|Electricity: motive power systems patents - Monitor Patents|
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Electricity: motive power systemsBelow 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. 02/27/2014 > 19 patent applications in 17 patent subcategories.
20140055059 - Motor driving device and electric power steering apparatus including motor driving device: In a motor driving device, a first relay portion is connected between a power source and an inverter portion, a second relay portion is connected between the first relay portion and the inverter portion, and a motor relay portion is connected between the inverter portion and a winding group of... Agent: Denso Corporation
20140055060 - Linearized control of piezoelectric actuator to reduce hysteresis: An exemplary piezoelectric actuator includes a piezoelectric transducer that exhibits displacements when energized with corresponding voltages. A control system is electrically connected to the piezoelectric transducer so as to provide the transducer with the voltages. The control system includes feedback of displacements of the transducer as functions of respective voltage... Agent: Nikon Corporation
20140055061 - Battery powered control device for driving a load with a pulse width modulated signal: A battery-powered load control device (e.g., a motorized window treatment) is able to supply a pulse-width modulated current to an electrical load (e.g., a motor) while conducting a substantially DC battery current from a battery powering the motorized window treatment. The motorized window treatment includes a motor drive circuit for... Agent: Lutron Electronics Co., Inc.
20140055062 - Switching apparatus for two-phase srm and control method thereof: Disclosed herein are a switching apparatus for a two-phase SRM and a control method thereof. The switching apparatus for a two-phase SRM includes: a rectifier rectifying commercial power; and a zero-voltage switching converter including a pair of upper and lower switches that is vertically connected to each of two phase... Agent: Samsung Electro-mechanics Co., Ltd.
20140055064 - Systems and methods for controlling motor speeds: Electronic circuits for controlling the speed of a motor include a receiving node coupled to receive a speed command signal representative of a desired final speed of the motor. A speed control circuit applies a selected amount of power to a motor to allow a speed of the motor to... Agent: Allegro Microsystems, Inc.
20140055065 - Pmsm field weaking for appliance motors: An electric motor in an appliance and a method of controlling the motor to achieve speeds greater than a base speed of the motor is provided. To achieve speeds above the base speed of the motor, field weakening can be implemented by applying a field weakening angle to a phase... Agent: General Electric Company
20140055063 - Electric motor and motor control: Various embodiments of an electric motor and electronic control for an electric motor are disclosed. An exemplary electric motor comprises a single-phase brushless permanent magnet electric motor. In exemplary embodiments, the electronic motor control is configured to commutate an electric motor at a frequency other than line frequency, perform pulse... Agent: Nidec Motor Corporation
20140055066 - Brushless motor control device and brushless motor control method: After a rotor of a three-phase brushless motor is previously moved by a simple control method to a predetermined rotary position, a motor is started-up. A brushless motor control device (10) moves a rotor (3) to a predetermined rotary position (stop position) before a three-phase brushless motor (1) is started-up.... Agent: Shindengen Electric Manufacturing Co., Ltd
20140055067 - Motor driving system: A motor driving system is disclosed having a control device 4A for controlling a synchronous motor 1, the control device 4A comprising a sensorless control algorithm device 20 that includes an abnormality determining device 25 for determining abnormality of the algorithm based on a magnetic pole position error estimated value... Agent:
20140055068 - Method, device, and computer program for determining an offset angle in an electric machine: The invention relates to a method and device for determining or checking the plausibility of an offset angle between an assumed orientation and an actual orientation of a rotor (20) relative to a stator (10) in an electric machine (1). In the method, the electric machine is first controlled in... Agent: Robert Bosch Gmbh
20140055069 - Electric excitation permanent magnet switch, electric excitation permanent magnet switch reluctance motor and electric excitation method: Two magnetic poles of a permanent magnet of a permanent magnet switch and the two ends of an iron core wound with an excitation coil are connected to each other with the soft magnet having a salient pole. A motor uses the switch as the basic component of the stator... Agent:
20140055070 - Shielding structure for power conversion system and method thereof: An electromagnetic shielding structure includes a first shielding material disposed at a first location with respect to at least one radiation source and a second shielding material attached with the first shielding material by fastening means. The second shielding material is disposed at a second location with respect to the... Agent: General Electric Company
20140055071 - Motor driving device, and motor control method: There is provided a motor driving device including: a speed detection unit detecting a speed of a motor; a comparison unit comparing the speed of the motor detected by the speed detection unit with an external input speed; and a speed control unit outputting the reference speed as a control... Agent: Samsung Electro-mechanics Co., Ltd.
