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US20140354206 System and Method for Temperature Estimation in an Integrated Motor Drive  
A system to monitor the temperature of power electronic devices in a motor drive includes a base plate defining a planar surface on which the electronic devices and/or circuit boards within the...
US20140265741 System and Method for Temperature Estimation in an Integrated Motor Drive  
A system to monitor the temperature of power electronic devices in a motor drive includes a base plate defining a planar surface on which the electronic devices and/or circuit boards within the...
US20110309780 SEAL LEAKAGE AND SEAL OIL CONTAMINATION DETECTION IN GENERATOR  
Detection of, among other things, seal leakage(s) and/or seal oil contamination for a gas cooled generator are provided. Detectors according to some embodiments of the invention provide mechanisms...
US20110221373 COMPUTER FAN ALARM CIRCUIT  
A circuit for alarming abnormal state of a computer fan includes a detection circuit coupled to the computer fan, a controller coupled to the detection circuit and the computer fan, an alarm unit...
US20140247002 MOTOR ASSEMBLY WITH INTEGRATED ON/OFF DETECTION WITH SPEED PROFILE OPERATION  
A motor assembly coupled to an external alternating voltage input, the motor assembly comprising a motor including a stator and a rotor rotatable about a longitudinal axis. The motor assembly...
US20130271054 ELECTRIC TOOL  
An electric tool may include an electric motor, a switch operable by a user for adjusting the rotational speed of the electric motor, an operation amount detection device configured to detect the...
US20110083708 Ultrasonic Cleaning System with Transducer Failure Indicator  
An ultrasonic cleaning system that includes an electrical power supply, and a plurality of ultrasonic transducers coupled in parallel, wherein the plurality of ultrasonic transducers are coupled...
US20140203750 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...
US20110025247 METHOD AND SYSTEM FOR TESTING ELECTRIC MOTORS  
Method and systems for testing an electric motor are provided. A switching circuit coupled to the motor is operated in a first mode causing current to flow through the motor such that the motor is...
US20110181224 METHOD FOR MEASURING AN OPERATING VARIABLE AT MULTIPLE ELECTRIC MOTORS OF AN AUTOMATIC PARKING BRAKE  
A method for measuring at least one operating variable at multiple electric motors of an automatic parking brake with the aid of a sensor system, the signals generated by the sensor system being...
US20140152224 MOTOR DRIVE CIRCUIT, MOTOR DEVICE, AND MOVING VEHICLE  
A motor drive circuit comprises: a DC power supply; power supply lines; an inverter which has upper arm switch elements and lower arm switch elements; and a detection unit for detecting, based on...
US20130009583 DEMAGNETIZATION DETECTION DEVICE AND DEMAGNETIZATION DETECTION METHOD THEREOF  
A demagnetization detection device and a demagnetization detection method thereof are provided. The demagnetization detection device is for use in a power control unit which is electrically...
US20110227521 METHOD OF STARTING A FAN  
A fan starting method including following steps is provided. A fan module including a control unit and a fan is provided, wherein the control unit and the fan are electrically connected with each...
US20150222216 MOTOR CONTROL DEVICE, AND MOTOR CONTROL METHOD  
In order to highly accurately estimate a temperature of a permanent magnet to be used for a rotor of a motor, provided is a motor control device for a vehicle including a motor as a drive power...
US20140265984 System For Selecting An Output Speed For An Electric Motor  
An electric motor has a control circuit that enables an operational speed of the electric motor to be selected with reference to multiple ranges of speeds and the input voltage to the motor....
US20110057594 METHODS AND SYSTEMS FOR DETERMINING AND DISPLAYING A TIME TO OVERLOAD OF MACHINE TOOLS  
Systems and methods for determining and displaying a time to overload of a motor in a computer numerical controlled (CNC) machine tool are provided. A method includes monitoring a fuse level of a...
US20110241458 STATOR COIL COOLANT FLOW REDUCTION MONITORING  
A coolant flow reduction monitoring system for a rotary electric machine having stator coils within a plurality of slots of a stator thereof is provided. The stator coils are cooled by a coolant...
US20130307448 MOTOR CONTROL DEVICE  
An object is to provide a specific achievement means for achieving reliable failure determination in a control system in a motor control device. The motor control device includes motor drive means...
