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US20110241595 SYSTEMS AND METHODS FOR DECELERATING A MOTOR IN A COMPUTER NUMERICAL CONTROLLED MACHINE TOOL  
A method for decelerating a motor in a computer numerical controlled machine tool is provided. The method includes calculating a present rate of deceleration DP, for a motor of a motor drive...
US20130038262 MOTOR CONTROL DEVICE  
A motor control device has a drive circuit that drives an electric motor with a battery as a power supply, a switch element that is provided between the battery and the drive circuit, the switch...
US20140232312 METHOD FOR STARTING A WASHING MACHINE ELECTRIC MOTOR  
The present invention relates to a method for starting a washing machine electric motor and, more particularly, an adaptive method for starting a washing machine electric motor, which is...
US20090091280 STOCHASTIC ANTI-WINDUP PROPORTIONAL-INTEGRAL (PI) CONTROLLER  
Different circuit-based implementations of stochastic anti-windup PI controllers are provided for a motor drive controller system. The designs can be implemented in a Field Programmable Gate...
US20130293162 CONTROL OF HEAVY MACHINES  
The present invention relates to a system for controlling rotational speed on a rotating process machine, which for example is a turbine or a propeller, where the rotating process machine is...
US20130342147 ASSEMBLY FOR CONTROLLING AN ELECTRIC VACUUM PUMP  
An assembly for controlling an electric vacuum pump for a vehicle, which is connectable by at least one switch, which can be controlled by an electronic control unit, to a supply voltage, wherein...
US20130187588 MOTOR DRIVE SYSTEM AND CONTROL METHOD THEREOF  
A motor drive system comprising: an inverter that supplies power to a three-phase motor; and a control unit that, when first stopping and then commencing supply of alternating current to three...
US20130334996 VARIABLE-SPEED HOISTING MACHINE  
A variable-speed hoisting machine uses an electric motor having a pull-rotor brake as a hoisting motor and capable of supplying the electric motor with an electric current that can reliably...
US20140265974 METHODS AND SYSTEMS FOR STARTING AN ELECTRIC MOTOR  
Methods and systems for starting an electric motor using a motor controller including a processor are provided. The method includes determining if the electric motor is operating, increasing a...
US20150219109 ELECTRONIC APPARATUS WITH FAN MOTOR  
If a fan motor in a stopped state remains stopped even when it is powered on, restart processing of the fan motor is carried out by rotating the fan motor forward and backward. If the fan motor...
US20090066280 MOTOR DRIVE CIRCUIT AND COOLING SYSTEM USING SAME  
A motor driving circuit generates pulse driving signals, and controls the ON/OFF state of a switching circuit connected to a coil of a motor which is to be driven, thereby controlling the...
US20110181222 MOTOR CONTROL SYSTEM AND METHOD  
A highly efficient and reliable motor control system and motor control method are provided. The motor control system includes a motor having a plurality of sets of armature windings, a plurality...
US20090174356 STARTING CIRCUIT FOR SINGLE-PHASE AC MOTOR  
A starting circuit for a single-phase AC motor, comprising a main winding, a detecting circuit, a rectifying and filtering circuit, a triggering circuit, a switching circuit and a starting...
US20100270961 Method and Device for Controlling an Electric Motor ( amended  
A method and a device for controlling and/or regulating an electric motor. Such electric motors are used for example in motor vehicles in the form of pump motors. In general, the electric motor is...
US20070024224 kW-based torque control for AC motors  
A kW-based torque controller for use with an AC induction motor has been developed that includes an AC-to-DC converter for receiving incoming three-phase power from a utility and converting the...
US20100327790 CONTROL METHOD AND MOTORSTARTER DEVICE  
A method for controlling an electric motor with a softstarter. A softstarter device for control of electric motors. Motor torque is controlled in dependence of a torque error signal, based on a...
US20150188480 ELECTRIC MOTOR, COMPRESSOR, AND METHOD FOR CONTROLLING ELECTRIC MOTOR OR COMPRESSOR  
An electric motor, a compressor including the electric motor and a method for controlling the electric motor or the compressor are provided. The electric motor includes: a stator; single-phase or...
