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Patent Searching and Data


Matches 401 - 450 out of 6,566

Document Document Title
WO/2009/144987A1
Provided is a matrix converter device with which the capacitor voltage of a filter provided on the input side approximates a sinusoidal wave and with which the peak value is also reduced, in which an input filter using a capacitor with a...  
WO/2009/139078A1
In a power generator voltage stabilizing system for compensating for a reactance voltage drop inside a three-phase synchronous generator (1) connected to an alternating-current load (3), a magnetic energy recovery switch (2) provided wit...  
WO/2009/138152A1
The system comprises: AC/AC static disconnecting switch means (16) connectable between an AC current supply network mains (12) and a load (10) and controllable to connect or isolate the load from the mains; voltage-stabilizing means (20,...  
WO/2009/139505A1
Provided is an AC voltage control device inserted between an AC power source and an induction load so as to adjust a load voltage of the induction load by a magnetic energy regenerative switch. The device reduces the voltage load on an ...  
WO/2009/139080A1
In a power generator output stabilizing system performing the shake control of a power system and a three-phase synchronous generator, a magnetic energy recovery switch provided with a bridge circuit comprising four reverse conductive ty...  
WO/2009/139077A1
An alternating voltage control unit is provided with a magnetic energy recovery switch (1) comprising a bridge circuit comprising four reverse conductive type semiconductor switches (S1, S2, S3, S4) and a capacitor (2) that is connected ...  
WO/2009/134871A1
A cat-ear power supply is operable to generate a DC voltage and draws current from an AC power source near the beginning and end of a half-cycle of the AC power source. A controllably conductive switching circuit selectively charges an e...  
WO/2009/131429A1
The invention refers to the electrical engineering, particularly to the power medium- or high-voltage transformers. It is proposed to make transformer as series and/or parallel connected modules, consisting of low-power electronic transf...  
WO/2009/125047A1
The invention relates to a power supply apparatus (1) and also to a power supply arrangement. The power supply apparatus comprises an interface to the load (2). The power supply apparatus also comprises at least one controllable solid-st...  
WO/2009/121724A1
The matrix converter for converting a single or multi-phase input voltage with a variable or fixed frequency and a variable or fixed amplitude into a single or multi-phase output voltage with a variable frequency and/or amplitude is prov...  
WO/2009/118299A3
The invention relates to a circuit arrangement (10) for operating a universal motor (11) which is designed to drive a drum of a domestic device for treating items of laundry, said universal motor (11) comprising a stator with at least on...  
WO/2009/119602A1
Provided is a power supply device capable of applying N-phase N-wire type power supply to the load corresponding to N-phase (N + 1) wire type power supply and dealing with different voltages. Output lines of power supply (E1) are connect...  
WO/2009/115018A1
An electric energy feedback device includes: an alternating current input power supply, which is three-phase or multiphase alternating current, or three-phase or multiphase alternating current whose output terminals are connected in seri...  
WO/2009/109957A1
A circuit that receives a sinusoidal input voltage and produces an AC voltage having a variable value, including: an input for connection of a the sinusoidal input voltage (11); an output for connection to a load (31); and a switching ci...  
WO/2009/109453A1
The invention relates to a device for connecting at least one single-phase power supply line (4, 14, 15) that feeds the overhead line of a railroad track in particular to a three-phase power supply network (1). In the process, at least o...  
WO/2009/106673A1
The invention relates to a frequency converter (1), which is fitted to supply power between a polyphase alternating electricity source (2) and an electric machine (3). The frequency converter comprises a network rectifier (4) connected t...  
WO/2009/105437A2
Existing measurements of an input component (such as voltage or current) in a three phase power supply system are decomposed into a negative sequence component. The negative sequence component, which is significantly higher when a rectif...  
WO/2009/103505A3
The invention relates to a method for controlling a converter of a wind energy plant, said converter being connected to the rotor of a double-energized asynchronous generator for supplying electric energy to an electric power grid, where...  
WO/2009/103504A3
The invention relates to a method for controlling a converter (7) of a wind energy plant, the converter being connected to the rotor of a double-energized asynchronous generator (4) for supplying electric energy to a power grid (10), whe...  
WO/2009/105437A3
Existing measurements of an input component (such as voltage or current) in a three phase power supply system are decomposed into a negative sequence component. The negative sequence component, which is significantly higher when a rectif...  
WO/2009/103505A2
The invention relates to a method for controlling a converter of a wind energy plant, said converter being connected to the rotor of a double-energized asynchronous generator for supplying electric energy to an electric power grid, where...  
WO/2009/098201A1
The invention relates to a converter with a network-side and a load-side power converter (2, 4) that are connected together on the DC side in an electrically conductive manner, wherein an upper and a lower valve branch (T1, T3, T5; T2, T...  
WO/2009/096158A1
An inverter circuit (120) is constituted such that synchronous rectification is performed by six switching elements (130). Said switching elements (130) are constituted by unipolar elements (in this case, SiC MOSFETs) using a wide bandga...  
WO/2009/095528A1
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/2009/092234A1
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/2009/087176A1
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/2009/082068A2
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/2009/082066A2
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/2009/082065A2
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/2009/082065A3
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/2009/082066A3
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/2009/077011A1
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/2009/068745A1
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/2009/066838A2
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/2009/066840A2
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/2009/066840A3
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/2009/066838A3
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/2009/066839A2
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/2009/066839A3
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/2009/059372A1
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/2009/061219A2
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/2009/061219A3
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/2009/057866A2
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/2009/058680A1
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/2009/056666A1
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/2009/057866A3
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/2009/058680A8
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/2009/053520A1
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/2009/054379A1
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/2009/053519A1
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...  

Matches 401 - 450 out of 6,566