20140055072 - Motor control device: A motor control device includes an H-bridge circuit for controlling on/off of a current fed to a motor, a drive circuit for driving the H-bridge circuit, a drive command signal generator for generating a drive command signal including a pulse signal having a predetermined drive frequency for sending a command... Agent: Kabushiki Kaisha Tokai Rika Denki Seisakusho
20140055073 - Dynamic pulse-width modulation motor control and medical device incorporating same: Apparatus are provided for motor control systems and related medical devices. In one embodiment, a control system includes a motor having a rotor, a sensor to obtain a measured displacement that is influenced by rotation of the rotor, and a control module coupled to the sensor. The control module adjusts... Agent: Medtronic Minimed, Inc.
20140055074 - Motor control device: A motor control device according to an embodiment includes a first subtractor, a speed controller, and a phase compensating speed observer. The first subtractor subtracts a speed reference from a speed feedback signal to obtain a speed deviation. The speed controller receives the speed deviation and outputs a first torque... Agent: Kabushiki Kaisha Yaskawa Denki
20140055075 - Motor having pulse mode and brushless mode, and control method and apparatus of the motor: A motor includes a rotor having a magnet, a stator having two coils, and a controller configured to control excitations of the two coils. The stator includes first and second yokes excited by the coils, and first and second rotor detectors configured to detect a magnetic flux. The first yoke... Agent: Canon Kabushiki Kaisha
20140055076 - Occlusion detection using pulse-width modulation and medical device incorporating same: Apparatus are provided for motor control systems and related medical devices. In one embodiment, a control system includes a motor having a rotor, a modulation module coupled to the motor, and a control module coupled to the modulation module. The modulation module generates a modulated voltage that is applied to... Agent: Medtronic Minimed, Inc.
20140055077 - Electric motor and motor controller: An electric motor controller having a front face and a rear face, the front face carrying a plurality of AC output couplings and the controller carrying a converter configured to convert a received DC supply into an output AC supply for controlling an electric motor, the AC output couplings being... Agent: Sevcon Limited02/20/2014 > 12 patent applications in 9 patent subcategories.
20140049194 - Drive arrangement: The invention relates to a drive arrangement for the motor-operated adjustment of an adjusting element in a motor vehicle, wherein the drive arrangement comprises two electrical drives having in each case a drive motor and a control device, wherein in the assembled state the drives act in the same manner... Agent: Brose Fahrzeugteile Gmbh & Co. Kg, Hallstadt
20140049195 - Circuit for activating an electric motor in a hand guided work apparatus: A circuit for activating an electric motor in a work apparatus includes a main circuit having an electric motor, a rechargeable-battery pack, and an operating switch for activating the motor, and also a parallel branch to the battery pack and the operating switch. A capacitor is arranged in the parallel... Agent: Andreas Stihl Ag & Co. Kg
20140049196 - Method and device for an electric motor drive: Method and device for an electric-motor drive, particularly in connection with electric vehicles, in which a system consisting of rechargeable batteries produces operating current for the electric motor/electric motors moving the vehicle. An essential part of the method and device is that one single-cell battery, or several single-cell batteries separated... Agent: Amotec Oy
20140049199 - Motor control device, motor control method, and image forming apparatus: A motor control device supplies a drive control signal to a drive circuit that drives a motor at a constant period using a motor drive signal based on the drive control signal, and shuts off the motor drive signal when a count value counted by a counter that reset the... Agent:
20140049198 - 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.
