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Patent Searching and Data


Matches 451 - 500 out of 9,145

Document Document Title
WO2005001591A8
Reactive power (VAR) consumption in a power plant or facility having synchronous machines is adaptively controlled in an automated manner. Electrical parameters of the plant are dynamically monitored during plant operation, and the overa...  
WO/2005/019946A2
System for control of brush DC motors, with reversible operation, based on the determination of the angular or linear, absolute or relative position of the mobile device (2) moved by the motor (1) through direct and continous reading of ...  
WO/2005/015729A1
The invention relates to a device and method for operating at least two electric motors (10, 12), which are subjected to the action of pulse-width modulated signals (18, 20) by means of a common control circuit (30) via a respective outp...  
WO2003083611A3
An electronic control system (100), such as a field oriented control system, is provided, including a device to be controlled (165); an application control arrangement (155) including a plurality of functional blocks configured to perfor...  
WO/2005/006536A1
A circuit for parallel driving synchronized motors, wherein an activating/driving circuit is efficiently utilized and wherein a plurality of synchronized motors can be parallel driven in synchronism regardless of differences in number of...  
WO/2005/001591A1
Reactive power (VAR) consumption in a power plant or facility having synchronous machines is adaptively controlled in an automated manner. Electrical parameters of the plant are dynamically monitored during plant operation, and the overa...  
WO/2005/002038A1
A motor drive system comprising mechanical power generators (1-5) outputting a mechanical power by burning liquid or gas fuel, a plurality of generators (6-10) being driven through the mechanical power generators to generate an AC voltag...  
WO/2004/097538A1
Disclosed are a method and a device for controlling a production unit in a production facility, controlling referring to controlling and monitoring the rotational speeds or angles of rotation of individual drive units (20-22) such that t...  
WO2004082126A8
A novel system for adaptively controlling an electric vehicle to maintain desired speed under variable driving conditions. The system includes a control circuit for producing a control signal to control an electric motor of the vehicle. ...  
WO/2004/095683A1
There is provided a twin synchronization method capable of realizing a high-speed and highly accurate operation for a machine having a gantry-shaped structure. The twin synchronization control method synchronizes operation of two motors ...  
WO/2004/093287A1
A variable speed drive control system operates a variable speed drive to power a first load from a power source simultaneously powering a second load. An AC reactive power is monitored which may comprise or consist of an AC reactive powe...  
WO/2004/088833A1
A system for driving synchronous motors (10) with built-in permanent magnets connected in parallel and operated by one inverter (9), characterized in that each synchronous motor (10) comprises a winding changing device (14) composed of a...  
WO/2004/082126A1
A novel system for adaptively controlling an electric vehicle to maintain desired speed under variable driving conditions. The system includes a control circuit for producing a control signal to control an electric motor of the vehicle. ...  
WO/2004/082121A1
The invention relates to a method for controlling a first fan motor with a first pulse-width modulation signal having a first pulse duty factor and for controlling a second fan motor with a second pulse-width modulation signal having a s...  
WO2004045059A3
A permanent magnet motor includes salient pole stator cores. The poles and/or linking portions therebetween are wound with a plurality of winding coil sets. Mutually exclusive speed ranges are established between startup and a maximum sp...  
WO/2004/055386A1
A driving unit for working machines such as hydraulic shovels comprises a power generator (32) driven by an engine (31), and an electricity storage means (33) for storing the power generated by the power generator (32). An power motor (4...  
WO/2004/055960A1
A rotating electrical machine, such as an aircraft starter-generator, includes an exciter that has its stator windings divided into a number of sections. A plurality of switches are electrically coupled to the exciter stator winding sect...  
WO/2004/045059A2
A permanent magnet motor includes salient pole stator cores. The poles and/or linking portions therebetween are wound with a plurality of winding coil sets. Mutually exclusive speed ranges are established between startup and a maximum sp...  
WO2004014767A3
Method and device for detecting the occurrence of a malfunction upon movement of an element (7) by means of a driving system. While the element is being moved, a difference (curve A) between a predetermined, desired value and an actual v...  
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/2004/024396A1
A combustion power framing tool (10) the invention has a nosepiece (26) for driving fasteners (20), a housing (14) and a combustion chamber (16) that produces primary power held within the housing (14). A fastener supply (36), such as a ...  
WO/2004/014767A2
Method and device for detecting the occurrence of a malfunction upon movement of an element (7) by means of a driving system. While the element is being moved, a difference (curve A) between a predetermined, desired value and an actual v...  
WO/2004/004112A1
The invention relates to a method for controlling an oscillating electric motor of a small electrical appliance, according to which electricity is at least temporarily fed to a coil (5) in order to create a magnetic field that originates...  
WO/2004/001952A1
Individual current control units are provided to respective motor winding systems of a multi-winding motor that constitutes a hoisting machine (6) for lifting/lowering a cage (8) to give the same torque instruction, and Ѳa and Ѳb obtai...  
WO2003029623A3
