phases in a motor, with a neutral-point voltage; a position-detecting circuit to detect a rotor position of the motor based on a comparison result... Agent: On Semiconductor Trading, Ltd.

20110204835 - Switching circuit for series configuration of igbt transistors: A switching circuit includes two power transistors (22, 24) connected in series and a circuit (26, 28) for exciting each transistor suitable for simultaneously switching the two transistors. The circuit includes elements (30) for generating a corrective current (δi) for controlling a corrected-control transistor (22) among the two transistors (22,... Agent: Converteam Sas

20110204832 - Systems and methods for controlling operations of a motor: A method for controlling a motor is described. The method includes configuring a current sensor to sense a current supplied to the motor from at least one of a plurality of power lines and to generate at least one current signal indicative of the sensed current. The method also includes... Agent: Rbc Manufacturing Corporation

20110204836 - Shaft rotator for stored equipment with anti-friction bearings: Invention rotates the shaft of stored and/or stand-by rotating equipment to intervene in the false brinelling and/or lubricant separation process, thus eliminating and/or minimizing the subsequent premature bearing failure when the equipment is placed in service.... Agent:

20110204837 - System and method for controlling duty cycle of cpu fan: A fan duty cycle controlling system and method are implemented by a computing device. The fan duty cycle controlling system obtains an optimum duty cycle range of a fan around a central processing unit (CPU), and controls the fan to operate at the optimum duty cycle range. By implementing the... Agent: Hon Hai Precision Industry Co., Ltd.

20110204838 - Rotary drive device: A first angle-detecting unit outputs a first rotation angle according to the rotation angle of a rotation shaft of a servo motor. A second angle-detecting unit outputs a second rotation angle according to a rotation angle of a rotation shaft of a reduction gear. A torque calculation unit calculates the... Agent: Canon Kabushiki Kaisha

20110204839 - Motor drive apparatus and electric power steering apparatus using the same: A motor drive apparatus has a plurality of motor drive parts and a control unit. The control unit performs first and second failure detection processing for the motor drive parts before starting to drive the motor. If the first motor drive part is determined to have failure by the first... Agent: Denso Corporation

20110204840 - method of actuating a single-phase motor, a system for actuating a single-phase motor and a single phase motor: The present invention relates to a method of actuating a single-phase motor, a system for actuating a single-phase motor and a single-phase motor, especially applied to a system that enables one to actuate single-phase induction motors of the CSR (capacitive start and run) type, as well as single-phase induction motors... Agent:

20110199028 - Moving object, wireless power feeding system, and wireless power feeding method: An object is to provide a moving object structure capable of reducing power loss caused when power is supplied from a power feeding device to a moving object by wireless communication. Another object is to provide a moving object structure capable of reducing the intensity of radio waves radiated to... Agent: Semiconductor Energy Laboratory Co., Ltd.

20110199029 - Bi-direction driver ic and method for bi-directionally driving an object: The present invention discloses a bi-direction driver IC and a method for bi-directionally driving an object. The method comprises: providing a first and a second integrated circuit (IC) chips, coupled with an object to be driven, wherein each of the first and second IC chips is capable of single-directionally driving... Agent: Chip Goal Electronics Corporation, Roc

20110199030 - Motor control apparatus and electric power steering system using the same: A motor control apparatus has an inverter circuit, which includes FETs for converting electric power supplied to a motor. A capacitor is provided between a battery and the inverter circuit. A pull-up resistor connects a V-phase of the motor to a high potential side of the battery. A power supply... Agent: Denso Corporation

20110199031 - Motor controller for determining a position of a rotor of an ac motor, ac motor system, and method of determining a position of a rotor of an ac motor: A motor controller for determining a position of a rotor of an AC motor, the motor controller comprises a control input for receiving a control signal, an output for providing a power control signal for controlling power applied to a stator of the AC motor, and an input for receiving... Agent: Freescale Semiconductor,inc

20110199032 - Control apparatus for matrix converter: A control apparatus for a series-connected multi-level matrix converter includes each voltage commanding device provided for each of single-phase matrix converters to generate a voltage reference to each of the single-phase matrix converters. The series-connected multi-level matrix converter includes the single-phase matrix converters. Each of the single-phase matrix converters includes... Agent: Kabushiki Kaisha Yaskawa Denki

20110199033 - Partial regeneration in a multi-level power inverter: In one embodiment, the present invention includes a medium voltage drive system having multiple power cells each to couple between a transformer and a load. A first subset of the power cells are configured to provide power to the load and to perform partial regeneration from the load, and a... Agent:

20110199034 - Fan control system capable of modulating a rotational speed of a fan and method thereof: A fan control system includes a host device including a detecting unit for detecting a component so as to generate a detecting signal. The host device further includes BIOS for storing relationship information between the detecting signal and a rotational speed of a fan and for generating a rotational signal... Agent:

