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Patent Searching and Data


Matches 251 - 300 out of 13,749

Document Document Title
WO/2015/020838A1
A CT system includes a gantry having a rotatable base and having an opening for receiving an object to be scanned, and an AC-to-DC converter coupleable to a 3-phase AC facility power, and coupled through a DC bus to a gantry motor to rot...  
WO/2015/008486A1
Provided is a washing machine comprising: a drum (106) for storing clothes (105); and a motor (109) equipped with permanent magnets (100, 101), and three-phase windings (102, 103, 104) for driving the drum (106). The washing machine furt...  
WO/2015/000930A1
The invention relates to a method for actuating a multiphase frequency converter for actuating an electric machine 8, said electric machine 8 being suitable as a traction drive of a vehicle. The frequency converter comprises power switch...  
WO/2015/000669A1
The description covers a method for controlling a multi-phase output stage of a permanent magnet electric machine (6), wherein the electric machine (6) is used to drive a motor vehicle, wherein the output stage comprises power switch pai...  
WO/2014/204551A2
A bidirectional low voltage power supply (LVPS) for providing power to motor drive electronics. The bidirectional LVPS includes two simple, discrete converters. A first converter is used to provide power to an output and the second conve...  
WO/2014/185123A1
The purpose of the present invention is to provide a motor control device for controlling a motor drive device which employs a regeneration resistance scheme, said motor control device allowing for accurate measurement of power consumpti...  
WO/2014/185278A1
An electric brake device in which, if a brake system stops while an electric brake is in operation, excessive retraction of friction pads can be prevented without consuming electrical power. When using an electric motor (12) to reverse a...  
WO/2014/181349A2
The present invention relates to a wind turbine with braking system for generating power at rated wind speed and stopping the turbine at predetermined conditions by means of selected number of generators (1). The wind turbine with brakin...  
WO/2014/182291A1
Embodiments are directed to charging a lead acid battery, providing by the battery a majority of energy required by a load and providing a remainder of the energy required by the load via an energy storage device, and capturing by the ba...  
WO/2014/174865A1
Since rotational energy stemming from the inertial moment of a load and an induction motor when the induction motor decelerates is generated at a power conversion device, there is a need for a semiconductor switch for regenerated energy ...  
WO/2014/174633A1
A motor with a brake comprises: a motor body; an electromagnetic brake for braking the motor body; a DC voltage control circuit receiving a DC power supply voltage and outputting a DC voltage to the electromagnetic brake; and a motor hou...  
WO/2014/090830A3
The invention relates to a regulating body for a wristwatch, comprising: a generator provided with a rotor (12) and a stator with M+N coils (10, 10'), M being a whole number higher than, or equal to, 1; and an electronic regulating circu...  
WO/2014/149808A1
A window shade (60) having a power actuation system. The window shade includes a fixed member (63); a rotatable member (62) that is rotatable relative to the fixed member; a reversible motor (64) mounted to the fixed member, wherein the ...  
WO/2014/141527A1
The voltage amplification factor during rapid deceleration control for a motor is set to a value obtained by adding a voltage amplification factor calculated using a prescribed function and a low pass filter with reference to the voltage...  
WO/2013/124538A8
The invention relates to the monitoring of a brake (400, 500). The brake (400, 500) comprises first and second braking surfaces (204, 206) and magnetizing means (210) arranged to move the braking surfaces (204, 206) to an open state, in ...  
WO/2014/130201A1
An electric motor controller is configured to be coupled to an electric motor. The controller is also configured to control the electric motor to produce torque when direct current (DC) link voltage has a 100% voltage ripple, or when dir...  
WO/2014/125604A1
A motor drive circuit comprises: a CPU for controlling the operation of a bridge circuit by controlling the control voltage output from a pre-driver; a voltage detection circuit for detecting the voltage of a battery on the basis of the ...  
WO/2014/123713A2
A system or method controlling a variable speed drive based on PWM techniques, wherein a first PWM method is used when the input current is less than a predetermined threshold value, for higher efficiency and lower total harmonic distort...  
WO/2014/054031A3
A wind power turbine for producing and feeding electric energy to an electric power grid (9); the wind power turbine (1) having : a blade assembly (5); at least one electric machine (6) connected to the blade assembly (5) to generate ele...  
WO/2014/096113A2
The invention relates to a method for controlling a sluice drive (200) for a sluice (100), in particular for a roller-type sluice, preferably in a water power plant (1000), wherein the drive has an electrical machine, in particular an as...  
WO/2014/091602A1
This motor control device is provided with: an inverter circuit that has a plurality of P-side switching elements and a plurality of N-side switching elements and that drives a motor via a plurality of motor terminals; a first dynamic br...  
WO/2014/089255A2
Embodiments of methods of controlling a motor for driving a load are disclosed herein. Exemplary methods include providing energy to a motor, sensing a parameter indicative of current. Determining the end of an inrush current and a start...  
WO/2014/075742A1
The invention relates to a switching device (1) with a control apparatus (2), a supply connection (7), a power supply (19) and a first flow path of current (15), wherein the supply connection (7) is connected to the power supply (19) and...  
WO/2014/075743A1
The invention relates to a switching device (1) with a control apparatus (2), a supply connection (7), a power supply (19) and a first flow path of current (15) which comprises a first electromechanical switch (11) and a parallel circuit...  
WO/2014/053704A1
Monitoring a brake (402) that comprises first (202,204) and second (206,204) braking surfaces and magnetizing means (210) that, in response to the electric current supplied to them, are arranged to generate a magnetic field that is arran...  
