-
公开(公告)号：US20190036440A1
公开(公告)日：2019-01-31
申请号：US16149739
申请日：2018-10-02
Applicant: Huawei Technologies Co., Ltd.
Abstract: The disclosure relates to a controller for a power converter, the power converter comprising a first switch and a second switch, wherein the controller is configured to receive a first control signal based on a first drain-to-source voltage of the first switch; receive a second control signal based on a second drain-to-source voltage of the second switch; derive a first switch control signal based on the first control signal and control the first switch by providing the first switch control signal to the first switch; derive a second switch control signal based on the second control signal and control the second switch by providing the second switch control signal to the second switch; wherein the first switch control signal and the second switch control signal each comprises turn-on edges and turn-off edges. Furthermore, disclosure also relates to corresponding methods, a non-transitory computer readable medium.
-
公开(公告)号：US20230036842A1
公开(公告)日：2023-02-02
申请号：US17966084
申请日：2022-10-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Luyu WANG , Shengyong DAI , Grover Victor TORRICO-BASCOPÉ , Qingzu HONG , Xiao ZHANG
Abstract: The present disclosure relates to a DC-to-DC converter. The DC-to-DC converter includes a first port coupled to a first full bridge and a transformer coupled to the first full bridge and to a second full bridge. The DC-to-DC converter further includes a second port coupled to the second full bridge; a first inductor coupled between the second full bridge and the second port; and a first freewheeling circuit including a first diode being coupled in series with a switch. The first freewheeling circuit is further coupled in parallel with the first inductor between the second full bridge and the second port. Thereby, the DC-to-DC converter has a wide input and wide output (WIWO) range and a voltage gain that is linear.
-
公开(公告)号：US20180198373A1
公开(公告)日：2018-07-12
申请号：US15913990
申请日：2018-03-07
Applicant: Huawei Technologies Co., Ltd.
Abstract: A switching circuit includes a first half-bridge circuit, a second half-bridge circuit and a voltage divider circuit connected in parallel with each other and a DC input power (VDC). The first half-bridge circuit includes a first pair of series connected switches and the second half-bridge circuit comprises a second pair of series connected switches.
-
公开(公告)号：US20230198417A1
公开(公告)日：2023-06-22
申请号：US18169948
申请日：2023-02-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Grover Victor TORRICO-BASCOPÉ , Carlos MARTINEZ
CPC classification number: H02M3/33571 , H02M1/096 , H02M1/325 , H02M1/143
Abstract: A power converter apparatus employs an energy recovery auxiliary circuit to suppress overvoltage oscillations and achieve high efficiency in a resonant LLC power converter system having high power density. The power converter apparatus includes an inverter configured to receive a DC input power and produce an AC voltage, a resonant tank including a resonant inductor and a resonant capacitor coupled between the AC voltage and a primary winding of a transformer, a rectifier configured to produce a DC output power coupled to a secondary winding of the transformer. The power converter suppresses overvoltage oscillations on rectifier switches by employing an energy recovery auxiliary circuit to transfer, during a transition period, current from the secondary side to a clamping capacitor conductively coupled to the primary side of the converter. The energy is then recovered during a subsequent power transfer cycle, thereby improving overall efficiency of the power converter.
-
公开(公告)号：US20230131154A1
公开(公告)日：2023-04-27
申请号：US18145179
申请日：2022-12-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Mattias ANDERSSON , Grover Victor TORRICO-BASCOPÉ , Shengyong DAI , Xiao ZHANG , Qingzu HONG
Abstract: The technology of this application relates to a drive circuit with an energy recovery function, including a control circuit, an energy recovery drive circuit, a switch circuit, and a direct current power supply. The control circuit is configured to control an energy storage capacitor in the energy recovery drive circuit to charge a junction capacitor of the switch circuit at a first moment, and enable the direct current power supply to charge the junction capacitor of the switch circuit through the energy recovery drive circuit at a second moment, so that the switch circuit is switched on. The control circuit is further configured to control the junction capacitor of the switch circuit to charge the energy storage capacitor in the energy recovery drive circuit at a third moment, and enable the junction capacitor of the switch circuit to discharge to a ground through the energy recovery drive circuit at a fourth moment, so that the switch circuit is switched off.
