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Matches 251 - 300 out of 6,694

Document Document Title
WO/2010/043546A1
High frequency resonance based ignition system comprising a generator, a resonance structure, and a heat release interface, the resonance structure having a high frequency coil, characterized in that it further comprises a tuning element...  
WO/2010/033759A1
A voltage regulator is provided that includes a plurality of buck-boost transformers each having primary and secondary windings. The secondary windings of the transformers are electrically disposed in series between a source and a load. ...  
WO/2010/022750A1
The invention relates to a tap switch for uninterrupted changeover between two winding taps (tap n, tap n+1) of a tapped transformer, wherein each of the two winding taps is connected to the common outgoing load line via in each case a m...  
WO/2010/022751A1
The invention relates to a method for switching without any interruption between two winding taps (tap n, tap n+1) of a tap-changing transformer, wherein each of the two winding taps is connected to the common load output line via in eac...  
WO/2009/152662A1
A self power-acquiring quickly responsive controllable electric reactor is provided. The coil of the main body portion (1) of the controllable electric reactor contains a net-side winding (5) and a control winding (6). The coil of the ma...  
WO/2009/146579A1
A magnetic filter includes three iron stud cores (2), an upper yoke (11), a lower yoke (12) and three coil assemblies (3) separately around three iron stud cores, the iron stud cores are placed symmetrically to each other in 120-degree b...  
WO/2009/137908A1
A tap-switching autotransformer for regulating the voltage supplied to a facility includes an electronics sub-assembly for controlling switching of the taps. The electronics sub-assembly and the windings are contained in a housing from w...  
WO/2009/136879A1
The invention pertains to the execution of the turns of a coil of a transformer or the like. The invention presents a solution for linearly varying, with a small resolution interval, the number of turns of a coil. The invention applies f...  
WO/2009/094541A3
An electromagnetic actuator with flux feedback control includes two poles located on opposite sides of a soft-magnetic target. A bias flux is introduced that flows into both poles. Magnetic circuitry may be designed so that the total bia...  
WO/2009/121143A1
A fault current limiter (FCL) includes a series of high permeability posts (1) for collectively define a core for the FCL. A DC coil (2), for the purposes of saturating a portion of the high permeability posts (1), surrounds the complete...  
WO/2009/107130A1
A method for providing an operating voltage to an air conditioner, including: measuring an input line voltage; comparing the measured input line voltage to an desired operating voltage of the air conditioner; and transforming the input l...  
WO/2009/105932A1
An external-hanging type combined on-load tap-changer comprises a housing(200), a tap-chooser(600), a change-over switch assembly(700), a transmission means and an electric operating mechanism. Terminals(220) are provided at a sidewall o...  
WO/2009/105931A1
A movable contact of a tap changer comprises a mounting plate assembly (200) of the movable contact revolving with a main shaft of the changer and a clip-on movable contact (300) provided on the mounting plate assembly (200) of the movab...  
WO/2009/096816A1
The inventive device comprises a closed magnetic circuit, a central rod disposed inside the closed magnetic circuit, a control winding arranged on the central rod, a power winding and a control unit. The device also comprises a cylindric...  
WO/2009/094541A2
An electromagnetic actuator with flux feedback control includes two poles located on opposite sides of a soft-magnetic target. A bias flux is introduced that flows into both poles. Magnetic circuitry may be designed so that the total bia...  
WO/2009/089261A1
The electrically tunable inductive device (10) includes an electromagnet (12) including an electromagnet core (14) and a bias or tuning coil (16) cooperating therewith to define opposing magnetic poles for generating a quiescent magnetic...  
WO/2009/073875A1
A load tap changer includes a single mechanical switch that is movable to create, in a first position, a first conducting path between a first transformer tap and a load. When the switch is in a second position, the switch creates a seco...  
WO/2009/065219A1
An electrical generator comprises an induction coil having a first end and a second end. There is a first magnet disposed adjacent the first end of the induction coil so as to be in the electromagnetic of the induction coil when the indu...  
WO/2009/056018A1
An apparatus (10, 110, 510, 610) for controlling the starting and stopping of an AC induction motor comprises: a first magnetic permeable portion (20, 40, 120, 140, 520, 540, 620, 640) having first, second and third legs (21, 22, 23, 41,...  
WO/2009/008765A1
The invention relates to electrical engineering, in particular to transformer production, and can be used in current-limiting devices which, during short-circuits in electric networks, make it possible to use the network breakers when th...  
WO/2008/138623A1
The invention relates to a method for influencing the magnetic coupling between two bodies (10, 12) at a distance from each other, characterized in that a controllable field displacement device (13) having a field displacement area is pl...  
WO/2008/100126A1
The invention relates to a transformer for current of controlled residual flux, formed by: a toroidal magnetic core with a central opening; a primary conductor which extends through the central opening and which is supplied with a main c...  
WO/2008/100127A1
The invention relates to a transformer for controlled electric voltage, including: a magnetic core; at least one primary winding which is supplied with a main current in order to generate a main magnetic flux on the magnetic core; at lea...  
WO/2008/073034A1
An inductor regulator (50) for controlling the active and/ or reactive power flow in a three-phase electric transmission network (30,40), which for each phase comprises a first stator winding (60a, 60b, 60c) and a second stator winding 6...  