US20150101890 Encoder Eccentricity Correction For Elevator Systems  
An encoder assembly is disclosed. The encoder assembly comprises a motor having a rotor, and an encoder. The encoder comprises an encoder wheel axially coupled to the rotor, a first sensor...
US20140001997 MOTOR AND METHOD OF MEASURING AND CONTROLLING DISTANCE OF AIR GAP BETWEEN ROTOR AND STATOR ASSEMBLY  
Disclosed herein is a motor including: a rotor including a shaft; a stator assembly rotatably supporting the rotor; and an air gap measuring module measuring a distance of an air gap between the...
US20140292252 CIRCUIT AND METHOD FOR SPEED MONITORING OF AN ELECTRIC MOTOR  
A method for determining a phase angle between voltage applied to a winding of the electric motor and an electric current flowing through the winding may include receiving a signal from the...
US20140015463 METHOD FOR OPERATING AN ELECTRIC MACHINE IN A SHORT-CIRCUIT MODE  
A method for operating an electric machine (24) in short-circuit operation, in particular for use in a motor vehicle, characterized by the steps of: measuring at least a first and a second phase...
US20120299521 ELECTRIC MOTOR AND METHOD FOR CONTROLLING THE SAME  
An electric motor (100) having a motor control system (400) including:—a current measuring means (402) for directly or indirectly measuring the electric current in the rotor windings (7) providing...
US20110199036 METHOD AND DEVICE FOR DIAGNOSING A FAN  
Method for diagnosing a fan, in particular in a cooling circuit of an internal combustion engine, a current driving the fan being ascertained. The fan is triggered by a defined trigger signal, and...
US20090284206 MOTOR CONTROLLER FOR CONTROLLING AN ELECTRIC MOTOR  
A motor controller for controlling at least one electric motor has an operating signal generator for generating an operating control signal for the at least one electric motor and also a sound...
US20130119913 INTEGRATED DRIVE MOTOR POWER INTERFACE  
An integrated drive motor (IDM) power distribution architecture utilizes an IDM power interface module (IPIM) to create a control voltage that is distributed to all the IDMs in a network. This...
US20120229067 VOLTAGE REGULATOR FOR DC MOTORS  
A voltage regulator for a pair of electric motors has an input for a signal indicative of the desired speed for the motors and a pulse width modulation control circuit device. A control module...
US20140232313 Reduced Size Power Inverter Suitable for a Vehicle  
A power inverter comprises at least a box-shaped housing; and a power module, a smoothing capacitor, a base plate made of a flat plate, and a rotating electric machine control circuit board...
US20120249038 GROUND SCHEME IDENTIFICATION METHOD  
The present techniques include methods and systems for detecting the grounding condition of an electrical system to automatically determine a suitable electrical drive configuration. The drive...
US20140117912 System For Detecting Internal Winding Faults Of A Synchronous Generator, Computer Program Product And Method  
A system, method and computer program product for monitoring including detecting internal faults especially inter-turn faults of a synchronous generator and thus protecting the synchronous...
US20080218113 Output Contact for Feedback in Integrated Circuit Motor Driver  
An integrated circuit has drive circuitry to drive the windings of an electrical motor, means to make a measurement from the drive circuitry during rotation of the motor, suitable for use as motor...
US20100147039 DEVICE AND METHOD FOR SENSING TEMPERATURE OF A ROTATING ELECTROMAGNETIC MACHINE  
A system and method of determining the temperature of a rotating electromagnetic machine, such as an electric motor or generator. A temperature calibration parameter is calculated based on the...
US20140028234 MOTOR DRIVE OVERCURRENT DETECTING CIRCUIT, MOTOR DRIVING CIRCUIT WITHOUT HEADROOM VOLTAGE LOSS, AND METHOD FOR DETECTING OVERCURRENT IN MOTOR DRIVING CIRCUIT  
The present invention relates to a motor drive overcurrent detecting unit, a motor driving circuit without a headroom voltage loss, and a method for detecting an overcurrent in a motor driving...
US20100090636 MOTOR CONTROL CIRCUIT  
A motor control circuit 1 for controlling driving of a plurality of motors is provided with a plurality of motor driver circuits 7 and 8 for controlling driving of the plurality of motors 3 and 4,...
US20080258667 TEST MODULE FOR MOTOR CONTROL CENTER SUBUNIT  
A system and method are provided for coordinating the installation and removal a motor control center subunit with the power connection and interruption thereof A system of interlocks and...
