Patents Assigned to DELTA ELECTRONICS (SHANGHAI) CO., LTD.
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Patent number: 11961657Abstract: A multi-coil inductor includes a plurality of stacked inductor units. Each of the inductor units comprises: a magnetic core in which a magnetic path is formed; and a plurality of coils which are wound around the magnetic core to form at least one winding pair. Wherein a part of the magnetic path between the adjacent inductor units is shared. In the present invention, the leakage inductance is controlled and the may be magnetic saturation of magnetic core avoided by adjusting series and parallel connections among the coils.Type: GrantFiled: January 9, 2023Date of Patent: April 16, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Zengyi Lu, Haijun Yang, Shiwei Liu
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Patent number: 11961658Abstract: The present disclosure provides a three-phase inductor and a power module. A current flowing through each inductor of the three-phase inductor comprises a power-frequency current component and a high-frequency current component. The three-phase inductor includes a magnetic core and a winding. The magnetic core includes a first cover plate, a second cover plate and a magnetic pillar unit; the winding wound on the first magnetic pillar and the second magnetic pillar of the corresponding magnetic pillar unit, and a current flowing through the winding surrounds said first magnetic pillar and said second magnetic pillar in an opposite direction.Type: GrantFiled: April 12, 2021Date of Patent: April 16, 2024Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Zengyi Lu, Tianding Hong
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Patent number: 11936310Abstract: The present disclosure provides a three-phase AC system and a control method thereof. The method includes: receiving an output signal of the three-phase AC system and obtaining a characteristic value of the output signal according to the output signal; performing virtual synchronous generator control on the inverter to obtain a fundamental electric potential; extracting a harmonic component from the output signal and obtaining an error signal according to the harmonic component and a reference value of the harmonic component; controlling the error signal to obtain a harmonic compensation electric potential; obtaining a control electric potential by superimposing the harmonic compensation electric potential with the fundamental electric potential; obtaining a pulse signal by modulating the control electric potential, and obtaining a switching signal of the inverter according to the pulse signal.Type: GrantFiled: April 22, 2021Date of Patent: March 19, 2024Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Li Chen, Changyong Wang, Aibin Qiu
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Patent number: 11923265Abstract: A power module, including: a first conductor, disposed at a first reference plane; a second conductor, disposed at a second reference plane, wherein projections of the first and second conductors on the first reference plane have a first overlap area; a third conductor, disposed at a third reference plane; a plurality of first switches and a plurality of second switches, wherein at least one of the first switches and at least one of the second switches that are located on a left side are alternatively disposed, at least one of the first switches and at least one of the second switches that are located on a right side are alternately disposed, and the left side and the right side of the first overlap area are oppositely disposed. Heat sources of the power module are evenly distributed and its parasitic inductance is low.Type: GrantFiled: April 25, 2022Date of Patent: March 5, 2024Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Wei Cheng, Shouyu Hong, Dongfang Lian, Tao Wang, Zhenqing Zhao
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Patent number: 11921148Abstract: The disclosure discloses a method and device for monitoring partial discharge. The monitoring method including: step a, connecting a monitoring circuit in parallel to both ends of a tested product, disposing a ground wire between the monitoring circuit and ground, disposing a first sensor in the monitoring circuit, and disposing a ground wire sensor on the ground wire; step b, applying an excitation signal to the tested product, acquiring a first signal through the first sensor and acquiring a ground wire signal through the ground wire sensor within a monitoring cycle; and step c, determining whether the tested product has partial discharge through the first signal and the ground wire signal. The disclosure can avoid the partial discharge monitoring device from wrongly determining an interference signal to be a partial discharge signal, enhance anti-interference capability of the partial discharge monitoring device, and improve monitoring accuracy.Type: GrantFiled: August 2, 2022Date of Patent: March 5, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Lifeng Qiao, Dehui Zhang, Teng Liu
