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公开(公告)号：US10128832B2
公开(公告)日：2018-11-13
申请号：US14856869
申请日：2015-09-17
Applicant: DELTA ELECTRONICS, INC.
Inventor： Lizhi Xu , Weiyi Feng , Weiqiang Zhang , Hongyang Wu
Abstract: The present application discloses a converter system, a driving circuit and a driving method for a semiconductor switch. The driving circuit includes a driving unit, a sampling unit and a selection unit. A plurality of turn-off driving units with different turn-off parameters is provided in the driving unit, and a turn-off driving unit having a turn-off parameter adaptive to the working state of the semiconductor switch is selected according to the working state of the semiconductor switch so as to turn off the semiconductor switch.
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公开(公告)号：US20200076171A1
公开(公告)日：2020-03-05
申请号：US16423421
申请日：2019-05-28
Applicant: Delta Electronics,Inc.
Inventor： Lin Lan , Weiqiang Zhang
Abstract: The present disclosure relates to the technical field of power electronics, and provides a power supply system, including: a high-voltage input power distribution cabinet, a high-low voltage conversion cabinet, and a low-voltage output and control cabinet, wherein the high-low voltage conversion cabinet is provided with at least one high-voltage chamber and at least one low-voltage chamber, the high-low voltage conversion cabinet is further provided with an insulating partition between the high-voltage chamber and the low-voltage chamber, the low-voltage chamber is provided with a low-voltage bus bar, and the high-voltage chamber is provided with a high-voltage bus bar; the high-low voltage conversion cabinet is further provided with a plurality of power supply modules, and each of the power supply modules bridges the high-voltage chamber and the low-voltage chamber, the power supply module includes a high-voltage cavity, a low-voltage cavity and an isolation unit.
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公开(公告)号：US10917023B2
公开(公告)日：2021-02-09
申请号：US16423147
申请日：2019-05-27
Applicant: Delta Electronics, Inc.
Inventor： Xin Chen , Weiqiang Zhang , Shiqiang Hao , Hongyao Liu
Abstract: The present invention discloses a power conversion system and a method for pre-charging DC-Bus capacitors therein. The power conversion system comprises a plurality of power modules, each including a power input end; a charging input end; a power output end; at least one power conversion unit, each of the power conversion unit including at least one DC-Bus capacitor and being electrically connected to the power input end and the power output end; and a pre-charging unit electrically connected to the charging input end for receiving direct current and electrically connected to the DC-Bus capacitor for pre-charging the DC-Bus capacitor. The power input ends of the plurality of power modules are connected in series and then electrically connected to an AC power source, and the power output ends of the plurality of power modules are connected in parallel.
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公开(公告)号：US10432105B2
公开(公告)日：2019-10-01
申请号：US14993189
申请日：2016-01-12
Applicant: Delta Electronics, Inc.
Inventor： Hongyang Wu , Weiqiang Zhang , Lizhi Xu , Wei Guan
Abstract: The present disclosure provides a power frequency current converter, including: an input side and an output side, wherein a current of the input side or the output side is a power frequency current; a switching device; and a controller, configured to control the switching device to be turned on and turned off at an operating frequency, wherein within a half of a power frequency cycle, the controller generates at least two fixed-frequency control signals and the operating frequency of the switching device alters at least twice according to the at least two fixed-frequency control signals, so as to reduce junction temperature of the switching device.
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Patent Agency Ranking
公开(公告)号：US11496053B2
公开(公告)日：2022-11-08
申请号：US17142246
申请日：2021-01-06
Applicant: Delta Electronics, Inc.
Inventor： Weiqiang Zhang
Abstract: A power conversion system comprises a plurality of power modules, each including a power input end; a charging input end; a power output end; at least one power conversion unit, each including an AC/DC conversion unit and at least one DC-Bus capacitor and being connected to the power input end and the power output end; and a pre-charging unit connected to the charging input end for receiving direct current and connected to the DC-Bus capacitor. The pre-charging unit starts to charge the DC-Bus capacitor of one of the power modules when said power module breaks down or the load of the power conversion system is light so that no current flows through the AC/DC conversion unit. The power input ends of the power modules are connected in series and then connected to an AC power source, and the power output ends of the power modules are connected in parallel.
