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Matches 401 - 450 out of 2,790

Document Document Title
WO/2009/061219
An AC processing apparatus and method for high-power inductive power transfer (IPT) applications is disclosed which includes an input means for coupling to a voltage source, a processing means for producing an output signal based directl...  
WO/2009/061219
An AC processing apparatus and method for high-power inductive power transfer (IPT) applications is disclosed which includes an input means for coupling to a voltage source, a processing means for producing an output signal based directl...  
WO/2009/057866
A motor controlling method and apparatus of an air conditioner are disclosed. It is checked whether or not an operation frequency of a compressor motor is the same as or greater than a certain frequency (S610) and it is also checked whet...  
WO/2009/058680
An airplane ground support system includes a multi-voltage power supply. This system includes an air conditioning module and a control module having a display and a processor, the display and processor presenting an airplane type or clas...  
WO/2009/056666
The invention relates to a power supply arrangement, a power transformer (6) and also a method for supplying power in an elevator system. The power supply arrangement of the elevator comprises an elevator motor (1), a power supply circui...  
WO/2009/057866
A motor controlling method and apparatus of an air conditioner are disclosed. It is checked whether or not an operation frequency of a compressor motor is the same as or greater than a certain frequency (S610) and it is also checked whet...  
WO/2009/058680
An airplane ground support system includes a multi-voltage power supply. This system includes an air conditioning module and a control module having a display and a processor, the display and processor presenting an airplane type or clas...  
WO/2009/053520
The object of the invention is an arrangement in a direct connected drive in which the rotation speed of a motor connected to an actuator is controlled using a high frequency modulated frequency converter (4, 14, 16) supplying alternatin...  
WO/2009/054379
Provided is a power conversion device which can easily generate a carrier while suppressing distortion of an input current waveform. A switch element (Srp) is electrically connected when a carrier (C1) has a value 0 to drt and a switch e...  
WO/2009/053519
The object of the invention is a coupling arrangement when using a frequency converter (14, 16) to control an electrical machine (44) connected to an actuator, at least the electrical machine (44) being located in an explosive atmosphere...  
WO/2009/054380
Provided is a power conversion device which can easily generate a carrier while suppressing distortion of an input current waveform. A carrier generation unit generates a carrier having a waveform with a temporally constant inclination a...  
WO/2009/051320
The present invention relates to a motor controller (200) for an air conditioner and a motor control method. The motor controller is configured to have an AC/DC converter and an inverter built on the switching elements (220). Said invert...  
WO/2009/051320
The present invention relates to a motor controller (200) for an air conditioner and a motor control method. The motor controller is configured to have an AC/DC converter and an inverter built on the switching elements (220). Said invert...  
WO/2009/050124
The invention relates to a variable control device (10) connected in series with an electrical load (12) to be controlled on one phase of an AC electrical circuit. The control device (10) comprises: two power switches (J1, J2), of the no...  
WO/2009/047769
A power providing system for an electrical device comprising: a secondary inductor, wired to the electrical device, for inductively coupling with a primary inductor hardwired to a power supply. The secondary inductor is incorporated into...  
WO/2009/047768
A system, for providing power to a workspace by induction, comprises at least one inductive power outlet incorporated into a bounding surface of the workspace. The inductive power outlet comprises at least one primary inductor connectabl...  
WO/2009/045663
A portable device for generating two electrical phases from a single electrical phase. The portable device includes a housing having a toroidal transformer therein. An input terminal block and an output terminal block are mounted to the ...  
WO/2009/044293
A step wave power converter comprises multiple different bridge circuits configured to convert DC voltage inputs into AC voltage outputs. A controller is configured to estimate an average voltage output from the multiple different bridge...  
WO/2009/039305
Methods and apparatus to provide low harmonic distortion AC power for distribution by converting energy from natural or renewable sources into electrical form, and constructing a current waveform on a primary winding of a transformer by ...  
WO/2009/039305
Methods and apparatus to provide low harmonic distortion AC power for distribution by converting energy from natural or renewable sources into electrical form, and constructing a current waveform on a primary winding of a transformer by ...  
WO/2009/034420
A power system and a control method thereof are disclosed. The power system comprises: providing a plurality of power sources; electrically connecting a plurality of converters between the power sources and at least one load, wherein the...  
WO/2009/036430
A system for bypassing a power cell of a power supply, the system including a multi-winding device having a primary winding and a plurality of three-phase secondary windings, a plurality of power cells, wherein each power cell is connect...  
WO/2009/036430
A system for bypassing a power cell of a power supply, the system including a multi-winding device having a primary winding and a plurality of three-phase secondary windings, a plurality of power cells, wherein each power cell is connect...  
WO/2009/033574
The invention relates to a system and a method for operating a system which comprises a capacitor (7), especially a reservoir capacitor, that can be charged via at least one rectifier. The system is characterized by at least one means fo...  
