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WO/2022/134848A1 |
A carrier frequency control method and apparatus for power factor correction, and an air conditioner. The carrier frequency control method is to use a special carrier frequency control near a zero-crossing point of a variable carrier fre...
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WO/2022/133691A1 |
The embodiments of the present application provide a switch circuit and a switch power supply, which relate to the technical field of electronic circuits, and can reduce the dead time, reduce the dead loss, and further reduce the loss of...
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WO/2022/137456A1 |
A power conversion device (100) supplies power to a load (2). The power conversion device (100) comprises a power conversion unit (110), a control unit (102), a noise suppression unit (130), and an anomaly detection unit (101). Power is ...
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WO/2022/134887A1 |
Provided in the embodiments of the present application are an isolated resonant conversion control method, apparatus and system, and a readable storage medium. The isolated resonant conversion control method comprises: acquiring an outpu...
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WO/2022/129943A1 |
A power supply circuit for providing a positive 209, intermediate 211 and negative 213 voltage supply, comprising: a positive DC voltage bus 201 and a negative DC voltage bus 203 for connection to a power source; a first voltage divider ...
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WO/2022/127352A1 |
The present invention relates to an LLC resonant topology control circuit based on a flyback chip, comprising an LLC resonant cavity, a current type flyback chip U1, a first driving circuit, a second driving circuit, a charge pump circui...
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WO/2022/127589A1 |
A control circuit (101) for an isolated power supply, and the isolated power supply and a control method therefor. The control circuit (101) for the isolated power supply comprises a secondary side control signal generator (102) and a pr...
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WO/2022/128101A1 |
The invention relates to a modular multilevel converter (1) having a plurality of modules (1_1 ... 6_n). The multilevel converter includes a plurality of support devices (401 ... 406), each of which supports a subset of the modules (1_1 ...
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WO/2022/132572A1 |
A utility meter includes: a rectifier configured to rectify AC voltage from a power grid to generate a primary DC voltage supply; and a primary holdup circuitry, including: first capacitors coupled to a primary DC voltage rail and config...
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WO/2022/128422A1 |
The invention relates to a power converter having a half bridge, comprising at least two semiconductor switches and a filter coil arranged at the connection node of both switching devices. The power converter is designed to carry out a v...
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WO/2022/130314A1 |
The invention relates to methods (200; 300) for controlling a frequency converter (100) which supplies electric power to an inductive load (10). The converter comprises a power supply circuit (20) with an input (21) connected to a voltag...
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WO/2022/128521A1 |
A vehicle charging circuit is provided with a rectifier device (PFC), at least one link capacitor (C; C1, C2) and at least one precharging/discharge circuit. The rectifier device (PFC) is connected to the link capacitor (C; C1, C2) by me...
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WO/2022/127008A1 |
A device for controlling an air conditioner, and an air conditioner. The device for controlling an air conditioner comprises: a circuit substrate (100); a power converter module (103); intelligent power modules, the intelligent power mod...
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WO/2022/128134A1 |
The present disclosure relates to a method for operating a converter. The converter comprises a first and second input terminal for receiving a DC voltage, an output terminal for providing an output voltage variable between a first volta...
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WO/2022/126583A1 |
An isolated power source chip based on wafer level packaging, comprising: an RDL-based micro transformer, a primary coil thereof being connected to a direct current power source and outputting the direct current voltage inputted by the d...
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WO/2022/129940A1 |
An adjustable three output DC voltage supply circuit (400) for providing a positive (409), intermediate (411) and negative (413) voltage supply, comprising: a positive DC voltage bus (401) and a negative DC voltage bus (403) for connecti...
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WO/2022/130074A1 |
Methods and systems for controlling current consumption by an electrical load of a first circuit board are described. In an example, a device of a first circuit board can measure a current being drawn by the electrical load of the first ...
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WO/2022/126697A1 |
Provided is a charging and discharging apparatus; the apparatus comprises a first switch tube (101), a second switch tube (102), a third switch tube (103), a fourth switch tube (104), a first equalization capacitor (105), a second equali...
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WO/2022/133203A1 |
A portable power supply including an internal power source, an AC output, a DC output, and an input unit configured to receive power from a first external source. The portable power supply further includes a first power conversion unit c...
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WO/2022/122703A1 |
A primary-side switched and isolated converter (1) with output terminals (101) for driving LED lighting means (102) is disclosed. The converter comprises: a transformer (103, 104) configured to couple a primary side (105) and a secondary...
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WO/2022/125365A1 |
A power conversion system comprises a power converter configured to convert an input voltage to an output voltage. The power converter comprises an inductor, at least one power switch coupled to the inductor, a feedback circuit, and a co...
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WO/2022/124567A1 |
A resonant converter comprises a switching unit, a resonant circuit unit, a transformation unit, and a control unit. The switching unit includes a plurality of switches which alternately switch a DC voltage to convert the DC voltage into...
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WO/2022/124627A1 |
The present invention relates to a first-cycle charging device and method of a modular multi-level converter, in which, in order to prevent the overcharging of a capacitor in a submodule in a HVDC system, charging and discharging of the ...
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WO/2022/122586A1 |
A VRM system comprises a first output group that comprises a first primary converter. The VRM system also comprises a second output group that comprises a second primary converter. The VRM system also comprises a first VRM output and a s...
