Electricity: motive power systems patents - Monitor Patents
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Electricity: motive power systems

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
08/07/2014 > 24 patent applications in 14 patent subcategories.

20140217931 - Drive circuit and physical quantity measuring device: In order for keeping the amplitude of the excitation current of a vibrator constant irrespective not only of the temperature variation but also of the manufacturing variation and the variation in frequency, a comparison control circuit for controlling the amplitude of the drive signal for exciting the vibrator includes a... Agent: Seiko Epson Corporation

20140217929 - Stiction resistant mems device and method of operation: A MEMS device (20) includes a movable element (20) suspended above a substrate (22) by a spring member (34) having a spring constant (104). A spring softening voltage (58) is applied to electrodes (24, 26) facing the movable element (20) during a powered mode (100) to decrease the stiffness of... Agent:

20140217930 - System and method for efficient drive of capacitive actuators with voltage amplification: A circuit for driving a plurality of capacitive actuators, the circuit having a low-voltage side, a high voltage side and a flyback transformer between the two. The low-voltage side comprises first and second pairs of low-side switches connected in series across an input voltage. The flyback transformer has a primary... Agent:

20140217932 - Magnetostrictive actuator: A method of minimizing the cold start delay and impact fatigue of an actuator includes calibrating the actuator by initially raising the temperature to a desired operating temperature through induction heating of the actuator rod. Additionally, a control system for a magnetostrictive actuator includes a rod of magnetostrictive material, a... Agent: Great Plains Diesel Technologies, L.c.

20140217933 - Method and system for controlling motor: A method for controlling a motor to enable drive assist of an engine with a high torque in a low rotation speed range as well as synchronized driving in a high rotation speed range. The method includes controlling a motor connected to a low voltage battery. The motor has a... Agent: Samsung Sdi Co., Ltd.

20140217935 - Motor control device: A motor control device according to the invention includes: a mode setting section that sets one of a first mode in which a charge/discharge current of a secondary battery varies according to load fluctuation of a motor and a second mode in which the charge/discharge current of the secondary battery... Agent: Hitachi Automotive Systems, Ltd.

20140217934 - Motor-driven appliance and battery pack: A motor-driven appliance includes a battery; a motor including permanent magnets as field magnets; a momentary maximum current upper limit storage unit in which a predetermined momentary maximum current upper limit is stored; a current detection unit that detects a current flowing in the motor; a current threshold setting unit... Agent: Makita Corporation

20140217936 - Drive device and drive method for brushless motor: The invention relates to a drive device and a drive method for a brushless motor. In a drive method in which a switching timing of energization patterns is detected by comparing a pulse induced voltage of a non-energized phase with a voltage threshold, when the pulse induced voltage does not... Agent: Hitachi Automotive Systems, Ltd.

20140217937 - Single-phase brushless motor driver and method: A driving circuit for a single-phase-brushless motor and a method that includes a driving-signal-generating circuit configured to generate a driving signal for supplying, to a driving coil of the single-phase brushless motor, an output circuit coupled to the driving signal generating circuit; and an induced voltage zero-cross detecting circuit having... Agent: Semiconductor Components Industries, LLC

20140217938 - Motor controller with drive-signal conditioning: An embodiment of a motor controller includes a motor driver and a signal conditioner. The motor driver is operable to generate a motor-coil drive signal having a first component at a first frequency, and the signal conditioner is coupled to the motor driver and is operable to alter the first... Agent: Stmicroelectronics S.r.l.

