-
公开(公告)号：US20210184574A1
公开(公告)日：2021-06-17
申请号：US17188859
申请日：2021-03-01
Applicant: Huawei Technologies Co., Ltd.
Abstract: A method comprises configuring a power converter to operate as a boost converter, the power converter comprising a low side switch and a high side switch, during a first dead time after turning off the low side switch and before turning on the high side switch, configuring the power converter such that a current of the power converter flows through a high speed diode, and after turning on the high side switch, configuring the power converter such that the current of the power converter flows through a low forward voltage drop diode.
-
公开(公告)号：US10903758B2
公开(公告)日：2021-01-26
申请号：US16566242
申请日：2019-09-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Dianbo Fu , Zhaohui Wang , Lei Shi
Abstract: A method comprises during a first half cycle, configuring a first switch to operate as an always-on switch, turning on a second switch prior to turning on a third switch and turning off the third switch prior to turning off the second switch, wherein the first switch and the second switch are connected in series and further in parallel with the third switch between a first terminal of a power source and a filter and during a second half cycle, configuring a fourth switch to operate as an always-on switch, turning on a fifth switch prior to turning on a sixth switch and turning off the sixth switch prior to turning off the fifth switch, wherein the fourth switch and the fifth switch are connected in series and further in parallel with the sixth switch between a second terminal of the power source and the filter.
-
公开(公告)号：US11159089B2
公开(公告)日：2021-10-26
申请号：US16911023
申请日：2020-06-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yanzhong Zhang , Zheng Ma , Lei Shi , Dianbo Fu
Abstract: A resonant converter includes: an input power supply, a bleeder circuit, a multi-level switching network, a resonant unit, and a transformer. The input power supply is connected to the bleeder circuit, the multi-level switching network is connected to the bleeder circuit, a clamping middle point of the multi-level switching network is connected to a middle point of the bleeder circuit; one end of the resonant unit is connected to the output terminal of the multi-level switching network, and the other end of the resonant unit is connected to one end of a primary side of the transformer; and the multi-level switching network instructs the output terminal of the multi-level switching network to output a square wave voltage with different amplitudes, to serve as an input voltage of the resonant unit, where the input voltage is used to adjust a gain of the resonant converter.
-
公开(公告)号：US11025163B2
公开(公告)日：2021-06-01
申请号：US16913219
申请日：2020-06-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Bo Yu , Jinxiang Zhan , Peiyong Li , Dianbo Fu
Abstract: A boost power conversion circuit includes an inductor, a first switch module, a second switch module, a first unilateral conduction component, a second unilateral conduction component, a flying capacitor, an upper bus capacitor, a lower bus capacitor, and a third unilateral conduction component. The power supply, the inductor, the first switch module, and the second switch module are connected in series to form a loop. The first unilateral conduction component, the second unilateral conduction component, the upper bus capacitor and the lower bus capacitor are connected in series. The flying capacitor is electrically connected between a reverse cut-off end of the first unilateral conduction component and a forward conduction end of the second unilateral conduction component. The third unilateral conduction component is configured to clamp a voltage stress of the second switch module to a lower-bus voltage.
-
公开(公告)号：US10978957B2
公开(公告)日：2021-04-13
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.
-
Patent Agency Ranking
公开(公告)号：US10938308B2
公开(公告)日：2021-03-02
申请号：US16566102
申请日：2019-09-10
Applicant: Huawei Technologies Co., Ltd.
IPC: H02M3/155 , H02M3/156 , H02M3/158 , H02M1/00 , H02M3/07 , H02M3/335 , H03K17/12 , H03K17/74 , H03K17/30
Abstract: A converter comprises a first switching element and a second switching element coupled between an input power source and an output capacitor and an inductor coupled to a common node of the first switching element and the second switching element, wherein the second switching element comprises a first diode and a first switch connected in series between a first terminal and a second terminal of the second switching element and a second diode connected between the first terminal and the second terminal of the second switching element.