WO/2009/032660
A colorimetric composition is disclosed comprising a polycarbonate resin, a dye, and a thiopropionate. The composition undergoes an irreversible color shift to a darker color upon exposure to sunlight or UV radiation. Processes for produ...  
WO/2009/016340
A discrete-time voltage-oriented control (DT- VOC) scheme for controlling a voltage source converter (VSC) active rectifier/inverter (2) involving the calculation of a discrete-time model of the active rectifier/inverter and load system ...  
WO/2009/016267
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/2009/013992
Provided is a control method for a matrix converter using a two-phase modulation method of a low loss, which is enabled to output a stabilized voltage of a high precision by suppressing the output voltage error to occur at the time of ou...  
WO/2009/011783
In one embodiment, a method is provided for providing power to a radio-frequency (RF) component capable of operating under multiple communication standards, wherein each standard has a respective operating frequency. The method includes:...  
WO/2009/008742
The present invention relates to a multi output inverter that is adapted to supply mains powered appliances (47-49) and/or poly-phase motors (50, 51). The inverter is also adapted to reduce ripple current.  
WO/2009/004466
A voltage regulator circuit having two terminals adapted to be connected to an AC voltage generator (30) and respectively to a load (39) to be supplied with a predetermined effective voltage. The circuit comprises a bidirectional electro...  
WO/2009/004466
A voltage regulator circuit having two terminals adapted to be connected to an AC voltage generator (30) and respectively to a load (39) to be supplied with a predetermined effective voltage. The circuit comprises a bidirectional electro...  
WO/2008/155446
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/2008/156979
A system and method for producing anharmonic multi-phase currents wherein the harmonic component of an inverter is filtered and superimposed with a series of control pulses to create a control signal. The control signal is fed back to th...  
WO/2008/155445
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/2008/155445
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/2008/156979
A system and method for producing anharmonic multi-phase currents wherein the harmonic component of an inverter is filtered and superimposed with a series of control pulses to create a control signal. The control signal is fed back to th...  
WO/2008/151859
The inverter compound (3, 18, 20) according to the invention comprises at least one inverter power element (101, 102, 115, 107, 109, 111, 113, 115, 117) operated on an intermediate circuit (6). Said inverter compound further comprises a ...  
WO/2008/151145
A four pole, three-phase, NPC converter that produces virtually no common mode voltage. The low common mode voltage output is achieved by constraining the switch states of the NPC converter. A fourth pole and associated control balance t...  
WO/2008/140457
A matrix converter includes a plurality of switching elements and is adapted to receive a multi-phase alternating current (AC) input signal having an input frequency and to generate a multi-phase AC output signal having an output frequen...  
WO/2008/138911
The invention concerns a method and device for providing redundant control of a controllable current valve (46, 48) in a converter (16) of a power transmission system (10). The device includes a first converter control unit (34) sending ...  
WO/2008/138864
A control unit (CTL) has a link capacitor (C) and an inverter (WR) and is designed for controlling an electrical machine (EM). For operating the control unit (CTL), the inverter (WR) is controlled in such a way that a quick discharge of ...  
WO/2008/130889
A harmonics attenuator employing a combination controller that incorporates features of a classic controller and a state space controller to function as a hybrid controller unit, arranged in a manner that the two controllers compliment e...  
WO/2008/126593
[PROBLEMS] To provide a space vector modulation method for a matrix converter which uses only one carrier for three phases upon carrier comparison. [MEANS FOR SOLVING PROBLEMS] Provided is a matrix converter space vector modulation metho...  
WO/2008/126591
[PROBLEMS] To provide a space vector modulation method for a matrix converter which can convert an I/O waveform into a sine wave and reduce the number of switching times even upon transfer between sectors. [MEANS FOR SOLVING PROBLEMS] A ...  
WO/2008/124808
An oscillator (10) for synchronizing and controlling a multi-phase, interleaved power supply system (30) that has a plurality of power sources. The oscillator includes a first oscillator, having a pulse generator and a timing capacitor (...  
WO/2008/124808
An oscillator (10) for synchronizing and controlling a multi-phase, interleaved power supply system (30) that has a plurality of power sources. The oscillator includes a first oscillator, having a pulse generator and a timing capacitor (...  
WO/2008/123839
The present invention relates to the field of electronics and automatics; particularly, it relates to the processes of conversion of alternating current energy at input into alternating current energy at output, so that the voltage to ch...  
WO/2008/124225
A lighting control circuit includes a dimmer circuit which is provided for an electrical outlet. An inductive load detection circuit is provided for identifying the presence of an inductive load in the electrical outlet. When an inductiv...  
WO/2008/117166
A power converter apparatus, such as an uninterruptible power supply (UPS), includes an inverter having an input coupled to a first DC bus and a second DC bus and configured to generate an AC output with respect to a neutral terminal at ...  

Matches 401 - 450 out of 2,790