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Patent number: 11909311Abstract: An N-phase power converter has N phases with outputs connected in parallel and outputs connected in parallel. The converter comprises: N switch units, wherein each phase of the N-phase power converter comprises one of the N switch units; and an integrated inductor unit, comprising M inductor subunits, wherein M is a natural number greater than or equal to 2, each inductor subunit comprises i inductors, i is a natural number greater than or equal to 2, N>M×i or N=M×i, M×i of the inductors in the integrated inductor unit are respectively coupled to M×i of the N switch units, wherein: the i inductors of each of the inductor subunit are inverse-coupled to each other, the coupling coefficient between the M inductor subunits is less than the coupling coefficient between the i inductors in each of the inductor subunits.Type: GrantFiled: September 9, 2020Date of Patent: February 20, 2024Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Jinping Zhou, Min Zhou, Zhangnan Xin, Xinjian Zou
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Patent number: 11904699Abstract: A vehicle-mounted charging device is provided. The vehicle-mounted charging device includes a main body unit, at least one wireless charging coil and a plurality of wired charging units. The main body unit receives an input power, and provides at least one wireless charging power and a plurality of wired charging powers. The wireless charging coil is coupled to the main body unit for receiving the corresponding wireless charging power, and the wireless charging coil charges a wireless electronic device disposed thereon through electromagnetic coupling. Each wired charging unit includes a wire and an input terminal and an output terminal which are located at two sides of the wire respectively. The input terminal is coupled to the main body unit for receiving the corresponding wired charging power. The wired charging power is transmitted to the output terminal so as to charge the wired electronic device connected to the output terminal.Type: GrantFiled: July 15, 2021Date of Patent: February 20, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: May-Ling Chen, Benze Zou, Jianhong Zeng, Chao Li, Nan Ye
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Patent number: 11909330Abstract: A current control device and a power conversion system employing the current control device are provided. The current control device controls N power conversion unit(s), where N is a positive integer. The N power conversion units are connected in parallel when N is greater than 1. Each power conversion unit includes a signal input terminal and a current-controlled output terminal electrically connected to an external circuit. The current control device includes a first current sensor and an error compensator. The first current sensor samples a current flowing through the external circuit and acquires a sampling value. The error compensator receives the sampling value and a reference value and generates a compensation value accordingly, and outputs N current command(s) to the N power conversion unit(s) respectively according to the reference value and the compensation value.Type: GrantFiled: October 13, 2021Date of Patent: February 20, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Guoqiao Shen, Guojin Xu, Ning He, Daidong Pan
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Patent number: 11901114Abstract: A substrate includes a first insulation layer, a passive component, a first through-hole structure, a second insulation layer and a second electrode. The first insulation layer has a top surface and a bottom surface. The passive component is embedded in the first insulation layer. The passive component includes a first conducting terminal. The first through-hole structure is formed in the first insulation layer. The first through-hole structure includes a conductive part and an insulation part disposed within the conductive part. The conductive part is in contact with the first conducting terminal and formed as a first electrode. The second insulation layer is disposed on portion of the conductive part that is close to the bottom surface of the first insulation layer. At least part of the second electrode is disposed on the second insulation layer. The second electrode is in contact with the first insulation layer.Type: GrantFiled: September 9, 2020Date of Patent: February 13, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Shouyu Hong, Qingdong Chen, Xin Zou, Mingzhun Zhang, Jiaoping Huang, Jinping Zhou
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Patent number: 11901113Abstract: Provided are an inversely coupled inductor and a power module. The inversely coupled inductor includes a magnetic core, a first winding and a second winding, where a first passage is formed in the magnetic core; a part of the first winding and a part of the second winding pass through the first passage, and the first winding crosses with the second winding outside the first passage. The power supply module includes the above inversely coupled inductor, which is in turn stacked on, and electrically connected to, the packaged chip module. By arranging the two windings to cross with each other on the outside of the first passage of the magnetic core, the same type terminal (such as input pins or output pins) of the inversely coupled inductor can be located on the same side.Type: GrantFiled: January 7, 2020Date of Patent: February 13, 2024Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Pengkai Ji, Jinping Zhou, Shouyu Hong, Jianhong Zeng