US20090267553 UNKNOWN  
A starting device for an internal combustion engine, especially that of a motor vehicle, comprises: a stator, or inductor, comprising an inductor coil (5), said inductor coil comprising at least...
US20090223726 Hybrid fuel cell vehicle with multi-power source and multi-drive system and method of controlling the same  
A hybrid fuel cell vehicle with a multi-power source and a multi-drive system includes: a plurality of primary power sources sharing a single main bus terminal and connected in parallel to each...
US20140097777 DRIVING A ROTATING DEVICE BASED ON A COMBINATION OF SPEED DETECTION BY A SENSOR AND SENSOR-LESS SPEED DETECTION  
Some of the embodiments of the present disclosure provide a method comprising detecting, based on a sensor and a back electromagnetic force generated in a rotating device, a speed of the rotating...
US20130020975 OPERATIONALLY DEPENDENT FILTERING FOR SOFT STARTER CURRENT MEASUREMENTS  
A system and method for optimizing current filtering in a motor soft starter is disclosed. A motor soft starter includes a circuit having an input connectable to an AC source and an output...
US20080079378 CONTROLLER AND CONSTANT MEASURING APPARATUS FOR AC MOTOR  
A controller and a constant measuring apparatus have a means for supplying a synthesized current, resulting from superimposing an AC current to a DC current, from an inverter and for changing the...
US20130193890 MEDIUM VOLTAGE INVERTER CONTROL APPARATUS AND MEDIUM VOLTAGE INVERTER SYSTEM  
An exemplary embodiment of the present disclosure includes a medium voltage inverter control apparatus and a medium voltage inverter system using the same. The medium voltage inverter control...
US20080309282 Restart control of an A.C. motor drive  
Method of and system for controlling the restart of an A.C. motor drive comprising an A.C. motor (4), a power converter (20, 21, 22) for stepless speed control of the A.C. motor and a load switch...
US20140253005 THERMAL STRESS REDUCTION IN AIRCRAFT MOTOR CONTROLLERS  
A thermal stress reduction method includes ramping an electric power generator to start an aircraft engine, for a time period associated with the aircraft engine start sequence toggling a...
US20090009119 POWER CONVERTING DEVICE FOR ELECTRIC TRAIN  
A power converting device for an electric train includes a power converter, an alternating-current motor, a primary control unit, and a control unit. The power converter converts direct-current...
US20130257330 MOTOR DRIVING CONTROL DEVICE  
A motor driving device comprises: an AC/DC converter that converts alternating current power into direct current power; a motor driving unit that operates based on the direct current power...
US20110248654 Self-Propelled Working Machine with Electrical Drive System and Processes for Operating the Same  
The present invention relates to a self-propelled working machine, especially in the form of a surface milling machine, such as asphalt-milling machine or snow-milling machine comprising a main...
US20130241456 Starter Apparatus, System, and/or Method for a Separable-Winding Motor  
Starter apparatuses are provided for multiple-winding motors. Such starters can function with a single/combined overload device/circuit, rather than requiring multiple overloads relays and...
US20150108932 APPARATUS FOR RESTARTING MEDIUM VOLTAGE INVERTER  
An apparatus for restarting a medium voltage inverter is disclosed, wherein the inverter changes a voltage or a frequency outputted to a motor in response to an input voltage of the motor and a...
US20120274252 FAN MOTOR CONTROL DEVICE  
A fan motor control device for controlling the soft start of a fan motor is disclosed. The fan motor control device comprises a converter, a starting capacitor, and a controller. The converter...
US20100059240 METHOD FOR TIGHTENING A SCREW CONNECTION AND SCREW DRIVING TOOL  
Disclosed is a method for screwing in and tightening a screw connection (1) to a predetermined tightened level (2), especially a predetermined torque level (2) or a predetermined pretension level,...
US20100115929 CURRENT LIMITING DRIVER FOR ELECTRIC AIR PUMP  
The present invention relates to a secondary air supply arrangement having an actuator operably connected to an air pump for creating air flow between an inlet and outlet of the air pump. A pulse...
