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WO/2009/148555 |
A method of reducing switching losses in a power supply includes the steps of advancing the output voltage of a first pole of a power cell by a first angle, retarding the output voltage of a second pole of the power cell by a second angl...
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WO/2009/144122 |
The invention relates to a method for regulating the rotational speed of an electric drive (1), in particular of an electric tool, in which method a rotational angle of a rotor (2) of the electric drive (1) is defined, then the time (tis...
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WO/2009/144987 |
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...
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WO/2009/139078 |
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...
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WO/2009/138152 |
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,...
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WO/2009/139505 |
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 ...
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WO/2009/139080 |
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...
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WO/2009/139077 |
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 ...
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WO/2009/134871 |
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...
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WO/2009/131429 |
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...
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WO/2009/125047 |
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...
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WO/2009/121724 |
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...
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WO/2009/118299 |
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...
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WO/2009/119602 |
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...
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WO/2009/115018 |
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...
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WO/2009/109957 |
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...
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WO/2009/109453 |
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...
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WO/2009/106673 |
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...
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WO/2009/105437 |
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...
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WO/2009/103505 |
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...
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WO/2009/103504 |
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...
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WO/2009/105437 |
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...
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WO/2009/103505 |
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...
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WO/2009/098201 |
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...
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WO/2009/096158 |
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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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