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9041324 AC motor control apparatus  
A control apparatus of an AC motor improves an electric current estimation accuracy of the AC motor. The control apparatus includes an electric current estimation unit that repeatedly performs an...
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,...
9041328 Controller for improving control and operation of AC motors  
An electrical controller for electric motors is provided. A control system for an electric motor comprises a supply for supplying excitation current to different windings of the motor at any given...
9024568 Motor speed controller and control method  
A motor speed controller controls a motor speed to generate a phase reference pulse; generates a FG pulse per rotary angle of the motor; detects a difference between the number of phase reference...
9024565 Anti-rebounding control apparatus and method in an electrical swing system of a hybrid excavator  
An anti-rebounding control apparatus is provided, which includes an anti-rebounding controller outputting a first command for setting a torque limit value to “0” if an electric motor speed value...
9018872 Motor control circuit  
To provide a motor control circuit that variably controls the speed of a motor, in which an appropriate advance angle value corresponding to the speed of the motor that is set can be automatically...
9007005 Inverter controlling system and method for reducing noise in eco-friendly vehicle  
Disclosed is a system and method of controlling an inverter to reduce noise in an eco-friendly vehicle. In the method, at least one of a current motor torque and a current motor speed is monitored...
8981702 Automated motor control  
Input-output linearization (IOL) and extended state observer (ESO) techniques are applied to a Field Oriented Control (FOC) for Permanent Magnet Synchronous Motors (PMSM). In one such approach, at...
8897930 Motor controller  
This application describes the software invented to control an electric motor system. The electric motor system is mounted on one or more aircraft main wheels or nose wheels to drive an aircraft...
8872454 Control unit of rotary device  
In a control unit that controls a control amount of a rotary device by controlling on and off states of switching elements of a power converting circuit, a relative rate predicting section...
8847526 Methods and systems for automatic rotation direction determination of electronically commutated motor  
A method for determining a direction of rotation for an electronically commutated motor (ECM) is described. The motor is configured to rotate a blower and the method comprises rotating the blower...
8847527 Control system for a rotary machine  
An estimation section calculates estimated currents corresponding to switching modes, which are provisionally set by a mode setting section. A mode determination section determines one of modes,...
8836256 Switched reluctance motor torque estimation  
A drive system has a switched reluctance motor (SR motor) and a control system configured to determine an estimated total torque of SR motor as a function of the phase voltages and phase currents...
8823302 Control apparatus for switching circuit  
A control apparatus for a switching circuit includes a controller, a target-rotational-speed acquiring device, a target-torque acquiring device, and an ON-time varying device. The controller is...
8803454 Sensorless optimum torque control for high efficiency ironless permanent magnet machine  
Embodiments of the present invention permit the optimization of torque control of a permanent magnet machine including obtaining instantaneous terminal voltages of the machine, transforming the...
8796964 Controllable direct current motor having a modified characteristic  
A direct-current motor is disclosed, preferably in the form of an EC motor, which has a matching arrangement in order to vary its rotation-speed/torque characteristic, having a permanently...
8786225 Inverter power generator  
An inverter power generator includes a current controller 14a setting a current limit ratio according to a rotation speed of a synchronous motor 13 and controls a converter current according to...
8779712 Motor control device  
A motor control device including: a following control unit that calculates a pre-correction torque command based on a difference between an operation command signal for commanding an operation of...
8773050 Brushless multiphase self-commutation controller  
The Brushless Multiphase Self-Commutation Controller or BMSCC is an adjustable speed drive for reliable, contact-less and stable self-commutation control of electric apparatus, including electric...
8773054 Hybrid electric vehicle system and method of controlling the same  
The present invention is directed to a method of estimating a motor rotation angle that does not affect precision of a detected angle of a crank angle sensor, which is an alternative sensor, when...
8773056 FPDA closed loop electric drives controls  
A control system for a switched reluctance (SR) machine is provided. The control system may include a converter circuit that is operatively coupled to the SR machine, and a controller in...
8767364 Vehicle steering system  
When a short-circuited FET is identified as one of low-side FETs, maximum phase voltages of three phases are detected when a steering operation is performed by a driver, and the detected maximum...
8744794 Method and apparatus for characterizing an interior permanent magnet machine  
One embodiment of the method includes setting up a testing architecture where the testing architecture includes a test IPM machine having an output shaft coupled to an output shaft of a secondary...
8742705 Apparatus for operating interior permanent magnet synchronous motor  
Provided is an apparatus for operating interior permanent magnet synchronous motor by receiving a first current command of a flux weakening control region I in a system including a detector...
8736208 Motor control device  
When one of six FETs has short-circuit faulted, a controllable region identification unit stops driving of an electric motor, and then performs processes for determining whether a short-circuit...
8723463 Motor control apparatus and method thereof  
A motor control apparatus includes a phase sensing circuit, a current sensing circuit, a controller and a driving circuit. The driving circuit receives a first driving signal and then controls a...