WO/2014/054031A2
A wind power turbine for producing and feeding electric energy to an electric power grid (9); the wind power turbine (1) having : a blade assembly (5); at least one electric machine (6) connected to the blade assembly (5) to generate ele...  
WO/2013/137480A3
An electric tool for driving a tip tool, the electric tool includes: a removable battery; the brushless motor configured to generate a driving force for driving the tip tool; an inverter circuit configured to supply drive power from the ...  
WO/2014/045728A1
In the present invention, so-called a no-excitation-activation type electromagnetic brake control device is equipped with: a first brake control circuit (201) that has a first arithmetic unit (121) for performing arithmetic processing in...  
WO/2014/037143A1
The invention relates to an operating state circuit for driving an inverter with half-bridges having respective switching devices, which inverter supplies an n-phase supply voltage to an n-phase electrical machine via phase connections a...  
WO/2014/032718A1
The invention relates to a switchgear (1) which comprises a control unit (2), a supply connection (7) and a first current path (15), the first current path (15) comprising a first electromechanical switch (11) and, connected in series to...  
WO/2013/113051A3
A method for monitoring the short-circuiting switching device of a three-phase motor (3) for the drive for vehicles, which switching device is fed from a DC voltage source (1) via a controlled converter (2), wherein the short-circuiting ...  
WO/2013/156571A3
The invention relates to a controller of a brushless direct-current motor having an upstream current converter, which has a half bridge having a pair of switching means (S1, S4, S2, S5, S3, S6) for each phase winding of the motor (M), th...  
WO/2013/149780A3
The invention relates to a method for electrodynamic braking of a universal motor, comprising the following steps during a braking operation: permanent determination of a speed of the universal motor; temporary, periodic short-circuiting...  
WO/2013/152900A3
The invention relates to an improved electrodynamic method for the braking of a universal motor. By means of assigning ignition angles of an electronic semi-conductor switch that short-circuits the armature of the universal motor during ...  
WO/2013/083139A3
The present invention relates to a method for controlled shutdown of wind turbines. The method involves using a generator side converter, and optionally a DC chopper, as a generator load during controlled shutdown. In this way gearbox ba...  
WO/2013/192142A1
A power system with regeneration may include an electric power storage element, an electric motor in electrical communication with the electric power storage element, a rotatable shaft operably coupled to the electric motor for rotation ...  
WO/2013/186065A1
The invention relates to a method for estimating the value of a braking resistor (Rf) used in a power converter connected to an electric motor (M). The power converter comprises a braking cell (CelF) connected to the first power supply l...  
WO/2012/146250A3
A variable speed wind turbine is provided. The variable speed wind turbine comprises a generator, a power converter for converting at least a portion of electrical power generated by the generator, the power converter comprising a genera...  
WO/2013/049302A3
Braking current generated by an electrical motor on mining equipment during a retard interval is switched through one or more grid resistors that are liquid cooled. Under low ambient temperatures, a heating current can be switched throug...  
WO/2013/122266A3
An electric working machine including: a motor; a driving unit configured to be driven by the motor; a trigger switch configured to allow rotation of the motor; a power supply unit configured to supply electric power to the motor; and a ...  
WO/2012/035385A3
An inverter apparatus basically includes an inverter (3), a rotational speed detecting component (12, 26, 27) and a control component (9). The inverter (3) includes a plurality of pairs of switching elements (Ql to Q6). The control compo...  
WO/2013/013678A3
A power dissipating arrangement for dissipating power from a generator in a wind turbine is provided. The generator comprises a plurality of output terminals corresponding to a multi-phase output. The power dissipating arrangement compri...  
WO/2013/076161A3
An actuator comprising at least one multiphase motor (100) having phases (101) facing a rotor (102) secured to an outlet shaft associated with a braking member (2) and provided with means for connecting it to a movable element that is to...  
WO/2013/149780A2
The invention relates to a method for electrodynamic braking of a universal motor, comprising the following steps during a braking operation: permanent determination of a speed of the universal motor; temporary, periodic short-circuiting...  
WO/2013/149710A1
The invention relates to an electric damper (10) for damping the relative motion between a first and a second mass, comprising a generator (26) that can be driven by the mass motion. The invention is characterized in that, in addition to...  
WO/2013/147011A1
This invention addresses the problem of providing a conveyor device and a zone controller in which regenerative current can be effectively utilized and a stable actuation can be ensured. The interior of the zone controller (10) is divide...  
WO/2013/145486A1
When current flowing through all electrical terminals of an alternating-current electric motor (21) is near zero, an operation is performed to set the electrical terminals of the alternating-current electric motor (21) in an open state, ...  
WO/2013/144439A1
The invention relates to a method and apparatus for a pressing process, such as for use of a waste compactor or the like, wherein a pressing force needed in the pressing process is being produced by action of an electric press motor (1 )...  
WO/2013/137480A2
An electric tool for driving a tip tool, the electric tool includes: a removable battery; the brushless motor configured to generate a driving force for driving the tip tool; an inverter circuit configured to supply drive power from the ...  
WO/2012/156251A3
The invention relates to a device for managing electric braking power (1), which device comprises a continuous bus (10), said continuous bus including: a connection pole (12) connecting to an electric traction machine (21) of a vehicle, ...  

Matches 251 - 300 out of 13,749