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Matches 501 - 550 out of 13,577

Document Document Title
WO/2005/076453A1
In an electronic system, motor braking is accomplished by applying direct current (DC) voltage, developed across a capacitive element during a run mode operation, across terminals of an alternating current (AC) or an induction motor. Whi...  
WO2005015739A3
One embodiment of the present invention relates to a method for constructing a circuit (11A) for controlling an electromagnetic actuator. Another embodiment of the present invention relates to a method for designing a circuit (11A) for c...  
WO/2005/061304A1
A method for reducing the speed or for stopping an electric motor which can be operated with direct current, particularly a brushless direct current motor, when an error occurs in said electric motor or in electronic or mechanic units co...  
WO/2005/048055A2
A system and method for facilitating patent grant and patent application claims examination; including the functions of automated importing of patent claims, automated parsing of the claims into their hierarchy, and compression/expansion...  
WO/2005/048446A1
Disclosed is a braking method for a synchronous machine (1), wherein rotor windings (u, v, w) of the synchronous machine (1) are short-circuited, optionally with the insertion of at least one brake resistor (18). In order to keep the bra...  
WO/2005/015739A2
One embodiment of the present invention relates to a method for constructing a circuit (11A) for controlling an electromagnetic actuator. Another embodiment of the present invention relates to a method for designing a circuit (11A) for c...  
WO/2005/012028A1
Certain exemplary embodiments can comprise a method comprising: receiving electrical energy from a braking system of a vehicle at a working coil (5600), the vehicle comprising a first wheel drive comprising a first electric motor; and vi...  
WO/2005/010630A1
The invention is related to a soft start device for an asynchronous motor by means of a current limiting element situated between the motor and a power line, a start line with at least one current limiting element, a bypass line with byp...  
WO2003078199A3
A regenerative braking system for an electric vehicle having front and rear wheels, and includes a drive wheel, an actuating device, a regenerative braking control circuit (64)includes a potentiometer or transducer (40) a process sensor ...  
WO2004036755A9
A space vector pulse-width modulator (SVPWM) and a method implemented by the modulator. A precalculation module accepts Ua and Ub modulation indexes and in response thereto, outputs modified Ua and Ub information; a sector finder has a U...  
WO2003045724A3
In an electrically driven automobile, a dynamo-electric generating device(s), (12) is attached to one or more free-running wheels (8, 9) of the vehicle, which are not connected to the power drive of the vehicle. The free-running wheels (...  
WO/2003/097917A1
ABSTRACTA method of controlling a motor-driven washing machine and a control system that controls a motor or any other components of the washing machine are disclosed. The method includes the steps of generating an interruption command f...  
WO/2003/092150A1
In the present invention, several polyphase devices are connected together: an inverter (420), and electrical rotating machine (440), and a resistive load or braking resistor (430). The purpose of the resistive load is to dissipate exces...  
WO/2003/088470A1
The invention relates to an electric driven tool device, especially an electric hand-held tool device, comprising an asynchronous electric motor (2) or a brush-less synchronous electric motor and a computer-controlled motor control devic...  
WO/2003/084045A1
The present invention relates to a propeller drive arrangement for vessels used in water-borne traffic, and specifically to a propeller drive arrangement containing a propulsion unit, and to such an arrangement, which contains a propulsi...  
WO/2003/078199A2
A regenerative braking system for an electric vehicle having front and rear wheels, and includes a drive wheel, an actuating device, a regenerative braking control circuit (64)includes a potentiometer or transducer (40) a process sensor ...  
WO/2003/072944A1
A dynamic brake for a peristaltic pump avoids backlash due to counter rotation. The braking operation (312) is initiated only after a set point has been set to zero and the pump has decelerated below a predefined speed (310). The braking...  
WO/2003/071671A1
The invention relates to a drive system with at least one main motor (HMO) and at least one actuator motor (SM1, SM2). Said drive system comprises a d.c. intermediate circuit (ZWK), in which the main motor, during deceleration in the gen...  
WO2003049256A3
A synchronous alternating current generator incorporates a braking mechanism which comprises a coil (21) providing a predetermined inductance and a predetermined resistance, and switch means (22) for connecting the coil across an output ...  
WO2003028200A3
A method and apparatus for controlling a barrier movement operator comprising a controller (18) that dynamically controls barrier operator braking to electronically slow, stop or reverse the motor in the barrier operator controller. The ...  
WO2003032479A8
The invention relates to a method and a device for monitoring the braking state of brakes (1) that can be actuated electromagnetically. The aim of the invention is to attain a greater degree of accuracy for the determination of the opera...  
WO/2003/052921A1
Disclosed is a method and a circuit arrangement for carrying out a method to protect an electric motor (10) and/or a control circuit (12) thereof from an overload in an emergency operation mode. The inventive method and associated circui...  
WO/2003/049256A2
A synchronous alternating current generator incorporates a braking mechanism which comprises a coil (21) providing a predetermined inductance and a predetermined resistance, and switch means (22) for connecting the coil across an output ...  
WO/2003/045724A2
In an electrically driven automobile, a dynamo-electric generating device(s), (12) is attached to one or more free-running wheels (8, 9) of the vehicle, which are not connected to the power drive of the vehicle. The free-running wheels (...  
WO/2003/043167A1
The invention relates to an electric motor drive for operating an alternating-current motor (10). The electric motor drive comprises a frequency converter (6) for controlling the motor, which frequency converter (6) comprises a rectifier...  