US20090206783 Soft start for electric motor of a power tool  
A power tool has an electric motor with field windings. In an aspect of the invention, each field winding includes two coils wound with the same number of turns of the same gauge magnet wire. When...
US20090198416 MATERIALS HANDLING VEHICLE HAVING A CONTROL APPARATUS FOR DETERMINING AN ACCELERATION VALUE  
A materials handling vehicle is provided comprising: a frame; wheels supported on the frame; a traction motor coupled to one of the wheels to effect rotation of the one wheel; a speed control...
US20090267552 Soft Starting Method and System Thereof in the Way of Wave-Skipping with Stepped Frequency and Stepless Voltage Regulating for a Motor  
The invention relates to a soft starting method and system thereof in the way of wave-skipping with stepped frequency and stepless voltage regulating for a motor which can be applied to the large...
US20130015799 Power Converter  
The present invention provides a power converter which, while ensuring safety, implements control for the flow of a constant current in a specified switching element, more accurately determines...
US20090263260 INVERTER DEVICE  
The inverter device contains the following structure: an inverter circuit which has upper-arm switching elements that are connected on a positive side of a DC power source and lower-arm switching...
US20110199032 CONTROL APPARATUS FOR MATRIX CONVERTER  
A control apparatus for a series-connected multi-level matrix converter includes each voltage commanding device provided for each of single-phase matrix converters to generate a voltage reference...
US20080272724 FAN MOTOR DRIVING CIRCUIT  
A fan motor driving circuit controls an energized state of a fan motor by performing on and off control of a switching circuit connected to a coil of the fan motor of a driving object. A variable...
US20130278196 METHOD FOR AUTOMATICALLY ESTIMATING INERTIA IN A MECHANICAL SYSTEM  
Systems and methods for estimating an inertia and a friction coefficient for a controlled mechanical system are provided. In one or more embodiments, an inertia estimator can generate a torque...
US20150171625 Integrated Soft Start and Safety Shutdown  
The subject matter of this specification can be embodied in, among other things, a current control assembly that includes an electrical current flow path having a maximum current flow rate, a...
US20100045223 Method for operating a motor system, and motor system  
In order to enable in a motor system, in which a soft start of the motor has been implemented, the operation of the motor, wherein the power consumption is reduced, it is proposed to operate the...
US20140176034 MOTOR DRIVE SYSTEM  
A motor drive system includes a first interlock mechanism configured to be activated in response to transition to an operable state of an interruption device, to open an open/close device, a...
US20120249036 Motor Control Apparatus and Image Forming Apparatus  
A motor control apparatus includes a target acceleration setting unit, a control unit, an acceleration upper limit estimation unit, a mode switching unit, a detection unit and a trajectory setting...
US20100225263 MOTOR DRIVING CIRCUIT AND METHOD FOR DRIVING MOTOR  
A motor driving circuit receives a control pulse signal pulse-width modulated according to a target rotational speed, and drives a fan motor. A start pulse signal generating unit generates a start...
US20080315812 Method and device for starting an electric machine with a magnetically mounted rotor  
A method and a device with a control apparatus (50) for starting an electric machine (10) with a rotor (20), particularly the spinning cup of an open-end spinning machine, magnetically mounted by...
US20120206079 ENERGY CONVERTER AND ELECTROMECHANICAL APPARATUS  
An energy converter includes magnetic coils of N phases (N is an integer of 3 or more), and a PWM drive circuit for driving the magnetic coils of N phases, wherein the magnetic coil of each phase...
US20160268934 MOTOR PROTECTION RELAY AND METHOD FOR STARTING MOTOR OF MOTOR PROTECTION RELAY  
The present disclosure relates to a motor protection relay and a method for starting a motor of the motor protection relay, and particularly, to a motor protection relay capable of softly starting...
US20160268933 Arc Free Phase Control Alternatives for AC Motor Starters  
An arc-free phase control circuit for an AC motor that brings about an energy saving effect according to a load change and operates efficiently in terms of cost reduction while securing electrical...

Matches 1 - 50 out of 58 1 2 >