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WO/2022/125086A1 |
A shoot-through protection circuit including a first switch connected to a positive bus and connected to a first center node via a first electrical path, a second switch connected to a negative bus and connected to the first center node ...
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WO/2022/121305A1 |
The present disclosure provides a soft start circuit and a power supply circuit. The soft start circuit is disposed between a negative electrode of a direct current bus capacitor and a negative terminal of a direct current power supply, ...
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WO/2022/121828A1 |
Provided in the embodiments of the present application are a power conversion circuit, a control method for the power conversion circuit, and a transformer, used for reducing the volume of devices in the power conversion circuit, and inc...
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WO/2022/123203A1 |
A buck-boost converter is described that comprises input terminals, output terminals, a first group of devices, a second group of devices, an inductor, a capacitor, and a controller. Each group of devices comprises a first switch, a seco...
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WO/2022/121073A1 |
An isolated power conversion method for demagnetization iteration control, and a power conversion circuit. A high-frequency transformer circuit of the power conversion circuit comprises a high-frequency transformer (102), wherein a prima...
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WO/2022/120436A1 |
A controller and an interleaved switching method for a converter for a polyphase connected inductive load including a method for operating: at least a first drive circuit and a second drive circuit in parallel, each connected to one or m...
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WO/2022/123977A1 |
The present invention suppresses continuous short-circuiting caused by an erroneous operation, and suppresses the flow of short-circuit peak current at that time.　This driving device comprises: a short-circuiting detection comparator (...
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WO/2022/125094A1 |
A disconnect switch includes a main switching device including a thyristor configured and operable to selectably close and open a main circuit between a first terminal and a second terminal. A resonant circuit is operatively coupled with...
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WO/2022/120012A1 |
A gate driver includes a variable strength driver circuit that provides an output signal to drive a high power device. The gate driver receives an update request from a host controller during an operating mode in which switching operatio...
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WO/2022/118089A1 |
A method for driving a half bridge (1 ) comprising a first device (2) and a second device (3), wherein the second device (3) is a transistor, the method comprising the steps of: - driving the devices (2, 3) with signals in accordance wit...
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WO/2022/119515A1 |
The invention relates to a system and method that allows industrial synchronous type electric motor (7) drives (variable frequency drives, VFD, AFD) to detect the short - circuit current and limit it so as not to damage the driver if the...
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WO/2022/117481A1 |
The present disclosure relates to an electronic device comprising: a first switch (T1) having a single voltage blocking direction; a second switch (T2) arranged electrically in series with the first switch between two nodes (15, 17) for ...
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WO/2022/119835A1 |
A method for driving a high-power drive device includes providing a signal having a first predetermined signal level to an output node during a first phase of a multi-phase transition process. The method includes generating a first indic...
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WO/2022/120021A1 |
A method for validating operation of a driver integrated circuit includes providing a signal using an output node. The signal is provided using multiple set points in response to a change in state of an input signal. Each set point corre...
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WO/2022/117989A1 |
A gate driver is described for driving switches. The gate driver comprises an input for receiving a signal indicative of a polarity of a voltage or current, and outputs for outputting gate signals for driving the switches. In response to...
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WO/2022/118626A1 |
This semiconductor device comprises: a first semiconductor element that switches between a conduction state and a cutoff state according to a first driving signal; a first control element that generates the first driving signal on the ba...
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WO/2022/118847A1 |
This common mode filter circuit comprises common mode transformers and capacitors. One end of a primary winding of each common mode transformer is connected to an output terminal of an inverter. Each capacitor has one end connected to an...
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WO/2022/117195A1 |
A converter arrangement (10) comprises a converter (11) with a first side (12) and a second side (13), a first connection line (16) connected to the first side (12) of the converter (11), a short-circuit switch (14) connected to the firs...
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WO/2022/117246A1 |
The invention relates to the verification of operating parameters, in particular input and output values of a DC-to-DC converter which are detected by a sensor. For this purpose, the ratio between the input current and the output current...
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WO/2022/117097A1 |
The present invention relates to the technical field of power converters, and disclosed is a power converter. The power converter comprises a printed circuit board, a connection member, and a housing, and the printed circuit board is pro...
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WO/2022/117985A1 |
A drive circuit to drive an induction heating system has a full-bridge inverter having first and second legs. Each of the first and second legs has a high-side switch and a low-side switch. The drive circuit has a coil to be driven by th...
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WO/2022/119278A1 |
The invention, which relates to an arrangement and a method for discharging a DC link capacitor (1), is based on the object of specifying a solution with which the DC link capacitor (1) is discharged to values below the safety extra-low ...
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WO/2022/113471A1 |
Provided is a load driving device comprising an ESD protection capacitor and a diagnostic circuit of a drive system driver, wherein the load driving device: rapidly charges the ESD protection capacitor even during load disconnection; and...
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WO/2022/110972A1 |
The present application provides a power converter, relating to the field of automobiles, and applicable to various electric vehicles. The power converter comprises an input interface, multiple power modules, and multiple output interfac...
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WO/2022/110608A1 |
Disclosed in the present invention are a direct current high-power power supply soft start circuit and method, comprising an isolated DC-DC circuit, a constant current charging circuit, a full-charging determining module, and a switch lo...
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WO/2022/110891A1 |
Provided are a PFC circuit with single-phase and three-phase alternating-current inputs being compatible, which circuit can be used for a vehicle-mounted electric motor, and a control method and a charger. The PFC circuit is used for con...
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