WO2007073316A9
A device for controlling a magnetic flux in an electro- magnetic system, wherein the system comprises magnetically connected magnetic cores, between which a volume is arranged. The volume comprises a controllable magnetic flux region and...  
WO/2008/031302A1
A non-excited drum tap-changer for a transformer includes an upper pedestal (2) and a lower pedestal (3). Insulated shafts (4) are positioned around the upper pedestal (2) and the lower pedestal (3), characterized in that fixed contacts ...  
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/2008/024048A1
The present invention relates to a motor drive cabinet (2) in an on-load tap-changer, comprising an electric motor drive unit and a control unit (12). The electric motor drive unit comprises an electric motor (6), a gearbox (7) and a pos...  
WO/2008/024067A1
A resistor (10) for electric high-voltage apparatus, especially for connection to a diverter switch (11) in an on-load tap changer for a high-voltage transformer. The diverter switch (11) and the resistor (10) are arranged in a housing w...  
WO/2008/020750A1
A controlled electric voltage transformer which is formed by at least one magnetic core; at least one primary winding; at least one secondary winding, such that the primary winding or the secondary winding or both windings have a series ...  
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/2008/009195A1
A signal compensation method for passive signal isolators, which adds a compensation transformer in the passive signal isolator circuit, wherein a primary coil of the compensation transformer is connected to a primary or secondary coil o...  
WO/2007/140675A1
A non-excited tap-changer with shielding device for a transformer includes an upper and a lower bearing (1,2). A rotating shaft (3) passes through the upper and the lower bearing (1,2) and is connected to an insulator (5). One end of the...  
WO/2007/107872A3
A universal control and diagnostic system (10) for a transformer (12) that may be retrofit with existing control and tap-changer equipment, the system providing for remote monitoring and control of the equipment and for measuring various...  
WO/2007/135209A1
The present invention relates to a static tap changer for HT/MT and MT/LT distribution transformers based on switched thyristors, which achieves an increase in the number of output voltages of up to 50% for HT/MT transformers with linear...  
WO/2005/026860A3
A preventive maintenance tapping technique includes noting a tap position of a load tap changer and noting a duration that the tap position has been held. The duration that the tap position has been held is compared to a threshold value,...  
WO/2007/107872A2
A universal control and diagnostic system (10) for a transformer (12) that may be retrofit with existing control and tap-changer equipment, the system providing for remote monitoring and control of the equipment and for measuring various...  
WO/2007/101849A1
A hybrid on-load tap changer (70), for use in high voltage alternating current power transmission, comprises a selector (72) and a diverter (74) having two legs (80, 82) defining respective current paths. Each leg (80, 82) includes a pai...  
WO/2007/099928A1
An oscillator includes: a glass substrate (21) having fixed electrodes (23a, 23b); a second glass substrate (28) having a coil pattern (30); a silicon substrate (26) arranged between the first and the second glass substrate and having a ...  
WO/2007/073316A1
A device for controlling a magnetic flux in an electro- magnetic system, wherein the system comprises magnetically connected magnetic cores, between which a volume is arranged. The volume comprises a controllable magnetic flux region and...  
WO/2006/103268A3
The invention relates to commutation in on-load tap changers and in particular to the utilisation of arcing at the contacts of one of a pair of opposed switch elements . The invention provides a commutation circuit being connectable to a...  
WO/2007/049604A1
Disclosed is a power transmission device comprising a magnetic member (10) fixed to a first member (1), a first coil (12) provided on the first member and wound around the magnetic member, and a second coil (14) provided on a second memb...  
WO/2007/035111A1
The present invention relates to a power supply system with voltage stabilisation comprising, for each phase an autotransformer (TA, TB, TC) with a parallel winding (4, 5, 6) and a series winding (7, 8, 9), the autotransformer (TA, TB, T...  
WO/2004/025703A3
A system for electrically contacting a semiconductor wafer (22 in Fig. 1) during implanting of the wafer includes one or more pairs of closely spaced contacts located adjacent the wafer (12a and 12b in Fig 1) and a driving circuit connec...  
WO/2007/029224A1
A current limiting device (30, 40, 50, 60) comprising for each phase of an AC supply a closed magnetic core (31) of reduced volume and mass having first and second pairs of opposing limbs (32a, 32b; 33a, 33b), and at least one AC coil (3...  
WO2004064084A3
An inductor (106) with self-damping properties for use in multiple applications including for high power broadband frequency applications is provided by a coil having an input end and an output end and wound about a core (112) of magneti...  
WO/2006/120919A1
A change action monitoring device for an on-load tap changer enables adoption of a relatively simple and inexpensive torque detecting means by mitigating the requirement of the detection accuracy of the start time of a change action, ena...  
WO/2006/103268A2
The invention relates to commutation in on-load tap changers and in particular to the utilisation of arcing at the contacts of one of a pair of opposed switch elements . The invention provides a commutation circuit being connectable to a...  
WO/2006/087401A1
The invention relates to a tap changer for medium-/low-voltage transformers. The inventive changer can be used to regulate the voltage levels at the output of the medium-/low-voltage transformer as a function of the distribution line loa...  
WO/2006/068503A1
The invention comprises a device for reduction of harmonics in three-phase (supply) systems comprising nonlinear devices comprising, for each phase, a circuit element with controllable impedance, comprising a first magnetic core, a first...  

Matches 251 - 300 out of 6,694