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US20130026957 BALANCED CONFIGURATION RELAY DEVICE WITH IMPROVED PERFORMANCES  
A relay device includes: an electromagnet constituted by a metallic core and an electrical winding associated therewith; and a mobile anchor associated with a traction spring and suitable for...
US20110199033 Partial Regeneration In A Multi-Level Power Inverter  
In one embodiment, the present invention includes a medium voltage drive system having multiple power cells each to couple between a transformer and a load. A first subset of the power cells are...
US20140260410 METHODS AND SYSTEMS FOR CONTROLLING POWER TO AN ELECTRIC MOTOR  
Methods and systems for controlling an electric motor are provided herein. The system is configured to be coupled to a power supply. The electric motor system includes a rectifier, an electric...
US20110247652 DEVICE AND METHOD FOR CONTROLLING AN ELECTRIC MOTOR  
The invention relates to a method and a device for controlling an electric motor (2), wherein an operating voltage and an operating current is supplied to an electric motor (2), and at least one...
US20130009581 Motor Converter Circuit for an Electric Drive Motor and Electric Drive Device Having Such a Motor Converter Circuit  
An electric drive device (1) comprises a motor converter circuit (3) according to the invention, which includes an intermediate circuit capacitor (16). The intermediate circuit capacitor (16)...
US20140062347 ELECTRONIC FITNESS DEVICE  
An electronic fitness device is provided, the electronic fitness device including an enclosure having a cover, a motor positioned within the enclosure, a circuit board, a variable resistor...
US20110024212 Electric Powertrain System Having Bidirectional DC Generator  
An electric powertrain for use with an engine and a traction device is disclosed. The electric powertrain has a DC motor/generator operable to receive at least a portion of a first mechanical...
US20110050134 Series electric engine power drive  
The motor generator set is described where in the output from the motor driven generator is fed back to the input of the electric motor in series with the power from the battery, which energizes...
US20120068655 OUTPUT FILTER AND MOTOR DRIVE SYSTEM INCLUDING THE SAME  
A motor drive system includes: a three-phase motor; a power conversion device that supplies power for driving the three-phase motor; and an output filter that is arranged between an output of the...
US20130049664 Method of Automatically Controlling a Motorized Window Treatment While Minimizing Occupant Distractions  
A load control system provides for automatically controlling a position of a motorized window treatment to control the amount of sunlight entering a space of a building through a window located in...
US20110234128 POWER SUPPLY CIRCUIT AND MOTOR DEVICE  
A power supply circuit has an input terminal for electrically connecting to an active wire of an AC power supply, an earth terminal for electrically connecting to a neutral or ground wire of the AC...
US20090066279 Thin sensorless multiphase DC motor for rotating display unit  
A thin sensorless multiphase DC motor for rotating display unit comprises a flat stator, a flat magnetized rotor, an axle, a power source and multiphase electronic controller. The flat stator...
US20080083168 MOTOR SPEED SENSOR ASSEMBLY  
A drive assembly for a vehicle door is provided. The drive assembly includes a motor having a driving member. The drive assembly further includes a housing having a shaft rotatably received...
US20080258663 Brushed motor controller using back EMF for motor speed sensing, overload detection and pump shutdown, for bilge and other suitable pumps  
A method and apparatus are provided for providing one or more brushed motor control signals for controlling the operation of a brushed motor, including a signal for disconnecting the power applied...
US20130207577 WIPER DEVICE  
A wiper device is provided that suppresses plastic deformation of a blade rubber of a wiper blade without wasting power of a battery installed to a vehicle. A wiper device is equipped with wiper...
US20110260661 Brake Resistor Control  
An electric drive system comprises a generator, a traction motor, a brake resistor, a bus, and a control unit. The generator, the traction motor, and the brake resistor are coupled electrically to...
US20110304287 CONTROL CIRCUIT AND METHOD FOR MANIPULATING A POWER TOOL  
The present application discloses a control circuit for a power tool and a method for manipulating the power tool. The control circuit has a detection circuit for battery packs, a calculating...
US20120007535 INVERTER TYPE MOTOR DRIVE  
It is presented an inverter type motor drive device for feeding three phase AC electric power to an electric motor, the inverter type motor drive device comprising: an insulated metal substrate...
US20110163700 METHODS AND SYSTEMS RELATED TO DESULFATION OF A BATTERY  
Desulfation of a battery. At least some of the illustrative embodiments are methods of inducing ringing across terminals of a battery to reduce and/or reverse the build up sulfate crystals on the...
US20120242258 BRUSHLESS FAN MOTOR CONTROL CIRCUIT ASSEMBLY  
A brushless fan motor control circuit assembly consists of a high-frequency filter circuit, a rectifier circuit, a power factor enhancing circuit, a current-limit and voltage regulation circuit and...
US20110084638 METHODS, SYSTEMS AND APPARATUS FOR DYNAMICALLY CONTROLLING AN ELECTRIC MOTOR THAT DRIVES AN OIL PUMP  
Methods, system and apparatus are provided for sensorless control of a vector controlled motor drive system that includes an electric motor used to drive an auxiliary oil pump.
US20130221877 Systems and Methods for Black Starting a Power Grid Using a Self-Starting Synchronous Condenser  
Systems and methods for black starting a power grid are described. A battery-powered configuration including, but not limited to, a motor, drive, and batteries can be coupled to a condenser which...
US20120293096 Power Tool and Battery Pack for Use Therein  
To prevent or suppress a secondary battery used in a power tool from being deteriorated, a battery property, such as internal resistance of the battery, and a battery status of the secondary...