20140049200 - Control device and stepping motor control method: A motor control device includes a drive unit configured to rotate a rotor by supplying a drive signal with periodical changes to a coil; a detection unit configured to output a signal that is changed in association with a rotation of the rotor; and a control unit configured to control... Agent: Canon Kabushiki Kaisha
20140049201 - Motor control device: Proposed is a motor control device that executes rotational control that follows load fluctuations in a startup mode. The proposed motor control device is provided with: detection means 4 that detects a current peak value Ip and a current electrical angle θi based on phase currents Iu to Iw; detection... Agent:
20140049197 - Control apparatus for ac motor: A control apparatus for an AC motor that drives and controls the AC motor includes a damping control unit that calculates a damping manipulated variable that suppresses a fluctuation in the capacitor voltage, wherein the damping control unit calculates a fluctuation rate of the capacitor voltage, calculates the damping manipulated... Agent: Mitsubishi Electric Corporation
20140049202 - Motor control apparatus and motor control method: A motor control apparatus according to the embodiment includes a rotational position estimating unit, a change amount estimating unit, and an inductance estimating unit. The rotational position estimating unit estimates a rotational position of a rotor from a motor parameter including a q-axis inductance of a motor on a basis... Agent: Kabushiki Kaisha Yaskawa Denki
20140049203 - Motor control device: The present invention relates to a motor control device provided with the function of detecting the rotor position of a synchronous motor in a sensor-less fashion. The motor control device previously stores a current phase β defined by the two parameters that are an induced voltage peak value Ep and... Agent: Sanden Corporation
20140049204 - Electric working machine: An electric working machine including: an input part; a control unit configured to control a motor in accordance with an operation amount of the input part; and a switching part; wherein, when a predetermined operation is performed to the switching part, the control unit shifts to a fixed control mode... Agent: Hitachi Koki Co., Ltd.
20140049205 - Start capacitor assemblies and methods for operating electric motors: Start capacitor assemblies and methods for operating electric motors are described. In one example, a start capacitor assembly for connection to an electric motor includes a film capacitor and a resistor. The film capacitor has a first terminal and a second terminal. The resistor is coupled to the film capacitor... Agent: Rbc Manufacturing Corporation02/13/2014 > 21 patent applications in 19 patent subcategories.
20140042935 - Piezoelectric driving circuit and piezoelectric driving method: A piezoelectric driving circuit and a driving method thereof are provided. The piezoelectric driving circuit drives a piezoelectric circuit by using a first driving switch connected to one end of a piezoelectric circuit, a second driving switch corresponding to the first driving switch and connected to the other end of... Agent: Fairchild Korea Semiconductor Ltd.
20140042936 - Battery module, battery management system, system for supplying a drive of a machine suitable for generating torque with electrical energy, and a motor vehicle: A battery module includes lithium-ion battery cells and at least one discharge circuit configured to discharge the battery cells. The discharge circuit includes a control signal input, a switch, and a resistor and is configured to close the switch in reaction to a control signal at the control signal input,... Agent: Robert Bosch Gmbh
20140042937 - Method for charging an intermediate circuit capacitor: The disclosure relates to a method for charging an intermediate circuit capacitor in an electric drive unit comprising an electric motor. The intermediate circuit capacitor is charged by an intermediate circuit current that is supplied by a battery. The output voltage of the battery is settable to one or more... Agent: Robert Bosch Gmbh
20140042938 - Control device for electric motor and control method for electric motor: A control device 1 for an electric motor of the present invention includes: a current control unit 4 configured to calculate voltage command values vd*, vq* used to drive an electric motor 100, on the basis of a state quantity for voltage command value calculation and q and d-axis current... Agent: Nissan Motor Co., Ltd
20140042940 - Method and apparatus for control of electrical machines: A control system for an electronically commutated motor (401) can rotate smoothly to very low speeds without using a high resolution encoder and can respond to variations in load without excessive speed fluctuations. The control system can be applied to motors operating with low resolution encoders and motors operating with... Agent: Technelec Ltd
20140042941 - Matrix integrated sequential magnetic attraction electric machine: The invention discloses a reciprocal radial field electric machine based on the soft magnetic attraction principle, characterized by a plurality of active elements organized as a bi-dimensional cylindrical machine matrix and fed sequentially by an external power converter in order to derive a motoring or generation effect. The machine is... Agent:
20140042942 - Semiconductor device, electrical device and control signal, generation method: The present invention provides a semiconductor device, an electrical device, and a control signal generation method that enable easy generation of a given control signal even by a comparatively low cost and low processing power microcontroller. Namely, a microcontroller of a motor control system includes a PWM device equipped with... Agent: Lapis Semiconductor Co., Ltd.