8723461 Apparatus for operating interior permanent magnet synchronous motor  
Provided is an apparatus for operating interior permanent magnet synchronous motor in a system including a detector measuring a position and a speed of a rotor of an IPMSM, the apparatus including...
8716967 Motor control device  
A motor control device for controlling a three-phase brushless motor that has a rotor and field coils includes: a load range determining unit that determines a rotor rotation angle range, in which...
8704469 Torque ripple suppression control apparatus and torque ripple suppression control method for rotating electrical machine  
A periodic disturbance observer determines real part I^An and imaginary part I^Bn of an estimated current including a periodic disturbance, from value of identification identifying a system...
8704474 Motor control method and system and digital signal processor thereof  
A digital signal processor (DSP) is operable to receive a single-phase back electromotive force signal (back-EMF) fed back from a motor and control an inverter for driving the motor based on the...
8680801 Rotating electrical machine system  
A rotating electrical machine system includes a stator that has stator windings of a plurality of phases, and that generates a stator magnetomotive force in accordance with stator current of...
8664902 Polyphase AC motor, driving device and driving method therefor  
Provided is an AC motor in a three-phase unbalanced state such as a claw-teeth type AC motor (108), which is reduced in magnetic flux pulsations and torque pulsations. Among the current command...
8659249 Method of controlling a motor  
Embodiments of the invention provide methods of controlling a motor, such as a servo motor. One method can include monitoring a current temperature of the motor and a power stage of the motor...
8624543 Switching strategy for switched reluctance machine  
A method of controlling a motor is provided. The method may determine a speed of the motor, and engage a soft chopping routine on a first switch and a second switch of each phase if the motor...
8618756 Systems and method for controlling electric motors  
A method for controlling a permanent magnet synchronous motor is disclosed. The method comprises receiving a feedback current from a motor; generating a digital current signal based on the...
8604729 Control of a permanent-magnet motor  
A method of controlling a permanent-magnet motor that includes sequentially exciting and freewheeling a winding of the motor. The method includes varying the angle over which the winding is...
8593091 DQ vector control system providing stable, high efficiency operation of electric motor  
A control system for a multiphase electric motor includes inputs for a desired torque output of the motor, a measured torque output of the motor, a signal representative of optimal motor...
8587237 Control device  
A control device configured with an external input estimator that reduces a vibration component of a rotational speed of the power transfer system at a rotational speed of the rotary electric...
8564229 Device and method for controlling motor  
A motor controlling device is provided that controls a brushless motor having a plurality of phases based on magnetic pole signals output by a plurality of magnetic pole signal output sections...
8552673 Interior permanent magnet machine systems and methods for controlling interior permanent magnet machines  
Example embodiments disclose an Interior Permanent Magnet (IPM) machine system including an IPM machine including a nominal operating direct current (dc) bus voltage, and a controller configured...
8547051 Controller and method for transitioning between control angles  
A system includes a control module that controls a motor based on a first rotor angle and an angle determination module that generates the first rotor angle. An estimator module determines an...
8547040 Control apparatus of electric vehicle  
A control apparatus of an electric vehicle, which is operable to be driven by supplying electric power from a battery to an electric motor to drive the electric motor and operable to perform...
8531141 System for calibrating an electrical control system  
A method calibrates a current sensing instant to latch a current value from a set of current signals. A current command including a magnitude at a Gamma angle is provided to control a motor when...
8519648 Temperature compensation for improved field weakening accuracy  
Methods and apparatus are provided for rotor and stator temperature compensation for field weakening current. The method comprises generating a phase voltage feed back signal Vph based in part on...
8497645 Control device for electric motor drive device  
A control device that controls an electric motor drive device is configured with a current control portion that determines a voltage command value, a voltage control portion that generates a...
8487561 Softstarter device and method to control the softstarting of an electric motor  
A self-adapting soft-starter device includes an electric current limiter limiting electric current supplied to the motor to a preset maximum current limit, a ramp-up time determiner determining...
8450962 System for controlling a motor  
A control system for a motor includes a current regulation controller for generating a terminal voltage command. The terminal voltage command is used for converting a supply voltage to a three...
8427088 Apparatus for carrying out improved control of rotary machine  
In an apparatus, a predicting unit uses, as an initial value of a controlled variable, at least one of a first measured value of the controlled variable and a second measured value of a physical...
8421386 Control apparatus for multi-phase rotary machine  
A control apparatus controls an inverter (electric power converter circuit) which is connected for selectively applying a plurality of voltage levels to each phase of a polyphase rotary machine....
8400087 Method and arrangement for determining rotation speed of a motor  
A method and an arrangement for determining the rotation speed of a motor fed by an inverter, the arrangement comprising means for determining the rotation speed of the motor in at least two...

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