20110199035 - Motor control device: A motor control device, which receives at least two emergency stop signals, includes an LSI, a PWM signal transmission circuit, a drive circuit, and an inverter circuit. The LSI generates PWM signals. The PWM signal transmission circuit transmits the PWM signals. The drive circuit generates inverter drive signals. The inverter... Agent: Panasonic Corporation

20110199036 - Method and device for diagnosing a fan: Method for diagnosing a fan, in particular in a cooling circuit of an internal combustion engine, a current driving the fan being ascertained. The fan is triggered by a defined trigger signal, and depending on the ascertained current, a diagnosis of whether the fan is defective is performed.... Agent:

20110199037 - Power supply and control unit, particularly for submersed electric motors: A power supply and control unit for submersed electric motors includes an enclosure which is jointly connected to the motor of a submersed electric pump and forms a hermetic chamber that contains an electronic power supply that can be connected to the motor. The unit includes a heat exchange means... Agent: Sumoto S.r.l.

20110199038 - Drive unit for legged robots and control method thereof: A drive unit comprising of a driving motor and of at least two flexible linking members, which twist on each other when a rotational shaft of the driving motor rotates and thus produce a pulling force on a motion element that is attached to or is a part of link... Agent:

20110199039 - Fractional boost system: A fractional boost system including a boost converter, responsive to the base level voltage of a power supply, for providing a boost level voltage to a load and a control system for sensing the current to the boost converter and limiting the boost function of the boost converter when the... Agent:

20110193500 - Mechanism for converting rotary motion into linear motion and lifting device: There is provided a mechanism for converting rotary motion into linear motion in which high positioning accuracy can be obtained in mutual conversion between rotary motion and linear motion. The mechanism includes a plurality of rollers having a roller annular groove member and a pair of thrust bearings, a thrust... Agent: Hitachi, Ltd.

20110193501 - Electrostatic actuator apparatus and method of driving the same: According to one embodiment, a method of driving an electrostatic actuator includes a first electrode provided on a substrate, a second electrode arranged above the first electrode to be movable in a vertical direction, and an insulating film provided between the first electrode and the second electrode, includes boosting a... Agent: Kabushiki Kaisha Toshiba

20110193502 - Stable electro-mechanical actuators: An electro-mechanical actuator includes a comb drive and a deformable connector. The comb drive has a first capacitor plate and a second capacitor plate. The capacitor plates have teeth capable of inter-digitating. The deformable connector is configured to apply a mechanical restoring force to the first capacitor plate. The deformable... Agent:

20110193503 - Magnetically powered reciprocating engine and electromagnet control system: The instant invention provides a magnetically controlled reciprocating engine having a unique electromagnet control system. The engine is constructed and arranged to operate from a stored power source such as batteries to provide extended run times by controlling the power supplied to the electromagnets in a manner that controls heat... Agent:

20110193504 - Power converter control apparatus: Generation voltage control or generation torque control is performed as suitable control based on an external command or a load of a generator motor, to thereby prevent a rapid change of a generation torque or excessive power generation. A power converter control apparatus includes: a power conversion unit including a... Agent: Mitsubishi Electric Corporation

20110193505 - Control device for electric rotary machine: A control device controls a power conversion circuit so as to adjust control values of a motor generator to optimum values. The power conversion circuit has switching elements for selectively connecting and disconnecting a battery and terminals of the motor generator. The control device sets a simulated voltage vector V(n+1)... Agent: Denso Corporation

20110193506 - Motor driver and method of controlling the same: A controller controls switching of IGBT devices of an inverter according to the desired output of the permanent magnet motor. The controller includes: a magnet temperature detection device that detects the magnet temperature of the permanent magnet motor based on the output of a temperature sensor; a setting device that... Agent: Toyota Jidosha Kabushiki Kaisha

20110193507 - Method, controller, and power converter for controlling a single-switch based switched reluctance machine: A method for controlling a multi-phase motor includes withholding energization of a first phase of the motor for a non-zero period when the first phase's dwell time begins. Energization of the first phase is activated upon the expiration of the non-zero period. Energization of the first phase is deactivated for... Agent:

20110193508 - Vehicle display system and motor control device therefor: A step motor and a motor control unit are connected to a battery, so that electrical power is continuously supplied to the step motor and the motor control unit. The motor control unit continuously drives the step motor until a rotor of the step motor reaches at a next excitation... Agent: Denso Corporation

20110193509 - Power conversion device: A power conversion device includes a power switching circuit that supplies AC voltages generated between switching elements operating as upper arms and switching elements operating as lower arms, and a control circuit that generates and supplies to the driver circuit signals for controlling the switching operation of the switching elements... Agent: Hitachi, Ltd.