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Patent number: 11901108Abstract: A power module includes a printed circuit board (PCB), a magnetic element, primary and secondary winding circuits and a regulator. The magnetic element is disposed on the PCB and has first to fourth sides. The second side is opposite to the first side, the fourth side is opposite to the third side. The primary winding circuit is disposed on the PCB and positioned in a vicinity of the first or second side. The secondary winding circuit is disposed on the first PCB and positioned in a vicinity of the third or fourth side. The regulator includes a switch disposed on the PCB, and coupled to the primary winding circuit. The at least one switch, the primary winding circuit, and the magnetic element are arranged in a first direction in order. A power device is also disclosed herein.Type: GrantFiled: November 20, 2020Date of Patent: February 13, 2024Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Jin-Fa Zhang, Hai-Jun Yang, Zhong-Wei Ke, Kai Dong, Shuai-Lin Du
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Patent number: 11894765Abstract: The present disclosure provides a power conversion device. The power conversion device includes the multi-level power factor correction circuit, the at least one output capacitor, the at least one input capacitor group, the first resonant conversion circuit and the second resonant conversion circuit. The at least one input capacitor group includes the first input capacitor and the second input capacitor. The at least one output capacitor is connected to an output part of the multi-level power factor correction circuit. The at least one input capacitor group is connected to the at least one output capacitor in parallel. The second input capacitor is connected to the first input capacitor in series. The input part of the first resonant conversion circuit is connected to first input capacitor in parallel. The input part of the second resonant conversion circuit is connected to the second input capacitor in parallel.Type: GrantFiled: June 16, 2022Date of Patent: February 6, 2024Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Yi-Chao Wang, Kai Dong, Shuai-Lin Du, Jin-Fa Zhang
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Patent number: 11885844Abstract: 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.Type: GrantFiled: August 2, 2022Date of Patent: January 30, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Jianxing Dong, Teng Liu, Xin Wang, Jianping Ying
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Patent number: 11888330Abstract: The present application provides a wireless charging transmitting apparatus, comprising: a charging module comprising a charging coil; a plurality of electromagnet units arranged around the charging coil to form an electromagnet array; and a control unit for acquiring state information of a charging receiving apparatus, generating configuration information of the respective electromagnet units, and activating and configuring the electromagnet units to be a magnetic structure matched with the charging receiving apparatus, and the control unit controlling the charging module. The application further provides a method for controlling charging using the wireless charging transmitting apparatus. According to the embodiments of the application, the wireless charging transmitting apparatus is effectively compatible with and adapted to various types of charging receiving apparatuses by configuring the electromagnet units according to the state information of the charging receiving apparatus.Type: GrantFiled: June 13, 2022Date of Patent: January 30, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Bin Li, Yayu Li, Shengyi Yang
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Patent number: 11881815Abstract: The application provides a photovoltaic inverter system, an automatic locating method of RSDs and a fault control method thereof. The automatic locating method comprises turning off all RSDs and sampling a voltage of an output end of each RSD as a first voltage before an inverter operates; turning on any one of the RSDs and sampling a voltage of the output end of each RSD as a second voltage, determining all RSDs in a photovoltaic module string to which the RSD in a turned-on state belongs according to the first voltage and the second voltage, and repeating the above control method for any one of the RSDs outside the photovoltaic module string to which the determined RSDs belong until corresponding connection relations between all RSDs and all photovoltaic module strings are determined.Type: GrantFiled: April 25, 2022Date of Patent: January 23, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Chengjun He, Feidong Xu, Xuancai Zhu