-
Patent Agency Ranking
公开(公告)号：US20190013741A1
公开(公告)日：2019-01-10
申请号：US16132048
申请日：2018-09-14
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H02M3/33576 , H02M1/083 , H02M3/285 , H02M3/337 , H02M2001/0058 , H02M2001/0074 , H02M2007/4815 , Y02B70/1433 , Y02B70/1441 , Y02B70/1491
Abstract: A resonant circuit includes first, second, and third input nodes configured to receive a three phase input power and is formed as a delta circuit including a first leg connected between a first corner node and a second corner node, a second leg connected between the second corner node and a third corner node, and a third leg connected between the third corner node and the first corner node. A first outer resonant device is connected between the first input node and the first corner node, a second outer resonant device connected between the second input node and the second corner node, and a third outer resonant device connected between the third input node and the third corner node. Each leg of the delta circuit includes an inner resonant device connected in series with a corresponding transformer.
-
公开(公告)号：US20160365803A1
公开(公告)日：2016-12-15
申请号：US15250477
申请日：2016-08-29
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H02M3/33546 , H02M1/15 , H02M3/33584 , H02M2001/0058 , H02M2007/4811 , H02M2007/4815 , Y02B70/1433 , Y02B70/1491
Abstract: The present invention relates to a bi-directional DC-DC converter comprising: a first terminal, a second terminal, a transformer circuit, a first high voltage side coupled to said first terminal, and a second low voltage side coupled to said second terminal; wherein said first high voltage side and said second low voltage side are coupled to each other by means of said transformer circuit, and said first high voltage side comprises a resonant tank circuit coupled between a first bridge circuit of said first high voltage side and a high voltage side of said transformer circuit. Furthermore, the invention also relates to a system comprising at least two such bi-directional DC-DC converters.
Abstract translation: 本发明涉及一种双向DC-DC转换器，包括：第一端子，第二端子，变压器电路，耦合到所述第一端子的第一高压侧和耦合到所述第二端子的第二低电压侧; 其中所述第一高压侧和所述第二低电压侧通过所述变压器电路彼此耦合，并且所述第一高压侧包括耦合在所述第一高压侧的第一桥接电路和高电压侧之间的谐振回路 所述变压器电路的电压侧。 此外，本发明还涉及包括至少两个这样的双向DC-DC转换器的系统。
-
公开(公告)号：US20230053061A1
公开(公告)日：2023-02-16
申请号：US17976010
申请日：2022-10-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yaqoob MUHAMMAD , Shengyong DAI , Qingzu HONG , Xiao ZHANG , Grover Victor TORRICO-BASCOPÉ
Abstract: According to a non-isolated DCDC resonant conversion control circuit provided in embodiments of this application, an inductor and a capacitor that are resonant are connected in series, so that a current flowing through the inductor is a sine waveform. A waveform coefficient of the sine wave is small, and a conduction loss of the sine wave is low. Therefore, the circuit provided in embodiments of this application can significantly reduce a circuit loss. According to the non-isolated DCDC resonant conversion control method provided in embodiments of this application, not only a phase shift angle can be adjusted to enable a switching transistor to implement zero voltage switching (ZVS) on, but switching frequency can also be adjusted. Therefore, ranges in which a voltage and power of an output interface can be adjusted are large, so that non-isolated wide-range DCDC resonant conversion is implemented.
-
公开(公告)号：US20200321878A1
公开(公告)日：2020-10-08
申请号：US16904735
申请日：2020-06-18
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yanzhong ZHANG , Zheng MA , Boning HUANG , Grover Victor TORRICO-BASCOPÉ , Dianbo FU
Abstract: A resonant converter circuit comprises a multi-level inverter circuit placed before a resonant unit, and the multi-level inverter circuit can reduce a voltage to be input to the resonant unit. The reduced input voltage of the resonant unit results in a drop in an output voltage of the entire resonant converter circuit. In this process, the final output voltage is adjusted by adjusting the input voltage of the resonant unit, with no need to substantially adjust a switching frequency of the resonant converter circuit.
-
公开(公告)号：US20190131880A1
公开(公告)日：2019-05-02
申请号：US16234191
申请日：2018-12-27
Applicant: Huawei Technologies Co., Ltd.
Abstract: The present invention relates to a bi-directional DC-DC converter comprising: a first terminal, a second terminal, a transformer circuit, a first high voltage side coupled to said first terminal, and a second low voltage side coupled to said second terminal; wherein said first high voltage side and said second low voltage side are coupled to each other by means of said transformer circuit, and said first high voltage side comprises a resonant tank circuit coupled between a first bridge circuit of said first high voltage side and a high voltage side of said transformer circuit. Furthermore, the invention also relates to a system comprising at least two such bi-directional DC-DC converters.
-
-
-
-
-
-
-
-
-
Search Results
11
records
(took 0.017 seconds)