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公开(公告)号：US10986745B2
公开(公告)日：2021-04-20
申请号：US16564146
申请日：2019-09-09
Applicant: Delta Electronics, Inc.
Inventor： Wei Zhou , Yicong Xie , Weiqiang Zhang
Abstract: An insulated housing, in a cylindrical structure, includes an inner metal layer, an insulating layer and an outer metal coating. The insulating layer is positioned between the inner metal layer and the outer metal coating. In any end of the cylindrical structure, both a distance from the end of the inner metal layer to the end of the cylindrical structure and a distance from the end of the outer metal coating to the end of the cylindrical structure are not equal to zero, and the distance from the end of the inner metal layer to the end of the cylindrical structure is larger than the distance from an end of the outer metal coating to the end of the cylindrical structure. The inner metal layer is composed of one first metal cylinder and two second metal cylinders respectively disposed on the both ends of the first metal cylinder.
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公开(公告)号：US10886711B2
公开(公告)日：2021-01-05
申请号：US16423421
申请日：2019-05-28
Applicant: Delta Electronics, Inc.
Inventor： Lin Lan , Weiqiang Zhang
Abstract: Disclosed is a power supply system, including: a high-voltage input power distribution cabinet, a high-low voltage conversion cabinet, and a low-voltage output and control cabinet, the high-low voltage conversion cabinet is provided with at least one high-voltage chamber provided with a high-voltage bus bar, at least one low-voltage chamber provided with a low-voltage bus bar, an insulating partition between the high-voltage chamber and the low-voltage chamber and a plurality of power supply modules; each of the power supply modules bridges the high-voltage and low-voltage chambers and includes a high-voltage cavity, a low-voltage cavity and an isolation unit, the high-voltage and low-voltage cavities are respectively disposed corresponding to the high-voltage and low-voltage chambers and electrically connected to the high-voltage and low-voltage bus bars respectively, and the isolation unit is connected to one end of the high-voltage cavity and one end of the low-voltage cavity.
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公开(公告)号：US11600423B2
公开(公告)日：2023-03-07
申请号：US16403697
申请日：2019-05-06
Applicant: Delta Electronics, Inc.
Inventor： Peng Ma , Yicong Xie , Lin Lan , Weiqiang Zhang
Abstract: The present disclosure provides a transformer including at least one magnetic core each having at least one window; one primary side winding passing through the at least one window, a wire forming the primary side winding being sequentially covered with a first solid insulating layer, a grounded shielding layer and a second solid insulating layer from inside to outside along a radial direction of the wire, the grounded shielding layer being connected to a reference ground; and at least one secondary side winding, each passing through the at least one window, the primary side winding having a first voltage with respect to the reference ground, the secondary side winding having a second voltage with respect to the reference ground, and the second voltage being greater than 50 times of the first voltage.
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公开(公告)号：US11245259B2
公开(公告)日：2022-02-08
申请号：US17087831
申请日：2020-11-03
Applicant: Delta Electronics, Inc.
Inventor： Lin Lan , Weiqiang Zhang
Abstract: Disclosed is a power supply system, including: a high-voltage input power distribution cabinet, a high-low voltage conversion cabinet, and a low-voltage output and control cabinet, the high-low voltage conversion cabinet is provided with at least one high-voltage chamber provided with a high-voltage bus bar, at least one low-voltage chamber provided with a low-voltage bus bar, an insulating partition between the high-voltage chamber and the low-voltage chamber and a plurality of power supply modules; each of the power supply modules bridges the high-voltage and low-voltage chambers and includes a high-voltage cavity, a low-voltage cavity and an isolation unit, connecting terminals of the high-voltage and low-voltage cavities are respectively disposed corresponding to the high-voltage and low-voltage chambers and electrically connected to the high-voltage and low-voltage bus bars respectively, and the isolation unit is connected to one end of the high-voltage cavity and one end of the low-voltage cavity.
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