-
公开(公告)号：US20200373839A1
公开(公告)日：2020-11-26
申请号：US16825789
申请日：2020-03-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Dianbo Fu , Heping Dai
Abstract: An apparatus includes comprises an auxiliary switch, a transformer and an auxiliary diode. The auxiliary switch is configured to be turned on prior to turning on a first power switch of a multi-level boost converter. The transformer has a primary winding connected between the first power switch and the auxiliary switch. The auxiliary diode is coupled between a secondary winding of the transformer and an output terminal of the multi-level boost converter. The transformer and the auxiliary switch are configured such that the first power switch is of zero voltage switching, and the auxiliary switch is of zero current switching.
-
公开(公告)号：US20200007050A1
公开(公告)日：2020-01-02
申请号：US16566242
申请日：2019-09-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Dianbo Fu , Zhaohui Wang , Lei Shi
IPC: H02M7/487 , H02M7/5387 , H02M1/088 , H02J3/38
Abstract: A method comprises during a first half cycle, configuring a first switch to operate as an always-on switch, turning on a second switch prior to turning on a third switch and turning off the third switch prior to turning off the second switch, wherein the first switch and the second switch are connected in series and further in parallel with the third switch between a first terminal of a power source and a filter and during a second half cycle, configuring a fourth switch to operate as an always-on switch, turning on a fifth switch prior to turning on a sixth switch and turning off the sixth switch prior to turning off the fifth switch, wherein the fourth switch and the fifth switch are connected in series and further in parallel with the sixth switch between a second terminal of the power source and the filter.
-
公开(公告)号：US10177683B2
公开(公告)日：2019-01-08
申请号：US15938193
申请日：2018-03-28
Applicant: Huawei Technologies Co., Ltd.
Abstract: A multi-level inverter includes a direct current input, a first bidirectional switch, a second bidirectional switch, a third capacitor, and an inverter. The direct current input includes a first capacitor and a second capacitor connected in series between positive and negative terminals of the direct current input power supply. The inverter includes a first switching tube, a second switching tube, a third switching tube, and a fourth switching tube that are connected in series co-directionally between the positive and negative terminals of the direct current input power supply. One terminal of the first bidirectional switch is connected to a connection point between the third switching tube and the fourth switching tube.
-
20.发明申请Five-Level Power Converter, and Control Method and Control Apparatus for the Same 审中-公开五电平转换器及其控制方法与控制装置公开(公告)号：US20140334199A1
公开(公告)日：2014-11-13
申请号：US14328992
申请日：2014-07-11
Applicant: Huawei Technologies Co., Ltd.
IPC: H02M5/458
CPC classification number: H02M5/4585 , H02M5/458 , H02M7/487
Abstract: A five-level power converter and a control method for the same are provided. The five-level power converter includes an inverter and at least a rectifier, where the rectifier includes at least one rectifier control circuit and four capacitors which are divided into two groups, each with two capacitors connected in parallel, where a first end of a first capacitor to a fourth capacitor is grounded; the rectifier control circuit is configured to input a current to a second end of the first capacitor to the fourth capacitor; and a polarity of charges accumulated at the second ends of the first capacitor and the second capacitor is opposite to a polarity of charges accumulated at the second ends of the third capacitor and the fourth capacitor; and the inverter includes a discharge control circuit, and a first inductor unit and a first load connected in series.
Abstract translation: 提供一种五电平转换器及其控制方法。 五电平功率转换器包括逆变器和至少一个整流器，其中整流器包括至少一个整流器控制电路和四个分为两组的电容器，每个电容器具有并联连接的两个电容器，其中第一端 电容到第四个电容器接地; 整流器控制电路被配置为向第四电容器输入电流到第一电容器的第二端; 并且在第一电容器和第二电容器的第二端累积的电荷的极性与在第三电容器和第四电容器的第二端累积的电荷的极性相反; 逆变器包括放电控制电路和串联连接的第一电感器单元和第一负载。
-
-
-
-
-
-
-
-
-
Search Results
23
records
(took 0.022 seconds)