20140217939 - Apparatus and method of decreasing speed of sensorless brush less direct current (bldc) motor: Disclosed herein is an apparatus of a sensorless brush less direct current (BLDC) motor capable of rapidly driving the BLDC motor at a decreased speed. The apparatus includes: a switching unit configured to switch a direct current (DC) power depending on a plurality of pulse width modulation (PWM) signals to... Agent:

20140217940 - Electrically operated power steering device: An electric power steering apparatus includes an EPS actuator that applies assist force to a steering system, and an ECU that controls operation of the EPS actuator. The ECU includes an inverter device, a gate driver circuit, a gate driver power source, a microcomputer, and the like. The microcomputer switches... Agent: Jtekt Corporation

20140217941 - Motor control system: A motor control system includes: a power supply; a converter; an inverter; an alternating-current motor; and a control unit that drives the motor in any one of sinusoidal PWM control, overmodulation control and rectangular wave control through operation control of the converter and the inverter. The control unit starts step-up... Agent: Toyota Jidosha Kabushiki Kaisha

20140217942 - Driving system for driving switching element: In a driving system, an applying module apples, in response to an input of an on or off command as a switching command, a switch signal to a target switching element as a high- or low-side switching element to switch the target switching element to be an on or off... Agent: Denso Corporation

20140217943 - Determining a position of a motor using an on-chip component: An embodiment of a motor controller includes first and second supply nodes, a motor-coil node, an isolator, a motor driver, and a motor position signal generator. The isolator is coupled between the first and second supply nodes, and the motor driver is coupled to the second supply node and to... Agent: Stmicroelectronics S.r.i.

20140217944 - Permanent magnet motor with sinusoidal back-emf waveform and related motor controller for position sensorless drives: A system includes a permanent magnet motor having a rotor and a stator. The rotor and the stator have a configuration that causes the motor to generate a back-electromagnetic force (EMF) waveform that is substantially sinusoidal. The system also includes a motor controller having a sliding-mode observer configured to identify... Agent: Texas Instruments Incorporated

20140217945 - Control techniques for motor driven systems utilizing back-emf measurement techniques: A method and apparatus for automatic resonance detection is disclosed for a motor-driven mechanical system such as a voice coil motor (VCM) in which a resonance detector and driver are provided. The automatic resonance detector may be implemented on the same integrated circuit as the driver, and dynamically determines the... Agent: Analog Devices Technology

20140217946 - Inverter device and motor drive system: An inverter device includes a power supply unit and a switch controller. The power supply unit supplies AC power to an AC motor whose electric characteristics in response to a rotation speed are switchable between low speed characteristics and high speed characteristics. The switch controller switches the electric characteristics of... Agent: Kabushiki Kaisha Yaskawa Denki

20140217950 - Constant voltage circuit and analog electronic clock: There are provided a constant voltage circuit that outputs a stable constant voltage for an analog electronic clock, and an analog electronic clock featuring low current consumption and prolonged battery life. The constant voltage circuit has a first voltage holding circuit connected between the gate of an output transistor and... Agent: Seiko Instruments Inc.

20140217948 - Method for controlling a multiphase machine: A method for controlling a multiphase machine which is connected to a direct current voltage source. The machine has a DC link which is provided with a DC link capacitor, phase windings, and a high side switch and a low side switch for each phase. The switches associated with the... Agent:

20140217949 - Method of pwm regulation of a continuous current electric motor: A method of PWM regulating a motor through a half-bridge drive stage includes sampling the motor current to obtain sampled values during driving intervals or during current decay intervals, and comparing a last sampled value with a current threshold. The motor is coupled in a slow decay electrical path for... Agent: Stmicroelectronics S.r.i.

20140217947 - Short circuit safe rectifier stage for a subsea power grid: Short circuit safe rectifier stage for a subsea power grid It is described a rectifier stage (251) for converting an input AC voltage to an output voltage, the rectifier stage comprising: a first AC input terminal (255); a second AC input terminal (257), wherein the input AC voltage is applicable... Agent:

20140217951 - Motor control device and motor control method: A motor control device includes a power converter, a velocity controller, and a certain-position stop controller. The power converter outputs a driving current on the basis of an input torque command. The velocity controller generates a calculated torque command on the basis of a difference between a velocity represented by... Agent: Kabushiki Kaisha Yaskawa Denki

20140217952 - Position control apparatus: A position control apparatus is configured to perform full-closed control for controlling the position of a driven member. The position control apparatus includes a vibration period and amplitude detector that detects a vibration period and a vibration amplitude included in a difference value between the position command value and the... Agent: Okuma Corporation

  
07/31/2014 > 24 patent applications in 14 patent subcategories.
  