20140042939 - Motor voltage conversion control device: A control device performs voltage conversion control on a voltage conversion circuit between a power supply and motor control circuits which control a plurality of motors. The control device includes sampling units for sampling a DC voltage after voltage conversion, target voltage setting units for setting target voltages VHT1 and... Agent:
20140042944 - Method or system for minimizing the impact of back emf sampling for motor resistance profiling: A method of determining when to utilise a back EMF sampling method for motor resistance profiling in at least one DC motor, the method including the steps of analysing a parameter prior to initialising the back EMF sampling method, and upon a determination that the analysed parameter is within a... Agent:
20140042943 - Sensorless field-oriented control (foc) without current sampling for motors: An apparatus includes a sensorless field-oriented control (FOC) motor controller. The motor controller includes a pulse width modulation (PWM) controller configured to generate PWM signals and to provide the PWM signals to an inverter. The motor controller also includes an angle sampler configured to receive a commanded voltage angle signal... Agent: Texas Instruments Incorporated
20140042945 - Method for the sensorless communication detection of electronically commutated electric motors: The invention relates to a method for the sensorless commutation detection of electronically commutated electric motors, in which the phase current is interrupted for a blanking time in order to detect the zero passage. On the basis of the profile of the mutual induction voltage, a decay time, which is... Agent: Robert Bosch Gmbh
20140042946 - Laundry appliance: A laundry appliance having a perforated rotatable drum for spin dehydrating a wet textile load, an electric motor for providing an accelerating force which in use causes the drum to rotate, load sensors for detecting any static dynamic imbalance in the rotation of the drum, and a controller which receives... Agent: Fisher & Paykel Appliances Limited
20140042947 - Control circuit for fan: A control circuit for a fan includes a fan controller, a switch controller, and a frequency detector. When a pulse-width modulation (PWM) signal output pin of the fan controller outputs PWM signals, the frequency detector outputs a high level signal, connecting an input pin of the switch controller to an... Agent: Hong Fu Jin Precision Industry (shenzhen) Co., Ltd
20140042948 - Motor drive control using pulse-width modulation pulse skipping: A control system for a motor includes a pulse-width modulation module, a pulse skip determination module, and a duty cycle adjustment module. The pulse-width modulation module generates three duty cycle values based on three voltage requests, respectively. A plurality of solid-state switches control three phases of the motor in response... Agent: Emerson Climate Technologies, Inc.
20140042949 - Rotation-speed-controlled fan with control of the power consumption of the electric motor: An electric fan has a drive motor having a fan rotor, an apparatus for generating a rotation speed signal (n_i), an apparatus for generating a power level signal (P_i) that represents power consumed; a first regulator (n_RGL) for regulating the rotation speed signal (n_i) to a predefined target value (n_s);... Agent:
20140042950 - Numerical controller with multicore processor: A numerical controller includes a multicore processor, an integrated peripheral control LSI, a motor control section and an amplifier interface section. The multicore processor has two cores. One is assigned as a numerical control section processor core, and the other is assigned as a programmable machine controller section processor core.... Agent: Fanuc Corporation
20140042951 - Method of controlling torque output of impact power tool and the control apparatus: An impact power tool includes a motor, a battery, a hammer mechanism and a control apparatus. The motor runs in the same speed no matter what torque level is selected. The motor runs for a total running time which is identical to an impacting time plus a compensative time. The... Agent: Mobiletron Electronics Co., Ltd.