WO/2003/032479A1
The invention relates to a method and a device for monitoring the braking state of brakes (1) that can be actuated electromagnetically. The aim of the invention is to attain a greater degree of accuracy for the determination of the opera...  
WO2002051592A8
A speed controller operates a DC-powered fastener drive assembly to efficiently drive fasteners from a DC power supply (22), thereby achieving a fully portable hand tool. In particular, the speed controller accelerates a flywheel (28) wi...  
WO/2003/028200A2
A method and apparatus for controlling a barrier movement operator comprising a controller (18) that dynamically controls barrier operator braking to electronically slow, stop or reverse the motor in the barrier operator controller. The ...  
WO/2003/019314A1
A synchronous electric motor sensorless control device for driving a synchronous electric motor without using any rotational position measuring device. The sensorless control device comprises a relative position counter (4) for resetting...  
WO/2003/009462A1
The invention relates to a method and a device for shutting down a drive during a mains failure, said method and device comprising a matrix converter (2), several commutation capacitors (C1, C2, C3) on the mains side, a switch unit (10) ...  
WO/2003/007466A1
A DC motor drive circuit for stabilizing the rotation of the DC motor just after power supply and for preventing its reverse rotation just after a stop of power supply. As the circuits for supplying a power source voltage to a DC motor (...  
WO/2002/095926A1
The invention relates to an embodiment and the use of synchronous motors as actuators inside an actuation range which is defined by end stops, for valves and flap valves for example. According to the invention, the phase position and/or ...  
WO/2002/093730A1
A charge and discharge control device, wherein S1 used as a switching element for pressure rising and S2 used as a switching element for pressure lowering are turned on and off alternately with a dead time provided therebetween irrespect...  
WO/2002/091558A1
A system for controlling a synchronous motor, comprising a current sensor for measuring the electric current of a synchronous motor; a coordinate transformer for coordinate-transforming the electric current measured by the current sensor...  
WO/2002/081153A1
The invention relates to a hand-held machine tool, comprising an electric motor (12) mounted in a housing (10) via which a tool bit (16) disposed in a tool holder (14) can be rotatably driven, and a protective device (18) by which a char...  
WO/2002/082613A1
When abnormal current due to jamming is detected through motor current (ID), the motor current (ID) performs an operation in which an ON/OFF operation and a continuous ON operation are repeated, so that increment of the motor current (ID...  
WO2002050618A3
A power generation system is disclosed having several embodiments such as in one embodiment, the power generation system includes a fuel source to provide fuel, a turbogenerator (200), coupled to the fuel source, to generate AC power, an...  
WO/2002/051591A1
A control module (18) advantageously reduces cost and enhances reliability, design flexibility, ease of assembly, and performance of a flywheel operated hand tool (10). The control module (18) includes a thin film printed circuit with no...  
WO/2002/051592A1
A speed controller operates a DC-powered fastener drive assembly to efficiently drive fasteners from a DC power supply (22), thereby achieving a fully portable hand tool. In particular, the speed controller accelerates a flywheel (28) wi...  
WO/2002/050618A2
A power generation system is disclosed having several embodiments such as in one embodiment, the power generation system includes a fuel source to provide fuel, a turbogenerator (200), coupled to the fuel source, to generate AC power, an...  
WO/2002/041485A1
The present invention discloses devices and methods for improved starting and stopping of rotary motors. A rotary electrical machine (3) is supplied with a voltage from a voltage supply (10). The magnitude of a phase current is measured....  
WO/2002/037662A1
The invention relates to the circuit arrangement of an electromotor comprising two terminals, in which the electromotor can be actuated for operation in both rotational directions. When no current is supplied to the electromotor, one of ...  
WO2001043270A3
The invention relates to a drive system for driving a set of machines (2, 3, 4) that are each provided with a rectifier (6). According to the inventive drive system, the inputs (7) to the control devices (8) of the drive motors of the ma...  
WO/2001/095474A1
The invention relates to a method for determining the position of an element driven by the direct current motor within a predetermined displacement trajectory between two block positions, by evaluating the current fluctuations contained ...  
WO/2001/086799A1
The invention relates to a circuit arrangement for guaranteeing the defined switching-off behaviour of synchronous servomotors. According to the invention, the phase position of the voltage on the two motor coils (2.1) is measured and th...  
WO/2001/073913A1
The invention concerns a device for stopping the motor when the load on the motor exceeds a predetermined value. It comprises means (D1, DZ, R1, R2) transforming the voltage variation at the phase-shifting capacitor terminals correspondi...  
WO/2001/071902A1
The invention relates to a brake module for an asynchronous motor. The inventive module is especially used in a circular saw. The aim of the invention is to obtain braking that is as smooth and silent as possible regardless of the moment...  
WO/2001/069747A1
The invention relates to a method for monitoring and influencing an electric motor, in particular, arranged on a displaceable object on a motor vehicle, such as a window or sunroof. The aim of the invention is to resolve the technical pr...  
WO/2001/043270A2
The invention relates to a drive system for driving a set of machines (2, 3, 4) that are each provided with a rectifier (6). According to the inventive drive system, the inputs (7) to the control devices (8) of the drive motors of the ma...  
WO/2001/039187A1
When quick deceleration is not required, a deceleration method with a small power consumption can be selected. Even when a disk is required to be stopped during decelerating the disk by the method, the disk can be stopped promptly and re...  

Matches 501 - 550 out of 13,577