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Patent Searching and Data


Matches 401 - 450 out of 2,808

Document Document Title
WO/2009/095528
The invention relates to a transport system and also to a method for supplying power in a transport system. The transport system comprises an electric motor (1) and also the power supply circuit (2) of the transport system connected to t...  
WO/2009/092234
An AC plasma ejection gun and its power supply method and a pulverized coal burner are provided. The ejection gun includes a power supply device, a front electrode and a rear electrode which are electrically conductive. The power supply ...  
WO/2009/087176
The invention relates to a power supply device (2) for an arc furnace (1) powered by an alternating current, and for controlling the active and reactive powers at said arc furnace. The supply device is provided on the side of a high-volt...  
WO/2009/082068
The present invention relates to a method of controlling a three-phase motor of an air conditioner by using an inverter including a total of three pairs of upper and lower arm switching elements connected in parallel, wherein the motor i...  
WO/2009/082066
The present invention relates to a motor controller of an air conditioner, including a converter for converting a commercial AC power into a DC power, an inverter including a plurality of switching elements, the inverter receiving the DC...  
WO/2009/082065
The present invention relates to a motor controller for air conditioner including a converter converting AC utility power into DC power; an inverter for compressor having a plurality of switching elements for inverter, the inverter conve...  
WO/2009/082065
The present invention relates to a motor controller for air conditioner including a converter converting AC utility power into DC power; an inverter for compressor having a plurality of switching elements for inverter, the inverter conve...  
WO/2009/082066
The present invention relates to a motor controller of an air conditioner, including a converter for converting a commercial AC power into a DC power, an inverter including a plurality of switching elements, the inverter receiving the DC...  
WO/2009/077011
The described invention relates to our supply arrangement, a supply unit and a method inwhich a switching element is con- nected in series to an operating voltage and an electrical load, wherein a supply unit supplies an electronic unit ...  
WO/2009/068745
There is provided a control circuit (200) comprising: a sampling controller configured to sample an output voltage (300) of a power converter at an appropriate time slot by opening a control loop; and a soft-start circuit configured to e...  
WO/2009/066838
The present invention relates to a motor controller for air conditioner including a converter having at least one switching element for converter, the converter converting AC utility power into DC power by a switching operation of the sw...  
WO/2009/066840
The present invention relates to a motor controller, including a converter for converting commercial AC power into DC power, an inverter including a plurality of switching elements, the inverter receiving the DC power, converting the DC ...  
WO/2009/066840
The present invention relates to a motor controller (300) including an inverter (320) which receives DC power, converts the DC power into AC power of a specific frequency through switching operations, and supplies the AC power to a three...  
WO/2009/066838
The present invention relates to a motor controller (200) for air conditioner including a converter (210) having at least one switching element for converter, the converter converting AC utility power into DC power by a switching operati...  
WO/2009/066839
The present invention relates to a motor controller of an air conditioner, including an inverter including a plurality of switching elements and adapted to convert a DC voltage, input through switching operations of the switching element...  
WO/2009/066839
The present invention relates to a motor controller (200) of an air conditioner, including an inverter (220) including a plurality of switching elements and adapted to convert a DC voltage, input through switching operations of the switc...  
WO/2009/059372
The present invention proposes a hot surface igniter (HSI) controller which is transformerless and which is capable of delivering power from a 120/240 VAC RMS mains voltage, for example, to a load whose nominal operational voltage is equ...  
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 ...  

Matches 401 - 450 out of 2,808