20140042952 - Apparatus and method for preventing sensing error in srm: Disclosed herein are an apparatus and method for preventing a sensing error in a switched reluctance motor (SRM). The apparatus includes: a rectifying unit; a main controlling unit driven by power supplied from the rectifying unit, and operated in an error mode in the case in which the rotation speed... Agent: Samsung Electro-mechanics Co., Ltd.
20140042953 - Winding synchronous machine having a moving object including an inverter circuit, and method for controlling same: The present invention relates to a winding synchronous machine having a moving object including an inverter circuit, wherein a winding synchronous machine, including a winding synchronous motor or generator having a moving object including an inverter circuit, is provided, the winding synchronous machine being characterized by comprising: a moving-object inverter... Agent: Snu R&db Foundation
20140042954 - Apparatus and method for efficiently powering a one-phase motor: An apparatus and method for drastically increasing the efficiency of a single phase AC motor. A DC solid state driver is used to pulse a combination of the motor coil and a series capacitor. The coil/capacitor combination allows the motor to run near resonance (or a multiple of resonance). This... Agent:
20140042955 - Safety system and method for pump and motor: Embodiments of the invention provide a variable frequency drive system and a method of controlling a pump driven by a motor with the pump in fluid communication with a fluid system. The drive system and method can provide one or more of the following: a sleep mode, pipe break detection,... Agent:02/06/2014 > 19 patent applications in 18 patent subcategories.
20140035489 - Battery control and protective element validation method: A method, system and device for discharging power or validating protective elements of a power source to ensure proper functioning of a tool at various temperatures. The power source communicates with a switch using handshake signals to establish a scheme for power distribution depending on the temperature of the power... Agent:
20140035490 - Power factor correction drive circuit topologies and control for switched reluctance machines: Drive circuits that provide power factor correction and input current waveform shaping for controlling the speed and torque in a switched reluctance machine (SRM). The machine's phase windings are split into two segments, one of which is used for active power factor correction, input ac current waveform shaping and partial... Agent: Regal Beloit America, Inc.
20140035491 - Control apparatus of rotating device: In a control apparatus of a rotating device, a voltage command value setting section sets terminal command values on the basis of a command value of a control amount of the rotating device. Individual correcting sections calculate feedback operation amounts on the basis of history information of electric currents flowing... Agent: Denso Corporation
20140035493 - Motor drive device: A motor drive device inputs two detection signals from a rotation position sensor thereby to detect a rotation position, and controls a voltage to be applied to a motor according to the detected rotation position. The motor drive device has a control unit for outputting a first voltage in a... Agent: Hitachi Automotive Systems, Ltd.
20140035494 - Motor driving apparatus: There is provided a motor driving apparatus capable of optimizing driving efficiency by adjusting a phase difference between current applied to a motor and voltage detected from the motor and performing the adjustment of the phase difference when a pulse width modulation (PWM) signal has a set duty. The motor... Agent: Samsung Electro-mechanics Co., Ltd.
20140035495 - Methods and apparatuses for obtaining maximum magnetic flux of permanent magnet synchronous motors: A method of obtaining a maximum magnetic flux of a permanent magnet synchronous motor may comprise: receiving a first command voltage from a current controller to control current applied to the permanent magnet synchronous motor; receiving an on/off duty ratio of a control pulse signal to control an output voltage... Agent: Samsung Electronics Co., Ltd.