20110193510 - Positioning system and method: A system for positioning an object, having a fixed base, a support for the object, an actuator for applying a force to displace the support relative to the fixed base, a sensor for measuring the load force on the support, and a controller for processing the measured load force to... Agent: Newcastle Innovation Limited

20110193511 - Control circuit for single-phase ac motor of dryer: A control circuit for a single-phase AC motor of a dryer, including at least an electronic starting circuit including at least a starting control unit, a first drive circuit, and a bidirectional triode thyristor, a second drive circuit, and a mechanical switch K. The bidirectional triode thyristor is serially connected... Agent: Zhongshan Broad-ocean Motor Co., Ltd.

20110187295 - Electronic apparatus: An electronic apparatus includes a main body, a cover, a driving device, a receiving unit, and a processing unit. The cover is pivotably connected to the main body. The driving device drives the cover to rotate relative to the main body between an open position and a closed position. The... Agent: Hon Hai Precision Industry Co., Ltd.

20110187296 - Shape memory alloy actuator system: A shape memory alloy actuator system includes a shape memory alloy actuator which has a shape memory alloy wire, a mobile object which is movable, an elastic member, a first regulating member, and a second regulating member, a detecting section which detects a resistance value of the shape memory alloy... Agent: Olympus Corporation

20110187297 - Switching devices and related methods: A mechanical device capable of switching between two states is described. The device may include a micromechanical resonator with two distinct states in the hysteretic nonlinear regime. The devices can be used as a low-power, high-speed mechanical switch integrated on-chip with silicon circuitry.... Agent: Trustees Of Boston University

20110187298 - Fuel cell system and motor driving method: A motor can be driven while reducing the power loss of the entire system where a plurality of devices that causes power losses exists. The system is provided with an inverter connected to a motor, a first converter that is connected between a fuel cell and the inverter and sets... Agent: Toyota Jidosha Kabushiki Kaisha

20110187299 - Fan system and braking circuit thereof: A fan system comprising a motor, a motor driving circuit and a control unit is disclosed. The motor driving circuit is coupled to the motor. The control unit is coupled to the motor driving circuit, generates a forward rotation command for controlling the motor to rotate in a predetermined direction... Agent:

20110187302 - Semiconductor device: Multiple pads are provided to a semiconductor chip of a semiconductor device. A first pad is arranged on a path for a first signal set to a voltage that corresponds to a first level in the active state. The first signal is input to the semiconductor chip from outside the... Agent: Rohm Co., Ltd.

20110187301 - Dual source automotive propulsion system and method of operation: Automotive propulsion systems and methods of operation are provided. The automotive propulsion system includes a first voltage source, a power electronics device comprising a plurality of power switching devices coupled to the first voltage source, an electric motor having a plurality of windings coupled to the plurality of power switching... Agent: Gm Global Technology Operations, Inc.

20110187300 - Motor power factor correction apparatus and method: A power factor correction system includes a rectifier that rectifies the voltage of an alternating current (ac) power source to produce a voltage waveform that transitions, in a half sinusoid, from a minimum amplitude to a maximum amplitude and back to the minimum amplitude twice in the period of the... Agent:

20110187303 - Sensor-type brushless dc motor: Disclosed herein is a sensorless-type brushless DC motor, including: a magnet provided in a rotor; and a stator formed by winding a coil on a core stacked with sheets while facing the magnet, wherein the position of the rotor is detected by detecting back electromotive force induced to the coil,... Agent: Samsung Electro-mechanics Co., Ltd.

20110187304 - Motor phase winding fault detection method and apparatus: A method of detecting a phase winding fault in a multi-phase electric machine is executable via a motor controller, and includes measuring feedback signals of the machine, including each phase current, and generating reference phase voltages for each phase. The method includes calculating a predetermined voltage value using the feedback... Agent: Gm Global Technology Operations, Inc.

20110187305 - Servo control device and recording medium: A disclosed servo control device includes a servo control unit configured to control a driving unit for driving a driven body with servo control, and a changing unit configured to change a timing of ending the servo control in response to stop position accuracy for a target stop position of... Agent: Ricoh Company, Ltd.

20110187306 - Method for activating an asynchronous motor: The method for activating an asynchronous motor comprising at least two windings is provided, in order, for the purpose of a change in the rotational speed, to connect a first winding and at least one second winding by way of at least two electronic switches. On switching, both switches are... Agent: Grundfos Management A/s

20110187307 - Multi-speed induction motor: A multi-speed induction motor includes at least two stator windings (a low pole count winding and a high pole count winding) wound around a common stator core. A plurality of stator teeth extend radially inward from a stator yoke, thereby defining a plurality of slots open to its inner diameter.... Agent: Hamilton Sundstrand Corporation

20110187308 - Control device and control method for alternating-current motor: When instructed to switch control modes between overmodulation PWM control and sinusoidal wave PWM control, control device corrects the amplitude of a voltage command signal based on a state of power conversion operation performed by an inverter, so as to suppress a change in an influence of dead time over... Agent: Toyota Jidosha Kabushiki Kaisha