US20140253007 METHOD AND DEVICE FOR IDENTIFYING AN ELECTRIC MACHINE  
A method for generating a challenge-response pair in an electric machine as a basis for an identification or authentication is described, the electric machine having a stator and a rotor, a first...
US20130300333 APPARATUS FOR ESTIMATING QUANTITY OF STATE RELATING TO MOTOR, AND ELECTRIC TOOL  
The present application discloses an apparatus including: a motor model that reflects a characteristic of a motor and includes at least inputs pertaining to a first quantity of state and a second...
US20110229163 LOAD ABNORMALITY DETECTION APPARATUS PERFORMING ACCURATE JUDGMENT OF CAUSE OF ABNORMALITY  
A load abnormality detection apparatus detects a load abnormality in at least one of a first rotational member and a second rotational member. An element acquisition part acquires a first control...
US20130343772 LOAD ABNORMALITY DETECTION APPARATUS PERFORMING ACCURATE JUDGMENT OF CAUSE OF ABNORMALITY  
A load abnormality detection apparatus includes first and second rotational members that contact each other directly or via a recording medium interposed therebetween, a first motor that drives...
US20090058332 LOCK DETECTION METHOD AND LOCK DETECTION CIRCUIT FOR MOTOR FOR POWER-FOLDING MIRROR  
The present invention is intended to, when rotation of a mirror rotation unit in a power-folding mirror is mechanically locked and its drive motor is thereby locked, make it possible to correctly...
US20090056554 METHOD FOR COUNTING THE NUMBER OF REVOLUTIONS OF A BURR OF A COFFEE MILL AND APPLIANCE COMPRISING SUCH A MILL  
A method for counting the number of revolutions of a burr of a coffee mill driven in rotation by an electric motor. According to the method: at least one electrical parameter Pi of the motor that...
US20140327383 PARCEL AND MASS FLOW SCALE  
Weighing system (FIG. 3, FIG. 6) to weigh items, parcels and the like while they are moving, for example, on a conveyor. A servo amplifier (14) and servo controller (20) are arranged to drive a...
US20130193895 MOTOR CONTROL APPARATUS AND CONTROL METHOD THEREOF  
The second torque value and a motor speed detected from the motor in operation are compared to an upper limit and lower limit of torque tolerance which is obtained based on the third torque value....
US20150155807 AUTO CALIBRATION DRIVER IC AND ITS APPLICATION MOTOR DRIVER SYSTEM  
A motor driver IC with auto calibration function is provided, the motor driver IC utilizes a Hall sensor of a switched sensor circuit to detect the changes in an external magnetic field. By using...
US20090179605 Resolver Abnormality Detection Circuit  
An abnormality detection circuit for a resolver outputs a rotation angle signal corresponding to a rotation angle of a rotor from a resolver winding. In the abnormality detection circuit, the...
US20140265976 METHOD TO IMPLEMENT DRIVE DIAGNOSTICS AND PROGNOSTICS AUTOMATICALLY  
An electric motor drive system includes a fan configured to cool power electronic components of the electric motor drive system. The electric motor drive system also includes a temperature sensor...
US20140184125 METHOD AND DEVICE FOR MONITORING A TORQUE OF AN ELECTRIC MOTOR  
The invention relates to a method (40) for monitoring a torque of an electric motor (10), in particular for application in a motor vehicle, wherein the electric motor (10) is supplied with...
US20140103848 ERROR DIAGNOSTICS AND PROGNOSTICS IN MOTOR DRIVES  
An automation network that utilizes motor drives to diagnose faults, and provide potential solutions to a user. The fault status and/or diagnostic remedies may be displayed via a user display...
US20140191697 STATOR WINDING DIAGNOSTIC SYSTEMS AND METHODS  
Systems and methods are provided for diagnosing stator windings in an electric motor. An exemplary method for diagnosing stator windings in an electric motor involves determining an input energy...
US20140184124 COMPUTING DEVICE AND METHOD FOR PROTECTING FAN OF COMPUTING DEVICE  
In a method for protecting a fan of a computing device, firstly, a current supplied to the fan is read. Secondly, if the current supplied to the fan is more than or equal to a predefined current,...

Matches 1 - 50 out of 418 1 2 3 4 5 6 7 8 9 >