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Patent number: 11876084Abstract: A power supply system includes a system board electrically connected to a load; a first package and a second package provided on an upper side of the system board; and a bridge member provided on upper sides of the first package and the second package, comprising a passive element and used for power coupling between the first package and the second package, wherein vertical projections of the first package and the second package on the system board are both overlapped with a vertical projection of the bridge member on the system board, the first package, and the second package are encapsulated with switching devices, terminals on upper surfaces of the first package and the second package are electrically connected to the bridge member, and terminals on lower surfaces thereof are electrically connected to the system board.Type: GrantFiled: February 21, 2023Date of Patent: January 16, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Pengkai Ji, Shouyu Hong, Haoyi Ye, Jianhong Zeng
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Patent number: 11870359Abstract: Embodiments of the present application provide a transformer and a bidirectional isolated resonant converter, where the transformer includes a first side winding, a second side winding, and a magnetic core. The magnetic core includes a winding column, at least one side column and two connecting portions. The first side winding includes: a first side first winding and a first side second winding that are electrically connected, and the second side winding is located between the first side first winding and the first side second winding. An air gap is provided on the winding column, and the air gap is provided between the second side winding and a first end surface of the winding column, and a first side equivalent leakage inductance and a second side equivalent leakage inductance are obtained through the air gap.Type: GrantFiled: November 1, 2021Date of Patent: January 9, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Jinping Zhou, Mingzhun Zhang, Min Zhou
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Patent number: 11870342Abstract: A resonant converter includes primary and secondary circuits, a transformer, a resonant network and a control circuit. The control circuit is coupled to the primary circuit and the secondary circuit, and configured to control primary switches of the primary circuit operating with a switching frequency. At least one of primary switches is configured to be turned on from a first switching moment until a second switching moment. The control circuit is configured to control secondary switches of the secondary circuit, such that at least one of secondary switches is turned on during a first time interval to increase a current of the resonant network in a first flowing direction and an output current in a second flowing direction or equal to zero.Type: GrantFiled: November 30, 2021Date of Patent: January 9, 2024Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Hui Huang, Kun-Peng Wang, Shuai-Lin Du, Wei-Ke Yao, Feng Yao, Kai Dong, Jin-Fa Zhang
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Patent number: 11863065Abstract: A method for controlling a power module includes: configuring N cells in cascade connection, where N is a positive integer equal to or greater than 2, each cell comprising a bidirectional switching unit and a non-controlled rectifier bridge, the bidirectional switching unit being connected to central points of two bridge arms of the non-controlled rectifier bridge; controlling each cell to operate in one of three operating modes of a modulation mode, a bypass mode and a non-controlled rectifying mode, wherein in the N cells, m1 cells operate in the bypass mode, where 0?m1?M1, m2 cells operate in the non-controlled rectifying mode, where 0?m2?M2, m3 cells operate in the modulation mode and can realize power factor correction, where 0<m3; wherein m1+m2+m3=N, M1 is the allowable number of cells for bypass in the system, and M2 is the allowable number of cells for non-controlled rectification in the system.Type: GrantFiled: April 11, 2022Date of Patent: January 2, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Hong Liu, Wen Zhang, Dan Wang, Cheng Lu, Hongyang Wu
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Patent number: 11859923Abstract: The disclosure discloses a cooling system and an automatic coolant injection method for the cooling system. The cooling system includes a heat exchanger; a converter; a liquid cooling pipeline; a coolant tank with a liquid-level sensor; an injection pump for injecting coolant from the coolant tank into the liquid cooling pipe; and a control unit. When liquid level of the coolant tank reaches an upper threshold, the injection pump injects coolant into the liquid cooling pipeline. When pressure of the coolant in the liquid cooling pipe reaches an upper static liquid pressure threshold, the control unit turns off the injection pump, and executes the turning-on and turning-off operations of the circulation pump with a preset circulation period. The circulation pump forces the coolant to circulate in the liquid cooling pipeline when being turned on.Type: GrantFiled: November 18, 2021Date of Patent: January 2, 2024Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.Inventors: Tao Yang, Jun Chen, Jingxian Kuang, Dong Wang, Shunxi Huang, Qiquan Chen