Systems, methods, and apparatus, consistent with principles of the present invention, allow an unmodified device, for example, dc starter motor (230), that normally operates at a first voltage (108) to function in an electrical system pr...  
WO/2003/097410A1
A controller of the side mirror of an automobile arranged such that a noise pulse signal is generated after ending generation of a pulse signal through inertial rotation of one motor by providing a specified time difference in the upward...  
WO/2003/087634A1
The invention relates to a method for determining the moving direction of a motor, especially an electric motor of a transmission actuating system for gear selection and/or shifting, whereby at least one signal of the motor is detected. ...  
WO/2003/085818A1
The invention relates to a converter system and a method, said system comprising at least one supply module VM providing a unipolar intermediate voltage, at least one drive module AM which can be fed by the intermediate voltage and respe...  
WO/2003/083611A2
An electronic control system (100), such as a field oriented control system, is provided, including a device to be controlled (165); an application control arrangement (155) including a plurality of functional blocks configured to perfor...  
WO2003047083A3
The invention relates to a control device for operating a load circuit comprising at least one electric motor. The control device has a control stage, which generates a pulse-width modulated control signal, and has a power stage, which s...  
WO/2003/084032A1
In an electrical rotating machine, two rotors (7, 8) are provided, each rotor (7, 8) has a plurality of permanent magnets (31, 32) along its peripheral direction thereof, arranged coaxially with the other rotor, and is driven by means of...  
WO/2003/079533A1
A control constant adjusting apparatus for use in a control device of a robot, a machining apparatus, and the like. The control constant adjusting apparatus includes a speed control unit (12), an estimation unit (13), an identification u...  
WO/2003/077412A1
A N pulse variable frequency drive for driving two or more motors that is the combination of two or more variable frequency drives with each drive driving an associated one of the two motors. One application is a decanter centrifuge whic...  
WO/2003/072388A1
A control system for individually controlling power from a single voltage source to a plurality of motors is described. A chopper circuit, in conjunction with the control system, generates drive−pulses, which operates the IGBT switchin...  
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...  
WO/2003/065565A1
A rotational speed control system, comprising a plurality of motor drivers for driving a plurality of motors at a same rotational speed without relying upon the quantity of the motor drivers and the characteristics of the motor drivers, ...  
WO/2003/056694A1
An electrical load apparatus (100) comprises a DC power source (B), voltage sensors (10, 20), system relays (SR1, SR2), capacitors (11, 13), DC&sol DC converter (12), an inverter (14), a current sensor (24), rotation sensor (25), control...  
WO/2003/056695A1
A cord tension control apparatus includes a brushless motor (M) generating counter electromotive force, a rectifier circuit (2) connected to a winding of the brushless motor (M), and a constant current circuit (3) connected to the rectif...  
WO/2003/045160A1
A process for preparing a chewing gum tablet includes cooling a chewing gum composition to a temperature at which the gum composition is brittle, and grinding the cooled, brittle gum composition to form a chewing gum powder. The gum comp...  
WO/2003/047083A2
The invention relates to a control device for operating a load circuit comprising at least one electric motor. The control device has a control stage, which generates a pulse-width modulated control signal, and has a power stage, which s...  
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/2003/033786A1
According to one embodiment of the invention, a ring spinning frame having a plurality of drawing devices, each of which has long drawing rollers (20), can be produced. At least one drawing roller (20) can have several drive motors (12),...  
WO/2003/029623A2
Systems, methods, and apparatus, consistent with principles of the present invention, allow an unmodified device, for example, dc starter motor (230), that normally operates at a first voltage (108) to function in an electrical system pr...  
WO/2003/026935A1
The invention relates to a wiper arrangement for motor vehicles, especially for car windscreens, comprising a first wiper arm, a main drive motor (12) which is associated with said arm and is used to produced a defined wiping movement of...  
WO2002003526A3
A control for DC motors, in particular actuators driven by a DC motor for adjustment of furniture, such as tables, beds, chairs, etc. inlcudes a pseudomotor which is capable of supplying a voltage that corresponds to the motor speed on t...  
WO/2003/003558A1
A method and an arrangement for stopping sectional drive controllably in connection with a fault situation in the supplying mains, the sectional drive comprising a plurality of inverters (4) which are supplied by a DC intermediate circui...  
WO/2002/082629A1
The invention relates to a gearless direct drive exhibiting high inertia that is intended for transportation purposes and based on high-poled three-phase A.C. motors. A drive group comprising a three-phase current main motor (1)with a hi...  
WO2001035520A8
Device and method for controlling supply of current and static capacitance to compressors, the device including a control signal providing part for providing control signals for controlling currents and static capacitances to be supplied...  
WO2002046002A3
The invention regards an electric circuit (200; 300;400;500) comprising a first electronic control circuit (201; 301) controlling the operation of a first electric load (102) to operate alternatively in a push mode or in a pull mode. To ...  
WO2002045245A3
The invention provides an XYZ-axes table with a linear motor. The XYZ-axes table has a base, a plurality of linear guiding apparatuses, a stage, an X-axis drive linear motor, a Y-axis drive linear motor, and a Z-axis drive linear motor. ...  

Matches 451 - 500 out of 9,145