US20130200831 POWER SUPPLY DEVICE  
A power supply device includes: an inverter that converts a DC power supplied from a battery pack into an AC power and outputs the AC power; and an adapter shapes a waveform of the AC power...
US20110043153 ELECTRONIC ORBIT CONTROL FOR SAWS  
A power saw having a reciprocating blade, including a housing having a handle portion for holding the saw; a variable speed motor in the housing for driving the reciprocating blade; a mechanism...
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...
US20140117908 DYNAMICALLY MODIFIED FAN SPEED TABLE FOR COOLING A COMPUTER  
A computer-implemented fan control method includes measuring a temperature within a computer system and dynamically selecting a fan speed step in response to the temperature received, wherein the...
US20140333230 Device for recovering, storing and retrieving electricity for a handling door  
The device for recovering, storing and retrieving electricity from the decelerations of an electromechanical system such as a flexible curtain of a handling door is made up of a management...
US20130193891 PRECISION-FASTENING HANDHELD CORDLESS POWER TOOLS  
Cordless power tools include a pistol housing having an upper portion that merges into a downwardly extending handle, a DC motor residing in the upper portion of the housing, the DC motor having a...
US20140001993 Electric Power Tool  
An electric power tool includes: a brushless motor having a plurality of stator windings and configured to rotate in accordance with voltages applied to the plurality of stator windings, an induced...
US20140368136 REDUCING THE POWER CONSUMPTION OF A BRUSHLESS MOTOR  
A method of controlling a brushless motor. The method includes measuring a temperature of the motor, adjusting a control value in the event that the measured temperature is lower than a threshold,...
US20140239858 Movement control system for a drilling plant  
A movement control system for a drilling plant includes a first hydraulic circuit with an inlet duct and an outlet duct for a working fluid, a pumping device of reversible type promoting the...
US20140252999 CONTINUOUSLY VARIABLE DYNAMIC BRAKE FOR A LOCOMOTIVE  
This disclosure is directed to a traction motor drive system. The traction motor drive system may include a field winding subsystem comprising a field winding associated with a traction motor. The...
US20130152816 CONTINUOUSLY VARIABLE DYNAMIC BRAKE FOR A LOCOMOTIVE  
This disclosure is directed to a traction motor drive system. The traction motor drive system may include a field winding subsystem comprising a field winding associated with a traction motor. The...
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...
US20120306421 Method and Device for Operating an Electric Motor  
A method for operating an electric motor is provided, wherein a motor actuating signal is generated and transmitted to the motor. In order to reduce the noise generated by operating the motor, a...
US20110215748 ELECTRIC ACTUATOR AND MODULE FOR SUPPLYING POWER DURING A POWER FAILURE  
An electric actuator is provided having the same configuration whether used as an ordinary electric actuator or as an electric actuator having an emergency shutoff function. A portion for supplying...
US20130154522 Method and Apparatus for Calibrating and Testing Brake Holding Torque  
A system and method for determining the holding torque of a brake in a material handling system is disclosed. The material handling system may include a bridge, a trolley, and a hoist, each driven...
US20120056573 Stepper Motor Controller With Braking Circuit  
An apparatus for controlling a stepper motor comprises a driver circuit and a brake circuit each having a motor controller device. The driver circuit, brake circuit and motor are connected in...
US20140179535 ELECTRIC DRIVE DEVICE FOR AN AIRCRAFT  
The invention relates to a drive device for an aircraft (100), at least comprising a battery (101) for storing electrical energy, an electric motor (103) for driving a propeller (104), a conducting...
US20120032627 BLADE PITCH CONTROLLING DRIVE FOR A WIND TURBINE  
The invention relates to a blade pitch controlling drive for a wind turbine, comprising an electrical converter, an electric motor that is electrically coupled to the converter, a monitoring unit...
US20140320048 System and Method for Reducing Radiated Emissions in an Integrated Motor Drive  
A motor drive, configured to be mounted to a motor, includes improvements to input circuits configured to receive and/or transfer power within the motor drive to reduce emissions over prior art...
US20120169266 POWER SWITCHING SYSTEM INCLUDING A MICRO-ELECTROMECHANICAL SYSTEM (MEMS) ARRAY  
A switching system includes a plurality of diodes forming a diode bridge, and a micro-mechanical system (MEMS) switch array closely coupled to the plurality of diodes. The MEMS switch array is...
US20140001989 Method for Operating an Electric Motor  
A method and device for determining the motor moment constant kM of an electric motor by measuring motor parameters on the running motor. For reduction of the previously considerable measuring...
US20090310264 MOTORISED BARRIER ROLLER  
A fire or smoke barrier 1 has a curtain 2 deployed from a motorised roller 3 mounted in a head box 4. Remote from the head box and connected to the motor via a cable 5 is a motor controller circuit...
US20100181769 MOTOR LOAD REDUCTION IN A WIND POWER PLANT  
A wind power plant is characterized in that a measurement device (18) is provided for the determination of the load on an electric motor (13, 14), wherein the control device (16, 17) reduces the...
US20130115031 GRAIN BIN SWEEP CONTROL  
A method for controlling the advancement of a grain bin sweep into a grain pile in a grain bin comprises monitoring the amperage of the auger drive and controlling the sweep drive motor based on...
US20140152228 DIVIDED PHASE AC SYNCHRONOUS MOTOR CONTROLLER  
A divided phase windings circuit includes motor divided phase windings, a power switch circuit comprising at least one power switch and a direct current (DC) supply circuit all at a midpoint of the...
US20140035500 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...
US20120136480 Method to control medical equipment  
A method to control medical equipment that moves along at least one axis or performs joint movement is provided. While the medical equipment is passively moved as operated by the operator, the...