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公开(公告)号：US20240234004A9
公开(公告)日：2024-07-11
申请号：US18360839
申请日：2023-07-28
发明人： Teng LIU , Jianxing DONG , Xiaohu LI , Liang WANG , Lei CHEN
CPC分类号： H01F27/022 , H01F27/24 , H01F27/327 , H01F41/127
摘要： The present disclosure discloses a planar magnetic element and a manufacturing method thereof. The planar magnetic element includes: a housing, with an internal space; a core, accommodated in the internal space of the housing, and the core including at least one limb; at least one planar winding corresponding to the limb; and potting adhesive, filled in all air gaps in the internal space of the magnetic element, and blocking the clearance and creepage path between the planar winding and the core and/or between the two planar windings. The present disclosure may significantly reduce the volume of the magnetic element and greatly increase the partial discharge extinction voltage, thereby reducing the partial discharge risk of the magnetic element and improving the reliability. Moreover, the compact structure of the planar magnetic element is conducive to improving the power density of the module.
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公开(公告)号：US20230041739A1
公开(公告)日：2023-02-09
申请号：US17816730
申请日：2022-08-02
发明人： Jianxing DONG , Teng LIU , Xin WANG , Jianping YING
摘要： The disclosure discloses a method and device for detecting insulation state in a conversion system, wherein the conversion system includes an excitation source, a converter having an input end coupled to the excitation source, a connection element coupled between an output end of the converter and a reference point, and a coupling impedance having a first end coupled to the excitation source and a second end coupled to the reference point, the method for detecting insulation state including steps of: S1, controlling at least one main power switch of the converter not to switch; S2, detecting a pulse current signal of the connection element; and S3, processing the pulse current signal and outputting a partial discharge information, the partial discharge information indicating an insulation state of an isolating transformer in the converter. The disclosure can overcome electromagnetic interference of high frequency steep waves on a partial discharge signal.
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公开(公告)号：US20210376753A1
公开(公告)日：2021-12-02
申请号：US17314663
申请日：2021-05-07
发明人： Teng LIU , Jianping YING , Lifeng QIAO , Xin WANG , Hongwei XIAO
摘要： A conversion device includes: an inductor connected to the AC power grid; a first-stage converter configured to output a bus voltage based on the AC power grid; a second-stage converter configured to convert the bus voltage into an output voltage to the load; and a filtering network, wherein a first resistance-capacitance circuit is disposed between the first and third terminals of the filtering network, a second resistance-capacitance circuit is disposed between the second and third terminals of the filtering network, the first terminal of the filtering network is connected to the AC power grid, the second terminal of the filtering network is connected to the bus or the second terminal of the second-stage converter, and the third terminal of the filtering network is grounded through a first capacitor.
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公开(公告)号：US20210359611A1
公开(公告)日：2021-11-18
申请号：US17316873
申请日：2021-05-11
发明人： Pian ZHOU , Teng LIU , Dehai LOU , Hongwei XIAO , Yi ZHANG
摘要： The present disclosure provides a control method for a DC converter and a DC converter. the DC converter comprises a switching circuit, a sampling circuit, and a controller, the method comprising: acquiring a duty ratio of a Burst cycle according to an output reference signal and an output signal; acquiring a first number of switching cycles and a burst on time according to the duty ratio of the Burst cycle, a first preset value, and a switching period of the switching device; acquiring a Burst cycle value according to the burst on time and the duty ratio of the Burst cycle; and generating a driving signal according to the Burst cycle value, the first number of switching cycles, and the switching period.
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公开(公告)号：US20200312516A1
公开(公告)日：2020-10-01
申请号：US16835304
申请日：2020-03-31
发明人： Yong ZENG , Teng LIU , Jianxing DONG
摘要： A transformer comprises an iron core, a support module, a winding unit, a potting box. The potting box includes an inner wall, an outer wall and a bottom plate and the inner wall is sleeved in the outer wall. The bottom plate is connected to a bottom portion of the inner wall and a bottom portion of the outer wall and a potting space is defined by the outer wall, the inner wall and the bottom plate. The winding unit is disposed in the potting space and a magnetic pole of the iron core penetrates through an inner side of the inner wall of the potting box. The support module is disposed between at least one end surface of the potting box and a cover of the iron core to form an insulation clearance. The support odule is close to the inner wall of the potting box.
