Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 451 - 500 out of 13,532

Document Document Title
WO2006035194A3
A method of starting and apparatus for starting a multiphase electrical machine is disclosed. The aim is to reduce oscillatory pulsation in torque generated by the motor and inrush current that occurs shortly after start-up. The starting...  
WO2005048055A3
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/2006/068482A2
The invention relates to a control circuit for controlling a DC voltage power supply, whereby the control circuit comprises a switching element connected in series to the motor and a bypass switch connected in parallel to the electromoto...  
WO2006039626A9
A single controllable switch (509) drive system for regulating the speed of a two-phase switched reluctance machine (TPSRM) (700) rotor may include a speed control feedback loop (970) component that uses an established speed control sign...  
WO/2006/058574A1
The invention relates to a method for controlling the flow of energy in a drive, and to a drive comprising at least one motor, at least one energy accumulator and at least two consumers and/or accumulators connected to this energy accumu...  
WO/2006/057548A1
The invention relates to a switch circuit for an electric tool, for instance a circular saw, fretsaw, right-angle grinder or a drill. The tool comprises a motor and operating means for selectively connecting the motor to a power source. ...  
WO/2006/056352A1
The invention relates to an electromechanical drive, which is actuated by a current supply and is displaced against a stop in order to be disconnected. According to the invention, once the current supply has ended and the electromechanic...  
WO/2006/048023A1
A drive mechanism has a reversible electric motor, which can be short-circuited to stop the rotation of the motor. Hereby higher precision can be achieved. A magnetic brake has a rotor, which has one or more neutral angular positions rel...  
WO2006039626A3
A single controllable switch (509) drive system for regulating the speed of a two-phase switched reluctance machine (TPSRM) (700) rotor may include a speed control feedback loop (970) component that uses an established speed control sign...  
WO/2006/045379A1
The invention relates to a device for the reliable control of an electromagnetic brake, comprising a brake coil which can cause the brakes to be released, counteracting the spring force of spring elements, when supplied with a current. S...  
WO/2006/040953A1
A motor driving circuit (3) comprises a plurality of pairs of power-supply-side driving transistors (15,16) and ground-side driving transistors (17,18) that drive a coil (9) from a midway point; a driving current detecting part (19) that...  
WO/2006/035194A2
A method of starting and apparatus for starting a multiphase electrical machine is disclosed. The aim is to reduce oscillatory pulsation in torque generated by the motor and inrush current that occurs shortly after start-up. The starting...  
WO/2006/035959A1
A power output apparatus (100) generates a commercial AC voltage (Vac) across neutral points (N1, N2) of first and second motor generators (MG1, MG2). The power output apparatus (100) includes a leakage detecting device (40), and upon de...  
WO/2006/034217A1
A battery-powered vehicle for transporting a mined payload or supplies over the roadways existing in or around an underground mine, includes variable voltage, variable frequency drivers that convert DC voltage from a battery into an AC v...  
WO/2006/034318A1
A method of controlling a power converter (20) of a motor drive system (10) controls the power converter (20) during a first operating mode by applying a current control scheme, which sets power converter commands to control torque curre...  
WO/2006/028861A2
A variable speed electric motor to drive a variable load over a substantially continuous range of speed. The motor has a plurality of winding combinations that may be switched into and out of the motor circuit. A torque controller select...  
WO/2006/023020A1
System for braking either linear or rotary electric motor having no permanent magnets comprising at least one servo amplifier and an electronic circuit for generating a pulsed control signal for controlling the braking of the motor. The ...  
WO/2006/002578A1
A quick brake apparatus includes a bracket, a motor and a bearing base fixed on the bracket, and a shaft which has rotating parts and couples with the bearing base, as well as a transmission mechanism with smaller, greater pulley. Bearin...  
WO/2006/004037A1
An inverter capable of reducing the speed of even an easily magnetically saturable AC electric motor for a short time period without causing any overcurrent. A motor driving frequency is operated with a detected value obtained by passing...  
WO/2005/099081A1
The invention relates to a circuit arrangement and a method for the short-circuit braking of a direct-current motor (M), especially a cooling fan motor for a motor vehicle, which is excited by permanent magnets and can be connected to a ...  
WO/2005/096489A1
An AC motor can be decelerated in as a short time as possible by means of an inverter and the current is controlled below a predetermined value so that the inverter does not stop because of an overcurrent or the AC motor does not fail du...  
WO/2005/096488A1
Disclosed is a drive unit comprising at least one brake and an electric motor that is connected to an output stage by means of supply lines. The brake is supplied from a brake triggering mechanism. In order to supply said brake triggerin...  
WO/2005/090216A1
An elevator controller having an ordinary structure where the generated power in regenerating operation is consumed by a resistor chopper (18) additionally comprises an electric double-layer capacitor (21) connected parallel to a DC capa...  
WO/2005/089257A2
A combined heat and AC power generating system is disclosed having black start capability for the full time, simultaneous production of both electricity and heat. Heat generated within the system is captured and used for heating applicat...  
WO/2005/088827A1
There is provided a motor including magnetic pole means having a plurality of coil strings alternately excited to different poles to which is faced a permanent magnetic pole string having permanent magnetic pole elements of alternately d...  
WO/2005/081396A1
A DC braking method for stopping an induction motor, wherein during a shift from a normal control state to a DC braking state, the torque shock caused by an abrupt change in the output current phase is suppressed below a predetermined va...  
WO/2005/078538A1
A barrier movement operator (10) including a sensing device (110) for generating motor signals representing an operational variable of the motor (106), a position sensor (128, 127) for detecting the rotation of motor (106), a controller ...  
WO/2005/076989A2
A method for energy storage and recovery for load hoisting equipment powered by an induction hoist motor controlled by a first inverter and having a dual inverter controlling a capacitor utilizing rest power such as reverse power generat...  
WO/2005/077702A1
A multi-stage dynamic braking resistor network (23) is provided that includes a plurality of dynamic brake resistors (1 a-d) for dissipating, as heat, regenerative energy inputted onto a system bus (17) by a motor or actuator (19), and a...  
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...  

Matches 451 - 500 out of 13,532