20140035496 - Motor control apparatus and motor control method: A motor control apparatus applying a sinusoidal drive waveform to a motor and including a position detection unit outputting a signal according to a motor shaft's position; and a control unit: acquiring a phase value of the motor's drive waveform when a signal is output by the position detection unit,... Agent: Canon Kabushiki Kaisha
20140035497 - Method and apparatus for reducing radiated emissions in switching power converters: A filter for reducing radiated emissions in switching power converters such as a motor drive is disclosed. The switching power converter modulates a DC voltage input to generate a desired AC voltage output. Capacitors are connected in parallel between each output phase and a common connection, which may be a... Agent:
20140035498 - Motor for a synchronous electric machine and method for routing power: A motor for a synchronous electric machine includes a first inverter configured to provide alternating current power at a first plurality of phases. Also included is a second inverter configured to provide alternating current power at a second plurality of phases. Further included is a first stator winding and a... Agent: General Electric Company
20140035499 - Driving apparatus having current detection function and motor driving apparatus having current detection function: There are provided a driving apparatus having a current detection function and a motor driving apparatus having a current detection function that are capable of detecting current without a voltage drop by using a dummy transistor connected to a driving transistor in parallel. The driving apparatus includes: a driving unit... Agent: Samsung Electro-mechanics Co., Ltd.
20140035492 - Single phase operation of a three-phase drive system: Single-phase voltage operation techniques are provided for a three-phase drive system. A drive system may include a rectifier configured to couple to a three-phase AC voltage source. The rectifier may be configured to convert AC voltage from the three-phase AC voltage source to a direct current (DC) voltage. The drive... Agent: Rockwell Automation Technologies, Inc.
20140035500 - Sensorless motor apparatus, back emf detector and detection method thereof: A back electromotive force (EMF) detector for a motor is disclosed. The back EMF detector includes an upper switch, a lower switch, a current sensing resistor and a first to third resistance providers. The upper and lower switches are controlled by a first and a second control signal respectively. The... Agent: System General Corp.
20140035501 - Brushless motor control device and brushless motor control method: Regarding a brushless motor control device and a control method, the phase voltage Vsu of any one phase of the three-phase brushless motor is detected by a sub-coil (Su) (6). A time interval between adjacent zero-cross points a1 and a2 thereof is measured. Based on the time interval between the... Agent: Shindengen Electric Manufacturing Co., Ltd.
20140035502 - Pmsm initial position detection system and method: A system for determining an initial position of a rotor (9) of a PMSM motor includes a motor controller (2) coupled to a plurality of phase windings of the motor by means of an actuation circuit (3). A processor (12) and an interface circuit (14) are coupled to the processor... Agent: Texas Instruments Incorporated
20140035503 - Three-phase motor driving apparatus and three-phase motor driving method: The three-phase motor driving apparatus according to an aspect of the present invention comprises a controlling part that estimates a rotational position of the three-phase brushless motor based on a reference pulse signal output by the rotor sensor according to a rotational position of the magnetic pole of the first... Agent: Shindengen Electric Manufacturing Co., Ltd.
20140035504 - Subsea measurement and monitoring: A method for monitoring at least one subsea electric machine supplied by a system for electric power transmission. The system has a power supply, a controller and an AC power line connecting the at least one machine with the power supply. The method includes the steps of: receiving at the... Agent:
20140035505 - Hybrid closed loop speed control using open look position for electrical machines controls: A method of controlling speed of an electric machine having a rotor and a stator is provided. The method may comprise the steps of monitoring a desired speed and a measured speed of the rotor, generating a torque command based on the desired speed and the measured speed, and controlling... Agent: Caterpillar, Inc.
20140035506 - Device and method for driving a door: To improve the energy efficiency of electrical drive systems for doors, the electric motor is actuated position-dependently, the electrically driven door is disconnected from the supply network in a resting position, a change of position of the door performed in the state of being disconnected from the grid is detected... Agent: Siemens Aktiengesellschaft
20140035507 - Motor deceleration method and motor driving apparatus applying the motor deceleration method: The present invention discloses a motor deceleration method which is applied to a motor driving apparatus. The motor driving apparatus includes an energy-storing unit and a controlling unit, and outputs a driving signal to control the motor. The controlling unit controls a driving frequency of the driving signal. The driving... Agent: Delta Electronics, Inc.Previous industry: Electric lamp and discharge devices: systems
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