Matches 1 - 28 out of 28

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US20130221895 MOTOR DRIVE CIRCUIT  
A motor drive circuit that performs PWM driving of an AC motor includes: rectifying circuit that rectifies power from an AC power supply; a DC intermediate circuit that smoothes an output of the...
US20080164836 Static Frequency Converter with Automatic Function for Optimizing Magnetic Flux and Minimizing Losses in Electric Induction Motors  
“STATIC FREQUENCY CONVERTER WITH AUTOMATIC FUNCTION FOR OPTIMIZING MAGNETIC FLUX AND MINIMIZING LOSSES IN ELECTRIC INDUCTION MOTORS”, having an automatic function for regulating and controlling...
US20140161646 Electric drivetrain of a device, and gas compression equipment including such a drivetrain  
An electric drivetrain of a device, such as a gas compression device, includes an electric machine and a system for supplying power to the electric machine, the electric machine including a rotor...
US20130207590 ELECTRIC POWER TOOL  
An electric power tool according to the present invention is provided with a tool main body, an induction motor, a power supply unit, and an inverter. The power supply unit and the inverter are...
US20100045229 GAIN EQUALIZATION DEVICE FOR MOTOR CONTROL  
A gain equalization device for an AC motor control includes two detection devices, a control process unit, a storage and two multipliers. Each detection device includes a current detector and an...
US20100090637 MOTOR SPEED CONTROLLER  
A motor speed controller and a method of controller a speed of a motor are provided. The system and method include a motor and a motor controller that monitors operation of the motor based on...
US20120161690 ELECTRICAL CIRCUIT FOR CONTROLLING ELECTRICAL POWER TO DRIVE AN INDUCTIVE LOAD  
A method and system are disclosed for controlling electrical current through an inductive load. The electrical current is supplied by one of at least three selectable dual capacitor bank...
US20140097785 ELECTRICAL CIRCUIT FOR CONTROLLING ELECTRICALPOWER TO DRIVE AN INDUCTIVE LOAD  
A method and system are disclosed for controlling electrical current through an inductive load. The electrical current is supplied by one of at least three selectable dual capacitor bank...
US20150135471 CENTRAL VACUUM CLEANER WITH SWITCHED-MODE POWER SUPPLY  
A circuit for controlling a motor of a central vacuum system, the motor being configured to operate using an alternating current is disclosed. The circuit includes an alternating current input for...
US20080094013 Electric Vehicle System for Charging and Supplying Electrical Power  
A power system that provides power between an energy storage device, an external charging-source/load, an onboard electrical power generator, and a vehicle drive shaft. The power system has at...
US20100164428 METHOD AND SYSTEMS FOR AN ENGINE STARTER/GENERATOR  
A method and system for an engine starter/generator is provided. The starter/generator system includes a three phase squirrel cage induction machine, a three phase inverter/converter electrically...
US20090284212 METHODS AND APPARATUSES FOR ESTIMATING TRANSIENT SLIP  
A method of determining a slip estimate associated with an induction motor through analysis of voltage and current signals. A fundamental frequency is calculated from a representation (e.g.,...
US20100148717 Asynchronous AC induction electrical machines in cross-interlockingly parallel connection  
At least two asynchronous AC induction electrical machines in parallel connection with the power source are respectively made with the main winding and control winding for operating the electrical...
US20110210692 Squirrel Cage Induction Motor and Squirrel Cage Induction Motor Driving System  
A squirrel cage induction motor includes: a stator core (11); a plurality of stator slots (12) radially disposed in a circumferential direction of the stator core (11) with predetermined...
US20100148716 Asynchronous AC induction electrical machines in cross-interlockingly parallel connection  
At least two asynchronous AC induction electrical machines in series connection with the power source are respectively made with the main winding and control winding for operating the electrical...
US20090039824 High power-density static-field ac conduction motor  
An ac motor for high-torque drive has a transformer with a magnetic circuit with a central limb. Either the two ends or the two connected electrodes of the secondary winding of the transformer...
US20140253011 MOTOR CONTROL SYSTEM  
A motor control system powered by an input power source. The system includes a reactive power reducing input power system in electrical communication with a motor and a constant frequency input...
US20150123578 METHOD AND APPARATUS FOR INCREASING A CURRENT SENSING RANGE IN A POLYPHASE MOTOR SYSTEM  
A method of increasing a current sensing range for a vehicle or other polyphase motor system includes measuring phase currents delivered to a motor of the system. A controller calculates an...
US20100116191 MOORING WINCH AND A METHOD FOR CONTROLLING A CABLE OF A MOORING WINCH  
An electrically driven mooring includes a winding drum (101), an alternating current motor (103) arranged to drive the winding drum, a frequency conversion unit (104) connected to the alternating...
US20120169268 SYSTEM AND METHOD FOR CONTROLLING TORQUE OF INDUCTION MOTOR IN ELECTRIC VEHICLE  
Disclosed is a system and a method for controlling torque of induction motor in electric vehicle. The system and method for controlling torque of induction motor in electric vehicle according to...
US20080211449 Multiphase Current Supplying Circuit, Driving Apparatus, Compressor And Air Conditioner  
A multiphase current supplying circuit includes a converter, an intervening circuit, an inverter, a control circuit and a lightning arrester. A power supply system is connected to the converter...
US20120119691 System for a Linear Drive  
A system, whereby drive units on a movable part, e.g., a turntable or linear drive, are powered in a contactless manner via, in each instance, an inductive coupling to one or more primary conductors.
US20150008863 VECTOR CONTROL APPARATUS OF INDUCTION MOTOR  
The present disclosure provides a vector control apparatus that operates by a diameter computation-free winder velocity control algorithm with enhanced operational reliability. The vector control...
US20140042954 Apparatus and Method for Efficiently Powering a One-Phase Motor  
An apparatus and method for drastically increasing the efficiency of a single phase AC motor. A DC solid state driver is used to pulse a combination of the motor coil and a series capacitor. The...
US20100207397 ELECTRIC DRIVE  
An electric drive has at least one electric motor and a power converter feeding electrical motor current thereto. A current desired-value emitter generates a reference signal. An additional...
US20140184116 APPARATUS FOR MOTOR CONTROL SYSTEM AND ASSOCIATED METHODS  
A motor control apparatus to control a motor external to the motor control apparatus includes a microcontroller unit (MCU). The MCU includes mixed signal motor control circuitry adapted to perform...
US20170141711 METHOD AND APPARATUS FOR OPTIMIZING EFFICIENCY OF INDUCTION MOTOR IN ELECTRIC VEHICLE  
The present invention is to adjust the relevant parameters at the variable load factor of the motor of the electric vehicle and the arbitrary rotational speed through the optimization algorithm...
US20160087567 NORMALIZATION OF MOTOR PHASE MEASUREMENTS  
A method of normalizing phase measurements for a motor using a normalizing phase measurements (NPM) algorithm that a processor implements to cause a motor controller coupled to stator terminals of...
Matches 1 - 28 out of 28