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Matches 401 - 450 out of 13,577

Document Document Title
WO/2008/046953A3
The object of the invention is a synchronous machine, which is controllable by means of a frequency converter connected to it. The synchronous machine comprises a stator winding, which comprises between the synchronous machine's two term...  
WO/2008/064716A1
The invention relates to a circuit arrangement for recirculating the energy produced during the braking of electric motors into a supply system. The object of the invention is to implement the feeding of the energy that can be obtained w...  
WO/2008/004177A3
The invention is directed to a method for controlling a deceleration process of a DC motor (20), wherein the DC motor (20) is driven by a bridge driver (18) coupled to a power supply (12) intended to provide a supply voltage VDD at a pow...  
WO/2008/058214A2
A drapery master carrier for a drapery electric drive system is provided having a built-in wireless transmitter and a sensor to determine whether a manual pull is being applied to the drapes. The sensor is operatively connected to or inc...  
WO/2008/052695A1
The invention relates to a drive and brake system of a rail vehicle or a combination of rail vehicles, comprising a traction drive (1) for driving and for generative braking, at least one permanent-field synchronous motor (6) and a tract...  
WO/2008/004178A3
The invention is directed to a method for controlling a deceleration process of a DC motor (20), wherein the DC motor (20) is driven by a bridge driver (18) coupled to a power supply (12) intended to provide a supply voltage VDD at a pow...  
WO/2008/052696A1
The invention relates to a method for the driving and generative braking of a rail vehicle or a combination of rail vehicles comprising a traction drive (1), at least one permanent-field synchronous motor (6) and a traction current conve...  
WO/2008/052694A1
The invention relates to a traction drive (1) for the driving and generative braking of a rail vehicle or a combination of rail vehicles, at least one permanent-field synchronous motor (6) and a traction current converter (4) being assoc...  
WO/2008/052693A1
The invention relates to a traction drive (1) for the driving and generative braking of a rail vehicle or a combination of rail vehicles, a permanent-field synchronous motor (6a, 6b) and a traction current converter (4a, 4b) being respec...  
WO/2008/052388A1
A control method of electromotor comprises the following steps: setting an alternating axis target current according to the rotor angle velocity of the motor and setting a direct axis target current according to the torque of the motor; ...  
WO/2008/049664A1
The invention relates to a method for identification of the failure of an electric motor (3) which can be switched on and off by means of a switch (1). In order to identify motor failure, the motor (3) is switched off briefly during oper...  
WO/2008/050624A1
When stopping operation of an electric power steering device, a motor relay maintains the ON state even after a power supply relay is set to the OFF state. A drive control unit performs the same processing as during motor rotation after ...  
WO/2008/049958A2
The object of the invention is an arrangement in a synchronous machine, which synchronous machine contains n-phased winding (U,V,W) and has constantly operating magnetisation means. According to the invention, switching means have been f...  
WO/2008/046953A2
The object of the invention is a synchronous machine, which is controllable by means of a frequency converter connected to it. The synchronous machine comprises a stator winding, which comprises between the synchronous machine's two term...  
WO/2008/046885A2
The invention relates to a method for controlling an electric motor by means of a softstarter. The present invention is also concerned with a softstarter device for control of electric motors. According to the invention, the motor torque...  
WO/2008/037799A1
A robot comprising: at least two parts (1, 2, 3) movably arranged in relation to each other with at least one degree of freedom; drive means (4, 5) arranged to accomplish at least two separate movements between said parts (1, 2, 3); at l...  
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/2008/031915A1
The invention relates to a method and an arrangement for braking a synchronous motor (4) used with a frequency converter (2). The braking current of the motor (4) is controlled by connecting only the negative changeover contacts (10) of ...  
WO/2008/009349A3
A coil, in particular for electromagnetically controlled brakes or clutches, has two or more part-windings and associated taps. A first part-winding comprises a winding wire having a first diameter, and a second part-winding comprises a ...  
WO/2008/027867A2
A solid state reversing DC motor starter that is testable on-line and satisfies the requirements for nuclear safety grade equipment. The motor starter employs a bridge of solid state switches which connect the polarity of the motor windi...  
WO/2008/002344A3
An electric drivetrain (10) for a mobile machine (18) is disclosed. The electric drivetrain has at least one power consuming device (36-40), a sensor (54-58) associated with the at least one power consuming device, and a controller (62) ...  
WO/2008/024068A1
A drive system for operation of a tap changer for voltage regulation of a transformer on load comprises an electric motor (20) connectible to a movable part of a said tap changer for moving this for carrying out a tap change operation. T...  
WO/2006/068482A3
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...  
WO/2008/009349A2
A coil, in particular for electromagnetically controlled brakes or clutches, has two or more part-windings and associated taps. A first part-winding comprises a winding wire having a first diameter, and a second part-winding comprises a ...  
