Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 451 - 500 out of 11,434

Document Document Title
WO/2006/050271A3
A compressor (26) is powered by a motor (24) which is, in turn, powered by a variable speed drive (VSD) (20). The switching frequency and voltage/frequency relationship of the VSD (20) may be adjusted dynamically to maximize efficiency.  
WO/2008/130560A1
A mover (344) moving a stage (238) along a first axis and about a second axis includes a magnetic component (454), and a conductor component (456). The magnetic component (454) includes one or more magnets (454D) that are surrounded by a...  
WO/2008/130411A1
A solid state soft start controller system (10) has a power supply (20), an electric motor (34), a thyristor (18) electrically interconnected between the power supply (20) and the electric motor (34) so as to selectively allow current to...  
WO/2007/089083A3
The present invention discloses a control apparatus for a linear compressor which can vary a cooling force and prevent an inrush current. The control apparatus for the linear compressor includes a coil winding body (L) laminated on the l...  
WO/2008/130648A1
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 to the brushed motor so that the brushed...  
WO/2008/130957A1
A method of controlling a motorized window treatment provides for continued operation of the motorized window treatment during an overload condition, a low-line condition, or an electrostatic discharge (ESD) event. The motorized window t...  
WO/2007/149360A3
A method and apparatus for an automated waste receptacle includes a waste flap, a motor positioned on a bottom side of the waste flap and an actuator located in proximity of the top side of the waste flap, wherein the actuator is configu...  
WO/2008/005363A3
A method and system for controlling a current regulator motor control for parking a motor rotor in a predetermined position, wherein a first current command and a first angle command are supplied to a current regulator for a first parkin...  
WO/2008/113140A1
The present invention relates to a control system, a method and arrangement for motors and motor-compressors, designed for operation in a wide voltage range of the feed network. The control system, method and arrangement for motors and m...  
WO/2008/110209A1
A method and a system are proposed to start at least two AC motors (SM, IM) which are supplied by a power converter (8) via a common AC bus (7). A synchronous motor (SM), which is one of the at least two AC motors, is started first. Afte...  
WO/2008/016744A3
A method, apparatus or computer program (FIG 4) implements an overload prevention approach involving monitoring a speed (410) o a motor, detecting an overload (420) condition of the motor based on the monitored speed, and controlling an ...  
WO/2008/096090A1
The invention relates to a device for controlling the speed and the rotation direction of an asynchronous motor (1), comprising a first circuit (7) with two bi-directional switches (T'4, T'5) individually controlled and having first cond...  
WO/2008/038125A3
An electronic starter device (1) for an electric motor (2) including a first terminal (11) connected in use to a mains voltage source (7) selectively activatable by means of control means (8) to feed respective starter (3) and run (4) wi...  
WO/2008/087956A1
It is possible to eliminate the need of a voltage detector for detecting an input voltage of an AC motor and to smoothly start an AC motor without making a trip by failure of a control device. In as method for starting an AC motor of a p...  
WO/2008/086608A1
A wind turbine and method of operation thereof uses a plurality of generators and a controller to control the operation of the turbine based on various parameters. The generators are each smaller than the total power capacity of the turb...  
WO/2008/083957A2
The invention relates to a simple control method for a motor-driven adjusting device (1) for use in a motor vehicle, which method allows a reliable operation of the adjusting device. The invention is characterized in that prior to any au...  
WO/2008/042382A3
Towel dispensing methods and automatic towel dispensers (100) permitting conservation of the overall amount of towel (105) dispensed. The towel dispensing methods and towel dispensers limit the amount of towel dispensed in dispense cycle...  
WO/2008/048615A3
A device includes a housing configured with a working element. The device further includes a motor configured for urging motion of the working element. The device further includes a power control module. The power control module is confi...  
WO/2008/064956A1
The invention relates to pulse-width-modulation driving of a manually operated electric machine tool with rechargeable-battery power supply, with a pushbutton which can be actuated by an operator and whose push-button travel is converted...  
WO/2008/033033A3
Method and system for start and operation of an electrically driven load, e.g. a compressor (1) or pump, by power supply from a mechanical driver, e.g. a turbine or combustion engine, whereby the load is mechanically connected to a first...  
WO/2008/050575A1
An inexpensive, productivity-enhanced single-phase AC synchronous motor in which stabilized synchronous pull-in can be carried out by suppressing generation of counter torque during a starting operation. Starting operation is performed w...  
WO/2008/047961A1
A driving apparatus for a fan using multiple HIMs capable of enhancing a reliability by sequentially driving multiple HIMs with a low voltage by using an NTC (Negative Temperature Coefficient) characteristic. The driving apparatus for a ...  
WO/2008/027378A3
A system (10) comprising at least one flywheel (46), a first motor (12), a dynamo (20), and a second motor (22). The first motor (12) may consuming electrical power and urging rotation of the flywheel (46). The dynamo (20) may use rotati...  
WO/2008/038125A2
An electronic starter device (1) for an electric motor (2) including a first terminal (11) connected in use to a mains voltage source (7) selectively activatable by means of control means (8) to feed respective starter (3) and run (4) wi...  
WO/2007/121338A3
A stator for a motor having a rotor includes a plurality of laminations each formed in a first elongated arrangement. Each lamination includes a first leg, a second leg, and an intermediate portion that are configured to be rearranged an...  
WO/2008/039183A1
Various systems and methods for controlling DC motors are disclosed herein. For example, one method provides for controlling a polyphase, brushless DC motor. The method includes providing a DC motor that has a plurality of phases. Such a...  
