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Match Document Document Title
US20090302787 Induction and switched reluctance motor  
This application describes a motor designed to operate as a reluctance machine at low speeds and as an induction machine at high speeds. The drive waveform is composed of one or more harmonics to...
US20090079368 Electronic Direct Current Intermediate Circuit  
The invention relates to an electronic intermediate DC circuit which is to be used in brushless electric motors (1) such as reluctance motors and comprises a rectifier bridge (5) composed of...
US20090021192 Switched Reluctance Machine And Method Of Operation Thereof  
The present invention provides an S SRM (switched reluctance machine), which supports one or more phases and each phase comprises a stator, a rotor and coils. The stator is hollow, cylindrical and...
US20150236633 CONTROL METHOD FOR REDUCING TORQUE RIPPLE IN SWITCHED RELUCTANCE MOTORS  
A method of controlling torque ripple in a switched reluctance motor (SRM) includes splitting each phase winding of the SRM into an AC winding and a DC winding. The AC winding of each phase...
US20090001911 Conduction angle control of a switched reluctance generator  
A control system is disclosed. The control system has a switched reluctance generator coupled to provide electrical power through a DC bus to a motor. The control system also has a controller in...
US20140035490 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...
US20140184112 METHOD AND APPARATUS OF CONTROLLING DRIVING OF TWO-PHASE SWITCHED RELUCTANCE MOTOR  
Disclosed herein are a method and apparatus of controlling driving of a two-phase switched reluctance motor (SRM). The apparatus includes: a target speed arrival judging unit judging whether or...
US20140265950 SWITCHED RELUCTANCE MOTOR  
A switched reluctance motor (SRM) is disclosed which has a rotor position detecting system with magnetic switches to detect the rotor position and give signals to a logic circuit to trigger...
US20150162863 EXTENDED-SPEED LOW-RIPPLE TORQUE CONTROL OF SWITCHED RELUCTANCE MOTOR DRIVES  
Various embodiments are described herein for an extended-speed low-ripple torque control of a switched reluctance motor (SRM) using online torque sharing function (TSF). Two operational modes of...
US20080048594 METHOD FOR MANAGING TRANSITIONS IN A THREE-PHASE BLDC MOTOR AND CORRESPONDING DEVICE  
A method is provided for managing at least one transition in a three-phase BLDC motor describing a cycle including six successive states, wherein the motor obtains first, second and third...
US20070296286 Powered Hand Tool  
The invention relates to a hand tool for use with attachments. The hand tools of the invention may be used with attachments with various speed and torque requirements. Preferred hand tools...
US20080231216 Method for control of a reluctance motor  
The invention relates to a method for control of a reluctance motor which has a rotor (1) and a stator (4), the rotor (1) having a plurality of rotor segments (3) and the stator (4) having a...
US20140239857 CONTROL APPARATUS FOR A SWITCHED RELUCTANCE MOTOR  
An apparatus for controlling a switched reluctance motor with use of a power conversion circuit. In the apparatus, a command voltage setter sets a command voltage for a coil of the motor, where...
US20140354196 MOTOR CONTROLLER  
A motor controller configured to control an SRM includes an inverter connected to an SRM, a torque and flux estimator configured to estimate a torque and a flux generated in the SRM as an...
US20150102751 MOTOR ACCELERATION APPARATUS AND METHOD  
Embodiments of the invention provide a motor acceleration apparatus and a motor acceleration method. According to at least one embodiment, the motor acceleration apparatus includes a rectifier...
US20140340006 Position Sensorless Step-Wise Freewheeling Control Method for Switched Reluctance Motor  
A position sensorless step-wise freewheeling control method for a switched reluctance motor having dual switched-mode power converters for each phase doesn't require any additional external...
US20080197793 Control of an electrical machine  
A switched reluctance machine has salient poles on the stator and rotor. The windings of the machine are supplied from a converter which provides energisation at a chosen rate. The windings of the...
US20150200617 D-Q Control System and Method for Controlling a Switched Reluctance Motor  
A D-Q or rotating reference frame control system for a switched reluctance motor (SRM) provides a negativity removal module and a non-linear model module. As such, the control system utilizes...
US20130181641 UNIPOLAR SWITCHING APPARATUS OF SWITCHED RELUCTANCE MOTOR  
Disclosed herein is a unipolar switching apparatus of a switched reluctance motor, including: a control unit outputting a unipolar switching control signal; and a transformer driving an SRM...
US20150002055 SINGLE BUS STAR CONNECTED RELUCTANCE DRIVE AND METHOD  
A system and methods for operating a switched reluctance machine includes a controller, an inverter connected to the controller and to the switched reluctance machine, a hysteresis control...
US20080072619 Control device of motor for refrigerant compressor  
The present invention provides, in case of driving to control a motor for a refrigerant compressor by a sensorless system, a driving device that reduces vibrations and noises at starting, and...
US20150171672 ELECTRIC MOTOR WITH PLURAL STATOR COMPONENTS  
An electric motor apparatus comprising: a rotor; and a stator formed of at least two stator components, each of the at least two stator components having a substantially hollow cylindrical form....
US20140055062 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...
US20170187315 CONTROL DEVICE FOR SWITCHED RELUCTANCE MOTOR  
A control device for a switched reluctance motor includes: a switching controller configured to execute switching control to switch drive control of the switched reluctance motor between a first...
US20170159810 CONTROLLER OF OIL PRESSURE CONTROL SYSTEM FOR AUTOMATIC TRANSMISSION  
A controller of an oil pressure control system for an automatic transmission, the system including: a manual valve having a sleeve and a spool and changing an oil passage to the automatic...
US20170149368 MOTOR DRIVER AND A METHOD OF OPERATING THEREOF  
Apparatus is provided comprising an electrical motor comprising a rotor and a stator, the rotor comprising a plurality of rotor teeth and the stator comprising a plurality of stator teeth. The...
US20170133967 METHOD FOR RELIABLE CONTROL OF HIGH ROTOR POLE SWITCHED RELUCTANCE MACHINE  
A system and method for reliable control of a high rotor pole switched reluctance machine (HRSRM) utilizing a sensorless reliable control system. The method comprising: energizing at least one of...
US20170126156 Sensorless Control of Switched Reluctance Machines for Low Speeds and Standstill  
A method for determining rotor position of a switched reluctance (SR) machine having a rotor and a stator is provided. The method may include injecting a test pulse into one or more idle phases of...
US20170117839 METHOD OF OPERATING A SWITCHED RELUCTANCE MACHINE  
A controller for a switched reluctance machine is operated to close a switch which would otherwise be open so as to connect a phase winding to the DC link to which the winding is connected during...
US20170117787 SWITCHED RELUCTANCE MOTOR WITH REDUCED TORQUE RIPPLE  
Aspects of the invention relate to a switched reluctance motor and the reduction of motor torque out-put ripple by inclusion of flux barriers. The inclusion of flux barriers running parallel to...
US20170099010 RECONFIGURABLE CONVERTER  
A reconfigurable converter includes a power circuit receives a direct current (DC) power signal and provides an alternating current (AC) output signal across at least three phases. The power...
US20170077858 MOTOR CONTROL DEVICE  
A motor control device is provided with a control circuit and a driving circuit. The control circuit switches over a current supply phase of the motor in a predetermined angular rotation of the...
US20170019049 FOUR-PHASE SWITCHED RELUCTANCE MOTOR TORQUE RIPPLE THREE-LEVEL SUPPRESSION METHOD  
A four-phase switched reluctance motor torque ripple three-level suppression method. A first set of torque thresholds is set in rotor position interval [0°, θr/4]. A second set of torque...
US20160352277 VOLTAGE CONTROL DEVICE AND VOLTAGE CONTROL METHOD  
A voltage control device includes: a capacitor configured to supply power to a rotating electrical machine; an inverter connected to the rotating electrical machine; a transformer coupled booster...