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公开(公告)号：US20210376739A1
公开(公告)日：2021-12-02
申请号：US17314105
申请日：2021-05-07
发明人： Teng LIU , Jianping YING , Lifeng QIAO , Xin WANG , Hongwei XIAO
摘要： A conversion device comprises: an inductor electrically connected to the AC power grid; a first-stage converter configured to output a bus voltage according to the AC power grid, wherein the first-stage converter comprises an N-level alternating current-direct current (AC-DC) converter, and the N-level AC-DC converter comprises a plurality of switch bridge arms, wherein both an upper bridge arm and a lower bridge arm of each of the plurality of switch bridge arms of the N-level AC-DC converter include a plurality of semiconductor devices connected in series, and a rated withstand voltage Vsemi of each of the semiconductor devices is greater than or equal to (Vbus*δ)/((N−1)*Nseries*λ); and a second-stage converter configured to convert the bus voltage into an output voltage to supply energy to the load.
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公开(公告)号：US20200312517A1
公开(公告)日：2020-10-01
申请号：US16835764
申请日：2020-03-31
发明人： Yong ZENG , Jianxing DONG , Qiang WANG , Teng LIU , Weijun WANG
摘要： A potting box for assembling a transformer comprises an inner wall and an outer wall. The inner wall is sleeved in the outer wall. A bottom plate connected to a bottom portion of the inner wall and a bottom portion of the outer wall to form a potting space for accommodating a first winding and a second winding. An inner side of the outer wall comprises a first support portion for supporting the first winding and an outer side of the inner wall comprises a second support portion for supporting the second winding. An iron core of the transformer penetrates through an inner side of the inner wall.
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公开(公告)号：US20140118946A1
公开(公告)日：2014-05-01
申请号：US13846679
申请日：2013-03-18
发明人： Aixing TONG , Teng LIU
IPC分类号： H05K7/20
CPC分类号： H05K7/20909 , H01F27/2876 , H01F27/322
摘要： The present disclosure provides a high-power electromagnetic assembly comprising an iron core and a coil winding around the iron core, the coil having at least one coil layer, wherein a heat sink is provided between the iron core and an adjacent coil layer and/or between two adjacent coil layers. The heat sink comprises a first panel, a second panel and multiple supporting structures in connection with the first and second panels, and the first panel, the second panel and the supporting structures together constitute multiple air channels for cooling airflows passing therethrough.
摘要翻译： 本公开提供了一种高功率电磁组件，其包括铁芯和围绕铁芯缠绕的线圈，线圈具有至少一个线圈层，其中在铁芯和相邻线圈层之间设置散热器和/或 在两个相邻的线圈层之间。 散热器包括第一面板，第二面板和与第一和第二面板连接的多个支撑结构，并且第一面板，第二面板和支撑结构一起构成多个空气通道，用于冷却通过其中的气流。
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公开(公告)号：US20230216423A1
公开(公告)日：2023-07-06
申请号：US18069266
申请日：2022-12-21
发明人： Lifeng QIAO , Dehai LOU , Teng LIU , Jianping YING , Zhiqiang DAI
CPC分类号： H02M7/003 , H05K1/181 , H05K7/20918 , H05K2201/10015 , H05K2201/10166
摘要： A power converter includes a PCB having opposing first and second sides, and a plurality of first commutation units and first capacitor unit disposed on the PCB. Each first commutation unit includes a first discrete component and a second discrete component. The second end of the first discrete component is electrically coupled to the first end of the second discrete component, and the first capacitor unit is electrically coupled to the first ends of the first discrete components and the second ends of the second discrete components in the plurality of first commutation units, respectively. The first discrete components and the second discrete components in the plurality of first commutation units are arranged in a row. The first discrete component and the second discrete component in each first commutation unit form a commutation loop together with the first capacitor unit.
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公开(公告)号：US20230208133A1
公开(公告)日：2023-06-29
申请号：US18145053
申请日：2022-12-22
发明人： Guangcheng HU , Yuncheng WANG , Teng LIU , Peng XIAO
CPC分类号： H02J1/102 , H02J7/00036 , H02J7/00714
摘要： Provided is a hybrid DC chained energy storage converter, including: a positive DC bus; a negative DC bus; a main circuit inductor; at least one high frequency sub module, including a first switch circuit and a first capacitor connected in parallel; a plurality of low frequency sub modules each including a second switch circuit and an energy storage element connected in parallel, the main circuit inductor, the at least one high frequency sub module and the plurality of low frequency sub modules being connected in series to form a series branch, and the series branch being connected to the positive DC bus and the negative DC bus, respectively; and a controller, coupled to the first switch circuit of the at least one high frequency sub module and second switch circuits of the plurality of low frequency sub modules, respectively.
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