07/24/2014 > 22 patent applications in 16 patent subcategories.

20140203739 - Aircraft comprising a distributed electric power unit with free wheels: The invention relates to a rotary- or fixed-wing aircraft comprising one or more rotors and/or one or more propellers, in which the rotor(s) and/or propeller(s) are rotated at a variable or constant speed by at least one shaft (Rp1, Rp2, Rp, RAC, H), and the aircraft includes a power unit... Agent:

20140203737 - Assisting converter: What is described is a battery management architecture that eliminates previously described problems of the previous solutions and compensates for the extra cost of a cell-balancing circuit. These advantages are achieved by integrating the voltage step-up and balancing functions as well as charging functions inside a single converter topology. Instead... Agent:

20140203736 - Battery management system and battery pack having the same: A battery management system and a battery pack having the same including a charging circuit path for charging a battery and a discharging circuit path for discharging the battery is disclosed. The battery pack also includes a controller configured to control a charge switch unit in the charging circuit path... Agent: Samsung Sdi Co., Ltd.

20140203735 - Electric storage system and control method of electric storage system: An electric storage system includes a charger which supplies power from an external power source to an electric storage apparatus and supplies power of the electric storage apparatus to an external device. A first and a second system main relay allow connection between a positive electrode terminal and a negative... Agent: Toyota Jidosha Kabushiki Kaisha

20140203738 - Vehicle including power storage unit: Deterioration of a power storage unit included in a vehicle is prevented or the power storage unit that has deteriorated is repaired, and the charge and discharge performance of the power storage unit is maximized to be maintained for a long time. Attention has focused on a reaction product formed... Agent: Semiconductor Energy Laboratory Co., Ltd.

20140203740 - Power conversion device: A power conversion device for driving a load, including a power conversion device main body configured to receive an input of a power supply voltage and to drive the load, and a brake circuit configured to protect the power conversion device main body from overvoltage applied thereto. The brake circuit... Agent: Fuji Electric Co., Ltd.

20140203741 - Heating element unit, control panel, robot system, and heat radiation method in heating element unit: A heating element unit according to an embodiment includes a heating element, a heat transfer base in which the heating element is provided, and a casing in which the heat transfer base is arranged. The heat transfer base includes a mounting wall on which the heating element is mounted in... Agent: Kabushiki Kaisha Yaskawa Denki

20140203742 - Motor driving device and vacuum pump: A motor driving device comprises an inverter, a first arithmetic section, a driving command generating section and a PWM signal generating section. The first arithmetic section calculates a rotational speed and a magnetic pole electrical angle of a motor rotor based on information about a motor phase voltage and information... Agent: Shimadzu Corporation

20140203743 - Drive apparatus and drive method for brushless motor: The present invention relates to a drive apparatus that drives a brushless motor with a square wave, and relates to a drive method thereof. The drive apparatus limits a duty cycle of once in N times of pulse width modulation periods so that the duty cycle does not fall below... Agent: Hitachi Automotive Systems, Ltd.

20140203744 - Machine having a converter controlled drive: A with a converter controlled drive includes a rotor, a drive having a variable rotational frequency a working machine and a frequency converter. The drive and the working machine are connected to one another such that a torque is transmitted. The frequency converter is electrically connected to the drive and... Agent: Siemens Aktiengesellschaft

20140203745 - Motor control circuit: In a motor control circuit, a switching element such as an FET for controlling a motor current and a current detection element for detecting the motor current are connected in series. One terminal of a temperature detection element is electrically connected to an electrical connecting section between the FET and... Agent:

20140203746 - Motor assembly comprising a brushless dc motor with control electronics: A motor assembly (101), comprising a brushless DC motor (102) with control electronics (103) which comprises at least two magnetic field sensors adapted to measure magnetic flux from magnetic poles on a rotor in the brushless DC motor (102). The magnetic field sensors are adapted to determine an angular position... Agent:

