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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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,... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |