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Patent Searching and Data


Matches 351 - 400 out of 13,506

Document Document Title
WO/2009/024168A1
An apparatus for monitoring an electromagnetic brake comprises a brake monitoring means (1) adapted for being coupled to an electric supply (6) for an electromagnetic brake having braking means and comprising an electrical coil (22) with...  
WO/2009/025060A1
An operation controller for electric equipment excellent in operability without enlarging a hand-operated switch box. The operation controller operates and stops the electric equipment (10) through control circuits (21,22) by switch oper...  
WO/2009/016267A1
The invention presents a control arrangement of an electric motor (2) used with a frequency converter (1 ) as well as a method for controlling an electric motor used with a frequency converter. In the invention the frequency converter is...  
WO/2009/013388A1
The invention relates to a switch arrangement of an electric motor drive (1 ). The electric motor drive comprises safety switches (3) determined by the safety of the drive, a controlled mechanical brake (4), a power supply circuit (5) of...  
WO/2008/148470A3
Disclosed is a circuit for operating a coil of an electrically liftable safety brake, to be connected to AC inputs having different (preferably single-phase) operating voltages. Said circuit comprises: a rectifier circuit which is connec...  
WO/2008/155445A1
The power control of a transport system comprises an electric motor (2) for moving the transport appliance as well as a power supply appliance (3) of the motor, which comprises an intermediate circuit (4,5). The power supply appliance of...  
WO/2008/155446A1
The power control of a transport system comprises an electric motor for moving the transport appliance as well as a power supply appliance of the motor, which comprises an intermediate circuit. The power supply appliance of the motor is ...  
WO/2008/148470A2
Disclosed is a circuit for operating a coil of an electrically liftable safety brake, to be connected to AC inputs having different (preferably single-phase) operating voltages. Said circuit comprises: a rectifier circuit which is connec...  
WO/2008/146372A1
A vehicle steering gear has a steering mechanism for steering steered wheels by a steering wheel operated by the driver and a sub steering angle superimposition mechanism controllable electrically. A target sub steering angle is set acco...  
WO/2008/135327A1
The invention relates to a method for correcting errors in an electrical machine of a hybrid drive, comprising the following steps: detection of whether at least one operation parameter of the electrical machine exceeds an assigned opera...  
WO/2008/136836A2
A system and a method that provides fuel cell and energy storage hybrid-electric propulsion and control for a heavy-duty vehicle over 10,000 pounds GVWR. Power output is supplied from a fuel cell system to a high-power intermediate DC bu...  
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/2008/027867A3
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/2008/122213A1
A control method and a control device of engines are introduced. During the process of engines controlling, the control unit does the adaptive learning for the actual target value of the feedback of different aims, and following the dyna...  
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/2008/070730A3
A circuit for varying the speed of a variable speed motor having a power source to provide a voltage to the motor and a diode as a means to provide a voltage drop within the circuit that is substantially independent of the amount of curr...  
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/2008/114026A1
A braking control system suitable for limiting or preventing rotation of a turbine of a wind powered generator, comprising sensing means, operable to sense the short circuit output current of the generator, wich is proportional to the st...  
WO/2008/114608A1
A hoist capable of high frequency operation by efficiently releasing heat of an inverter, which is incorporated in a hoist body, to ambient air by using a simple structure. The hoist has a load lifting and lowering electric motor and a r...  
WO/2008/109328A1
A single low side power transistor switch is used to efficiently control a brushed motor in a. forward rotational direction. A boost voltage power supply is used to supply voltage to the brushed motor in a reverse rotational direction or...  
WO/2008/017629A3
The invention relates to a diesel-electric drive system with a generator (4) that is mechanically connected to a diesel motor (2) on the rotor side and that is linked on the stator side to a voltage source inverter (34) with a self-commu...  
WO/2008/007120A3
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/2008/091758A2
The present invention comprises a gear motor assembly and control system for use with ice crushers and the other similar devices. The assembly utilizes a novel reversing circuit which allows the use of a bidirectional DC powered gear mot...  
WO/2008/049958A3
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/2008/046953A3
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 ...  

Matches 351 - 400 out of 13,506