WO/2008/033088A1
A method for reducing the influence of a DC component in a load current of an asynchronous three-phase motor, in which the voltages of two of the three phases are controlled by adjusting firing angles of semiconductor devices of the type...  
WO/2008/033033A2
Method and system for start and operation of an electrically driven load, e.g. a compressor (1) or pump, by power supply from a mechanical driver, e.g. a turbine or combustion engine, whereby the load is mechanically connected to a first...  
WO/2008/028798A1
In order to enable in a motor system (1), in which a soft start of the motor (2) has been implemented, the operation of the motor (2), wherein the power consumption is reduced, it is proposed to operate the driver circuit (5) during a sw...  
WO/2008/028798A2
In order to enable in a motor system (1), in which a soft start of the motor (2) has been implemented, the operation of the motor (2), wherein the power consumption is reduced, it is proposed to operate the driver circuit (5) during a sw...  
WO/2008/025236A1
A cable controller comprises a MCU for controlling a indicator light and a buzzer, sampling a fingerboard and managing the communication with a motor controller, a drive circuit for driving the indicator light and the buzzer, a cable com...  
WO/2008/027873A2
A solid state reversing AC motor starter that employs a DC power source and a power bridge emρloying insulated gate bipolar transistors that provide an ungrounded three phase AC output. The AC output is connected to the power input of t...  
WO/2008/017248A1
An electric control system comprises a combined switch (SA), a conversion switch (SE), a startup pushbutton (SF), a stop pushbutton (SS), and a middle relay (KS). One end of the combined switch (SA) is connected between the conversion sw...  
WO/2008/014681A1
A discrete frequency soft starting method and its device for an electric machine, trigger signals generated by a control system act on sets of inverse parallel thyristor valves (SA,SB,SC,SD,SE) connected between the supply and the electr...  
WO/2008/009045A1
A multi-purpose drive system for a combustion engine, said drive system comprising: an AC motor adapted to drive the engine, a motor controller arranged for regulating at least one functional parameter of the motor and/or engine by contr...  
WO/2006/135675A3
A power converter circuit for providing maximum utilization of a DC bus voltage to a two-phase Permanent Magnet Synchronous Motor (PMSM) is disclosed. The circuit includes first, second, and third nodes, each node being the junction betw...  
WO/2005/111412A3
A self-calibrating, continuous variable speed fan for use in cooling electronic circuitry is disclosed. Upon initial power-up, in an environment of known temperature, the self-calibrating fan accommodates for the tolerances on its electr...  
WO/2007/141075A1
In a machine, as for example a construction machine, a production machine, or a robot, cargo is moved by means of a drive via a gear mechanism. To start the movement, static friction must be overcome. According to the invention this occu...  
WO/2005/112522A3
Methods and apparatus are provided tor an amplifier for use with a nonlinear load In some embodiment, a method is provided for driving a flash lamp The method comprises providing an amplifier (40, 50, 60 70 in Fig. 2) having a resonant r...  
WO/2007/134764A1
In order to simplify the changeover of an accelerated synchronous electric motor (4) on a run frequency converter (3) from being stopped to an operating speed on a power frequency converter (2), the invention proposes that both converter...  
WO/2007/137186A2
An interface system prevents operational interference between a vehicle power door and a ramp of an access system by interrupting power to the motors and actuators responsible for operating the door. The interface system includes a relay...  
WO/2007/134605A1
A method is disclosed for starting an electric motor (2), in which the motor (2) is supplied with current (4) via a starting circuit (1) having multiple paths (5, 6, 7), and the current (4) is conducted through various paths (5, 6, 7) on...  
WO/2007/136198A1
An apparatus and method for controlling starting of a motor are disclosed. An exciting coil of a motor is excited by using a controller of an electronic refrigerator without having an extra excitation control circuit, to thereby simplify...  
WO2006111252A8
The invention relates to a method for heat-treating metal work pieces, whereby a cooling gas flow is produced in a vacuum furnace by means of a fan, driven by a three-phase AC motor, in order to quench the work pieces. The aim of the inv...  
WO/2007/125251A1
The invention relates to a motorized system for closing a building, of the roller shutter type with the particular feature that it has a two-phase asynchronous motor which comprises two windings (2; 3) and is combined with a speed-varyin...  
WO/2007/058782A3
A soft starter for a single-phase motor is provided, wherein the single-phase motor includes a main winding, a start winding and a run capacitor, the main winding and the start winding are connected in series with each other and the run ...  
WO/2007/018630A3
An automatic protective shutter system that is controlled by atmospheric and/or human intervention conditions. The shutter consists of a net that can be deployed automatically to cover any opening in a building structure. The protective ...  
WO/2006/116479A3
The present invention is directed to a control strategy for operating a plurality of prune power sources (101-1 to 101-3) during propulsion, idling and braking and is applicable to large systems such as trucks, ships, cranes and locomoti...  
WO/2007/106599A2
Embodiments of the invention provide a control system for a garage door. The control system can include a motor, a pulley, a synchronous drive member, a carriage, and an operator. The pulley can be coupled to and driven by the motor. The...  
WO/2007/074092A3
By this invention, in a motor (1) comprising a control unit (3) and a thermic protector (4) which protects the motor (1) from high temperature and current values, by estimating the state of the thermic protector (4), the startup of the m...  

Matches 451 - 500 out of 11,434