20140203747 - Motor control apparatus and method: A motor control apparatus and method are provided. The motor control apparatus may include a power supply device supplying power to a motor, a power control device selectively blocking current supplied to the motor depending on whether or not the current supplied from the power supply device to the motor... Agent:

20140203748 - Motor control device and motor control method: There is provided a motor control device for an actuator having a motor, including a measuring unit configured to measure a temperature of the actuator or a temperature corresponding to the temperature of the actuator, a determining unit configured to determine whether the temperature measured by the measuring unit is... Agent: Minebea Co., Ltd.

20140203749 - Motor controller having multi-functional pin and control method thereof: The present invention provides a motor controller having one or more multi-functional pins. The motor controller includes a plurality of pins but does not include a dedicated pin for transmitting a clock signal and a dedicated pin for transmitting a motor specification database setting signal, wherein the clock signal and... Agent: Richtek Technology Corporation

20140203750 - Secure motor starter: According to an embodiment of the invention, a motor starter includes a connection module, which includes a second and third interface, wherein the second interface is electrically conductively connected to the third interface. The security evaluation unit can be mechanically coupled to the connection module so that an electrically conductive... Agent: Siemens Aktiengesellschaft

20140203751 - Motor drive controller and method for operating the same: A motor driver controller including a difference control section; a driver output section; a drive current detection amplifier; and a load short-circuit detection circuit. A motor and sensing resistor is coupled in series and coupled to an output terminal of the driver output section. The difference control section generates a... Agent: Renesas Electronics Corporation

20140203752 - Positioning control system for actuator provided with wave gear device: A positioning control system for an actuator provided with a strain wave gearing is provided with: a semi-closed feedback controller FB(s) that controls a load shaft position θl on the basis of a feedback motor shaft position θm; and a feedforward linearization compensator configured by incorporating a nonlinear plant model... Agent: Harmonic Drive Systems Inc.

20140203753 - Method and drive apparatus for driving an electromagnetic actuator: A method of activating an electromagnetic actuator having at least one coil and a movable armature. The method includes the step in which the electromagnetic actuator is demagnetized by passing a sequence of electric current pulses with a current flow direction which alternates from one current pulse to the next... Agent: Zf Friedrichshafen Ag

20140203754 - Method of controlling an ac machine and controller for controlling an ac machine: A method of controlling an AC machine that includes a stator and a rotor. The method includes observing a stability parameter that is indicative of the stability of the AC machine and dependent on a current state of the AC machine; and controlling the AC machine based on the observed... Agent:

20140203756 - Inverter system and communication method: In an inverter system, a phase adjusting unit configured to adjust, according to reception timing of first data, a phase of second PWM carrier to match a phase of first PWM carrier. A master inverter further includes an amplitude adjusting unit configured to adjust, when second data is received by... Agent: Mitsubishi Electric Corporation

20140203755 - Methods and systems for controlling an electric motor: An electric motor controller is configured to be coupled to an electric motor. The controller includes an inverter and a control unit coupled to the inverter. The inverter is configured to receive an input voltage and to provide a conditioned output voltage to the electric motor. The control unit is... Agent: Regal Beloit America, Inc.

  
07/17/2014 > 14 patent applications in 11 patent subcategories.

20140197764 - Device for stable subsea electric power transmission to run subsea high speed dc motors or other subsea dc loads: Device for operative connection between a subsea step out cabie far end and subsea toads such as pumps, compressors and control systems, distinctive in that the device is a subsea DC provider (SDCP), and it comprises: a SDCP unit for altering alternating current power received from the step out cable... Agent: Aker Subsea As

20140197763 - Electrically adjustable antenna control system and method: An electrically adjustable antenna control system includes a controller, an actuation mechanism controlled by the controller, and a feedback loop connected to both of the controller and actuation mechanism. Herein, the controller includes a control board and its imbedded program. The actuation mechanism includes a DC geared motor controlled by... Agent: Comba Telecom System (china) Ltd.

20140197762 - Motor-driving device of an electric caulking gun: A motor-driving device of an electric caulking gun has a micro-controller unit (MCU), a direction-changing module, a motor and a speed sensor. The direction-changing module and the speed sensor are electrically connected to the MCU. The direction-changing module is electrically connected to the motor, and the speed sensor detects a... Agent: Techway Industrial Co., Ltd.

20140197765 - Methods and apparatuses for controlling output voltages of inverters driving of electric motors: A method of controlling an output voltage of an inverter driving an electric motor may include removing harmonic components of an output current, which is output to the electric motor, by using a low pass filter and obtaining a fundamental component of the output current; calculating a current total harmonic... Agent: Samsung Electronics Co., Ltd.

20140197766 - Electronically commutated electric motor comprising rotor position detection with interference field compensation: An electronically commutated electric motor includes a stator and a rotor formed as a permanent magnet. A control unit is connected to the stator and configured to energize the stator to produce a rotating magnetic field. The electric motor further includes at least one Hall sensor configured to detect at... Agent: Robert Bosch Gmbh

20140197767 - Surface motor direct-drive sucker-rod screw pump device: A surface motor direct-drive sucker-rod screw pump device is driven by a vertical three-phase permanent magnet brush-less DC motor, and comprises a motor controller (6), a rectifying circuit, an inversion circuit, a CPU and a driving circuit. The motor controller (6) is used to adjust the voltage and frequency of... Agent: Millennium Oilflow Systems & Technology Inc.

20140197768 - Hot standby power supply for a variable frequency drive: A hot standby power supply for a variable frequency drive of a floating vessel is provided. The variable frequency drive may power an electric motor of the floating vessel. The hot standby power supply includes a power input for receiving electric power from a main power supply of the floating... Agent:

20140197769 - Over temperature protection device for electric motors: An over temperature protection device for electric motors applicable to a railway vehicle driving system that operates a plurality of electric motors in parallel using one or a plurality of inverter devices includes a control device configured to control the operation of an inverter device and a protecting device configured... Agent: Mitsubishi Electric Corporation

20140197770 - Load characteristic estimating apparatus for driving machine: A load characteristic estimating apparatus for a driving machine includes an action-command generating unit for generating an action command for a position and speed of a driving machine, a driving-force-command generating unit for generating a driving force command to cause an action of the driving machine to follow the action... Agent: Mitsubishi Electric Corporation

20140197771 - Motor control apparatus and motor control method: A winding switching signal generator is configured to obtain information indicating a degree of field weakening from at least one of a current command calculator and a constant output controller, and to generate a winding switching signal for switching from a low speed rotation state to a high speed rotation... Agent: Kabushiki Kaisha Yaskawa Denki

20140197772 - Motor control device for switching pwm frequency to use the same: A motor control device includes an inverter, a power device temperature obtaining unit, a motor temperature obtaining unit, a power device temperature determination level storage unit, a motor temperature determination level storage unit, a PWM frequency storage unit that stores at least two PWM frequencies including a high PWM frequency... Agent: Fanuc Corporation

20140197773 - Motor control device for compensating backlash: A motor control device includes a position command generating unit, a difference calculating unit for calculating a difference between a positional detection value of a movable unit and a positional detection value of a driven unit, a retaining unit for retaining, as an engaging difference, the difference when the movable... Agent: Fanuc Corporation

20140197774 - Method and apparatus for controlling power converter with inverter output filter: Power converters and methods are presented for driving an AC load connected through an intervening filter circuit, in which at least one filter current or voltage signal or value is determined according to feedback signals or values representing an output parameter at an AC output of the power converter, and... Agent: Rockwell Automation Technologies, Inc.

20140197775 - Single phase motor energy economizer for regulating the use of electricity: A system for controlling power from an AC voltage to an induction motor to reduce surge when power is restored to a power grid is disclosed including, a device for switching power to the induction motor that has a trigger controllable to enable the device to provide a variable amount... Agent: Protective Energy Economizer Technology

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