US20160336890 MOTOR ACCELERATION METHODS  
An improved method of starting a switched reluctance motor uses two neighbouring pairs of coils, both energised, to bring the rotor to its initial position. Then one of pairs of coils is turned...
US20160329852 MOTOR COIL TIMING METHOD  
A switched reluctance motor is controlled by sensing the position of the rotor of the motor to provide indications of the timings of one or more positions of the rotor per revolution of the rotor,...
US20160329839 SWITCHED RELUCTANCE MOTOR STARTING METHODS  
An improved method of starting a switched reluctance motor uses two neighbouring pairs of coils, both energised, to bring the rotor to its initial position. Then one of pairs of coils is turned...
US20160327409 METHOD CHECKING THE ORIENTATION OF A MAGNETIC RING POSITION INDICATOR  
A magnetic indicator ring has a set of boundaries between magnetic domains. Some or all of these are to be identified. A reference set of measurements of the angular widths between the boundaries...
US20160301347 Hybrid Hard Chopping and Soft Chopping Current Regulation  
A method of regulating a phase current of an electric motor is provided. The method may include selectively enabling one or more switches of each phase of the electric motor according to one of at...
US20160285402 METHOD AND APPARATUS FOR CONTROL OF SWITCHED RELUCTANCE MOTORS  
A short pitched switched reluctance motor control apparatus comprising a voltage provider comprising a first coupling and a second coupling configured to be coupled to a phase winding of the...
US20160268945 MOTOR CONTROLLER  
A motor controller of a permanent magnet motor includes an inverter, a torque and flux calculator configured to estimate or measure torque and flux generated in the permanent magnet motor as...
US20160248362 Hybrid Soft Switching for Current Regulation in Switched Reluctance Machines  
A method of regulating a phase current of an electric motor is provided. The method may include selectively enabling one or more switches of each phase of the electric motor according to one of at...
US20160226418 RELIABLE CONTROL OF HIGH ROTOR POLE SWITCHED RELUCTANCE MACHINE  
A system and method for reliable control of a high rotor pole switched reluctance machine (HRSRM) utilizing a sensorless reliable control system. The method comprising: energizing at least one of...
US20160211788 VEHICULAR CONTROL APPARATUS  
A vehicular control apparatus that includes a switched reluctance motor and an electronic control unit is provided. The switched reluctance motor has a rotor and a stator and is mounted as a...
US20160190967 MOTOR CONTROLLER  
A motor controller which controls a switched reluctance motor (hereinafter referred to as a motor) includes an inverter, a torque computation part, a magnetic flux computation part, and a...
US20160181962 ELECTRIC MOTOR  
An electric motor comprises a stator, rotor and powering circuit. A first stator pole is operable to attract a first rotor pole to rotate the rotor when the first stator pole is energized, and a...
US20160145833 SYSTEM AND METHOD FOR CONTROLLING POWER IN MACHINE HAVING HYDRAULIC DEVICES  
A power control system is disclosed for a machine. The system has an electric motor device configured to power a hydraulic device. The system also has an energy storage device configured to store...
US20160141995 Flyback Control Mode-Based Controller and Motor-Controlling Method Thereof  
A flyback control mode-based controller includes a power supply circuit, a position-checking circuit, a current-checking circuit, a control circuit, and a power output circuit. The power output...
US20160087570 System and Method to Control a Switched Reluctance Machine in Continuous Conduction  
A control system for a switched reluctance (SR) machine is disclosed. The SR machine may have a rotor and a stator. The control system may have a converter circuit operatively coupled to the...
US20160079893 ELECTRICAL MOTOR SYSTEM AND METHOD OF OPERATING THE ELECTRICAL MOTOR SYSTEM  
An electrical motor system comprises a switched reluctance electrical motor comprising a rotor section and a stator section, the rotor section comprising a plurality of rotor teeth and the stator...

Matches 1 - 50 out of 55 1 2 >