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9041335 Driver circuit and driving method  
A driver circuit for driving an electrical load includes an input terminal pole connecting the driver circuit to an AC voltage source, an output terminal pole connecting the driver circuit to the...
9041331 Motor controlling apparatus  
A motor controlling apparatus includes a first target torque value calculator, a frequency detector, a second target torque value calculator, a torque command value calculator, a torque limiter,...
9043090 Automatic steering apparatus  
An automatic steering apparatus that can suppress steering wheel vibration and that can also smooth angular control. In the automatic steering apparatus, a motor that steers steered wheels is...
9030146 Driving apparatus and motor  
A digital filter is configured to convert, into a digital value, the duty ratio of a control signal subjected to pulse width modulation according to a target toque to be set for a fan motor to be...
9030142 Circuit arrangement and method and device for operating the circuit arrangement  
A circuit arrangement for an electrical machine having a plurality of stator windings, with each stator winding including at least a first winding phase and a second winding phase. The circuit...
9024559 Variable speed drive  
A converter module for a variable speed drive having a semiconductor device for precharge is described. The precharge circuit includes switching modules, one switching module with a first...
9025336 Linked semiconductor module unit and electronic circuit-integrated motor device using same  
A linked semiconductor module unit links a plurality of semiconductor modules by a first bus bar and a second bus bar, which are embedded in resin parts. The linked semiconductor module unit is...
9024556 Control of electrical machines  
In an electrical machine which has time-varying or position-varying disturbances in its output, signals representing the position and values of machine-related parameters are used to solve a model...
9018870 Control device  
A control device for a rotating electrical machine, which is able to reduce a tracking delay of an actual output torque and actual currents with respect to a fluctuating torque command and...
9018883 Motor drive circuit  
A motor drive circuit operates in a first mode in which the output current flowing to a first output terminal from a second output terminal is increasing or in a second mode in which the output...
9018876 Electric power steering apparatus  
When a current sensor fails, instead of a normal-time motor control section, an abnormal-time motor control section drives and controls a motor. The abnormal-time motor control section detects a...
9013130 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...
9013133 Method and apparatus for stepper motor stall detection  
A method of detecting a stall condition in a stepper motor with very little movement of an instrument pointer coupled to the stepper motor. The stepper motor rotates the instrument pointer in a...
9013125 Electric power converter of electric rolling stock  
An electric power converter of an electric rolling stock includes: a converter unit (a first electric-power converting unit) that receives a direct-current voltage and outputs a direct-current...
9007007 Handheld machine tool  
A handheld machine tool has a drive motor and a supplementary handle which is mounted on the housing of the handheld machine tool and is assigned a drive-torque limitation device, the drive-torque...
8994319 Electric motor and electrical apparatus equipped with same  
An electric motor includes a magnet rotor which is placed with an air gap interposed between it and a stator and has a magnetic pole portion formed from a plastic magnet which swells by hydrogen...
8994307 Selectively lowering resistance of a constantly used portion of motor windings in an electric motor  
Dynamic reconfiguration-switching of motor windings in a motor is optimized between winding-configurations by selectively lowering resistance of a constantly used portion of one of the motor...
8988836 Power circuit, and computer-readable recording medium storing a control program for power circuits  
When an abnormality occurs in a refrigeration cycle, the inverter motor provided in the air conditioner is stopped reliably and contacts of the main relay are prevented from degradation and...
8988030 Power control for electrical applications over long cables  
This disclosure is drawn to methods, systems, devices and/or apparatus related to power control in applications over long cables. Specifically, the disclosed methods, systems, devices and/or...
8981697 Asset condition monitoring in an electric motor  
The motor monitoring system of the present disclosure uses several calculated monitoring values to determine a status of a motor and take a predetermined action when a threshold corresponding with...
8981703 Motor system having an electronically commutated electric machine  
A system for operating an electric machine includes: a rotor position sensor to provide a rotor position indication as a function of a rotor position angular range which indicates the position of...
8981696 Dynamic reconfiguration-switching of windings in an electric motor in an electric vehicle  
Dynamic reconfiguration-switching of motor windings in an electric motor in an electric vehicle is optimized between winding-configurations. Acceleration is traded off in favor of higher velocity...
8981686 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...
8981700 Vehicle seat apparatus  
Provided is a vehicle seat apparatus including drive mechanism for moving configuring elements of a vehicle seat using a motor drive, in order to adjust a posture; control mechanism for...
8981706 Electric motor drive apparatus and electric power steering apparatus having the same  
An electric motor drive apparatus includes multiple inverter sections arranged corresponding to winding sets of a motor, multiple relays that controls power supplies to the inverter sections, and...