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/2008/007541A1
A servo motor monitoring device comprises a magnetic pole position calculation means (20), a current position signal input means (30), and a monitoring means (40). The magnetic pole position calculation means retrieves the magnetic pole ...  
WO/2008/007120A2
An electric motor includes one or more separate coil sets arranged to produce a magnetic field of the motor. The electric motor also includes a plurality of control devices coupled to respective sub-sets of coils for current control. A s...  
WO/2008/004177A2
The invention is directed to a method for controlling a deceleration process of a DC motor (20), wherein the DC motor (20) is driven by a bridge driver (18) coupled to a power supply (12) intended to provide a supply voltage VDD at a pow...  
WO/2008/004178A2
The invention is directed to a method for controlling a deceleration process of a DC motor (20), wherein the DC motor (20) is driven by a bridge driver (18) coupled to a power supply (12) intended to provide a supply voltage VDD at a pow...  
WO/2008/001450A1
When connecting a plurality of regenerative braking devices to a power supply device such as an inverter device, even if operations levels of the respective devices have parts tolerances, it is possible to uniformly operate the respectiv...  
WO/2007/145351A1
While charging an accumulation device from a commercial power source, the power from the commercial power source is given to each of the neutral points of a first and a second motor generator. A rotation suppression control unit (222) de...  
WO/2007/143998A1
An actuator comprising a reversible electric motor, which over a gearing, drives an activation element which can move back and forth. The activation element is of the non-self-locking type. Furthermore the motor and gearing are of a non ...  
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/2007/134558A1
The invention relates to an electrical drive unit having an electric motor (1) and a brake for producing a mechanical braking torque. In order to make controlled mechanical braking of the electric motor (1) possible with as little comple...  
WO/2007/121889A1
The invention relates to a control system for a permanent-field electric motor (1) and corresponding method. When a function computer (3) and/or a monitoring computer (4) recognises an error in the control system, the electric motor (1) ...  
WO/2007/118576A1
A circuit for operating a coil of an electrically released safety brake to connect to alternating current supplies with different operating voltages (preferably mono-phase) comprising: a rectifier circuit connected to the input terminals...  
WO/2007/023061A3
The invention relates to a pulse resistor for a frequency converter in the higher voltage and capacity range. The inventive pulse resistor is characterized by comprising at least two bipolar subsystems (24) and a resistor element (14), s...  
WO/2007/101745A1
The invention relates to a diesel-electric drive system comprising a permanently excited synchronous generator (4), which is mechanically coupled to a diesel motor (2) on the rotor side and has an electrical connection to a voltage link ...  
WO/2007/099913A1
An elevator control device converts an AC power into a DC power by a rectifier (3), converts it into AC power by an inverter (5), and supplied the AC power via a power line (10) to field windings (32R, 32S, 32T) of a motor (16) synchroni...  
WO/2006/078306A3
Kinematic control of an electronic positioner and its associated actuator is effected through a control algorithm that delivers energy to the actuator based on observed motion produced by a previous delivery of energy. The algorithm achi...  
WO/2007/085566A1
The invention relates to a process using a pulse-width modulated inverter (2) for switching off an electrical machine (1) in the event of a malfunction. Undesirable side effects caused by switching off the electrical machine can be minim...  
WO/2007/064381A3
A system and a method for supplying electrical energy to high-power vehicle braking resistors to generate heat for supplemental heating. Supplemental heat is transferred from the braking resistors to a desired use by means of circulating...  
WO/2007/079950A1
The invention relates to a method for testing the brake function of a robot drive (10), wherein the robot drive is operated in a position-controlled manner. The brake is actuated during the running of the robot drive. After a predetermin...  
WO/2007/049810A1
In a system for driving an AC motor in which motor current is feedback-controlled, normally, a motor current instruction is generated according to a torque instruction value on the optimal efficiency characteristic line (CL0) so as to se...  
WO/2006/106530A3
The present invention provides an S SRM (switched reluctance machine), which supports one or more phases and each phase comprises a stator, a rotor and coils. The stator is hollow, cylindrical and comprises stator poles extending inwards...  
WO/2007/042732A1
The invention concerns an electromechanical system (1) designed to be connected to a power grid (7), comprising: an electrical machine (2) capable of operating as a stand-alone power generator, including a rotary shaft, and a switching s...  
WO/2007/039377A1
The invention relates to a control system for a permanently excited electric motor, comprising at least one phase. Said system comprises a first half-bridge arrangement for each phase of the electric motor. The control system comprises a...  
WO/2006/088821A3
A circuit for protecting against controller failure wherein the controller provides control signals for controlling a DC to AC inverter fed by a DC bus and driving a permanent magnet motor, the circuit comprising a first circuit for moni...  
WO/2006/026682A3
Systems, methods, apparatus, computer readable medium and propagated signals are provided for controlling the position, orientation, movement, configuration and/or operation of one or more window coverings, doors, vanes, filters or other...  
WO/2005/076989A3
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...  

Matches 401 - 450 out of 13,577