8983730 Electric power steering apparatus  
An electric motor has a stator and a rotor that are used in common between two systems. An ECU controls the motor torque by supplying drive electric power to the motor coils independently of each...
8973452 Electric actuator  
In a body of an electric actuator, dust collecting pipes are disposed as a pair along an axial direction of a hole portion of the body. The dust collecting pipes are connected respectively to...
8970152 Elevator motor power supply control  
An exemplary power supply assembly includes a drive device having a bus capacitor. A switch associated with an input side of the drive device selectively connects the drive device to a power...
8965610 Pedal assist sensor  
Apparatus and method for controlling an electric motor providing assistance to a bicycle rider based on measuring the mechanical power generated by the rider. The power generated by the rider is...
8964338 System and method for compressor motor protection  
A system includes a refrigerant compressor including an electric motor, a current sensor that measures current flow to the electric motor, a switching device configured to close and open to allow...
8963460 Method and system for controlling motor  
A method for controlling a motor is provided. The method comprises obtaining electrical signals of the motor with a signal unit, the electrical signals comprising a motor torque and an angular...
8947031 Systems and method for speed and torque control of a DC motor  
A method for operating a direct current (DC) motor is shown and described. The method includes using pulse width modulated (PWM) DC output to control the speed of the DC motor. The method further...
8941338 Redundant braking system with constant braking torque and printing press having the braking system  
An electric braking device for printing material processing machines includes at least one electric drive to be braked that is supplied by a power converter in motor operation and is braked by the...
8928266 High efficiency electric motor drive system  
An electric drive system includes a motor output shaft rotating on a motor axis and a first electric motor. The system includes an epicyclical gear that includes a sun gear, a ring gear, a...
8922147 Quiet motor control system  
A quiet motor control system is described. This system digitally determines modulated voltages applied to motor phases in a manner that compensates for winding torque distortions, which reduces...
8917037 Electric operating machine  
The power circuit comprises a voltage conversion part converting an input voltage entered in accordance with a voltage of a power source to generate an output voltage and outputting the generated...
8912745 Method for operating a motor control unit for a drive system  
A method for operating a drive motor of a drive system, including the following: providing a control variable, which is ascertained as a function of one or multiple state variable(s) of the drive...
8907608 Predictive thermal protection for motors in barrier operator systems  
Disclosed are alternate embodiments of various components of a barrier operator system. and methods of operation, including of the mechanical drive subsystem with segmented and self-locking rail...
8901869 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,...
8901874 Electric power steering system  
An electric power steering system calculates a motor resistance Rm using a resistance map, and calculates an estimated inducted voltage based on a motor current and a motor voltage. If the...
8896248 Methods and systems for controlling a motor  
A control system for a motor includes an inverter coupled to the motor. The control system further includes a microcontroller coupled to the inverter. The microcontroller includes a processor...
8892280 Sprung mass damping control system of vehicle  
A sprung mass damping control system of a vehicle, which aims to suppress sprung mass vibration generated in a vehicle body of a vehicle provided with at least a motor-generator (first and second...
8892281 Torque control system for suppressing vibration in an electric vehicle  
A control system for an electric vehicle has a vehicle speed calculation section that calculates a speed of the electric vehicle and a control unit that controls an inverter of an electric motor...
8892296 Power state diagnosis method and apparatus  
[Problem] An object of the present invention is to provide a power state diagnosis method and a power state diagnosis apparatus that pass and increase not only a d-axis current but also a q-axis...
8890452 Control device for electrically driven door  
A control device for an electrically driven door is provided that can enhance the sensitivity of detection of a door pinch state and that can prevent a passenger from being pressed when the door...
8884557 Disconnection from mains using switches for power tools  
A method for operating a mains-operated electric motor for a power tool includes connecting a first side of an electric motor to a first mains and connecting a second side of the electric motor to...
8885315 Multi-actuator motion control system  
A multi-actuator motion control system includes a control methodology that coordinates the motion of multiple actuators while limiting the force-fight between the actuators. Control logic is...
8884576 Variable-flux motor drive system  
A variable-flux motor drive system including a permanent-magnet motor including a permanent magnet, an inverter to drive the permanent-magnet motor, and a magnetize device to pass a magnetizing...
8872450 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Electric operating machine
 
The power circuit comprises a voltage conversion part converting an input voltage entered in accordance with a voltage of a power source to generate an output voltage and outputting the generated...
8860349 Method and device for safety cutoff of an electromechanical steering system  
The invention relates to a method of safety cutoff of an electromechanical motor vehicle power steering, in which safety switches (26, 27, 28) are provided for electrical separation of a...