Patents Assigned to DELTA ELECTRONICS (SHANGHAI) CO., LTD.
  • Publication number: 20190280687
    Abstract: The present disclosure discloses a gate voltage control circuit of an IGBT and a control method thereof. The gate voltage control circuit of the IGBT comprises a voltage control circuit, an active clamping circuit and a power amplifier circuit. A control voltage outputted by the voltage control circuit indirectly controls a gate voltage of the IGBT, so as to achieve a better control of the gate voltage of the IGBT with a smaller loss. It may prevent the active clamping circuit from a too-early response and may increase the active clamping circuit response speed; and may avoid the voltage oscillation of the collector-emitter voltage Vce and the gate voltage Vge, and may improve the reliability of the IGBTs connected in series.
    Type: Application
    Filed: May 28, 2019
    Publication date: September 12, 2019
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Jianping YING, Ming WANG, Xiaobo HUANG, Jun LIU, Lifeng QIAO, Xin WANG
  • Patent number: 10411459
    Abstract: A photovoltaic power generation system includes a plurality of photovoltaic arrays, a plurality of shutdown units and an inverter. The shutdown unit is adjacent to the corresponding photovoltaic array, connected in parallel with the corresponding photovoltaic array, and electrically connected to the inverter via high voltage wires; the photovoltaic power generation system further includes a control unit configured to receive a detection signal indicating a state of the AC side of the inverter, monitor whether the AC side of the inverter is in a power-off state according to the detection signal, and generate a first power-off signal when the AC side of the inverter is in the power-off state; and the shutdown units are configured to receive the first power-off signal, and stop a power transmission from the photovoltaic arrays to the inverter according to the first power-off signal.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: September 10, 2019
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Xuancai Zhu, Bingwen Weng, Jianming Chen, Yafeng Liao, Jinfa Zhang
  • Patent number: 10411608
    Abstract: A converter circuit includes an inverter and a controller. The inverter is configured to receive an input voltage and to convert the input voltage into a primary-side alternating-current (AC) voltage in a first inversion mode or a second inversion mode. Each of a first switch unit and a second switch unit in the inverter includes switches. When the converter circuit works in the first inversion mode, the controller controls switches of the first switch unit and the second switch unit to cooperatively switch on and switch off periodically according to an output voltage corresponding to the primary-side AC voltage. When the converter circuit works in the second inversion mode, the controller controls the first switch unit to operate independently, in which the switches of the first switch unit switch on and switch off periodically.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: September 10, 2019
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Yi-Qing Ye, Chao Yan, Li-Ping Sun
  • Patent number: 10411479
    Abstract: A detection circuit includes: a first switch, a second switch, a first detection resistor and a second detection resistor, wherein the first switch and the first detection resistor are coupled in series to form a first branch, a first end of the first branch is electrically connected with a positive bus of the photovoltaic inverter and a second end of the first branch is electrically connected with a ground; and the second switch and the second detection resistor are coupled in series to form a second branch, a first end of the second branch is electrically connected with a negative bus of the photovoltaic inverter and a second end of the second branch is electrically connected with the ground.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: September 10, 2019
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Bingwen Weng, Xuancai Zhu, Kerou Wang, Jinfa Zhang
  • Patent number: 10411474
    Abstract: An electric power system includes a variable-frequency drive and a control module. The variable-frequency drive includes a first power converter, a second power converter and at least one energy storage module. The first power converter is connected between a DC bus and a power terminal. Moreover, electric energy is transferred between the first power converter and the power terminal at a first power. The second power converter is connected between the DC bus and an electric/kinetic energy conversion device. Moreover, electric energy is transferred between the second power converter and the electric/kinetic energy conversion device at a second power. As the second power is dynamically changed, the control module controls a charge/discharge operation of the at least one energy storage module. As a consequence, the operational change of the electric/kinetic energy conversion device is reversely compensated.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: September 10, 2019
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Changyong Wang, Fei Lu
  • Patent number: 10389241
    Abstract: A power supply converter and a method for manufacturing the same are provided. The power supply converter includes an inductance component and a power component, wherein the inductance component includes: a first magnetic substrate, provided with a first via, the first magnetic substrate including a first surface and a second surface, and a first pin being provided on the first surface; a second magnetic substrate, provided with a second via, and having a second surface provided with a second pin; an inductance coil, provided between the first surface and the second surface and having a first end and a second end formed at the vias and connected to the first and second pin, respectively; and a filling part, at least partly filling the vias, wherein the power component and the inductance component are stacked, are in contact and are coupled to each other.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: August 20, 2019
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Jianhong Zeng, Yu Zhang, Min Zhou, Jinping Zhou
  • Publication number: 20190252115
    Abstract: A high voltage transformer apparatus, including: a tank; a high voltage transformer, disposed upright on one side within the tank, including a first transformer unit configured to generate a positive voltage and a second transformer unit configured to generate a negative voltage; a positive high voltage terminal and a negative high voltage terminal respectively disposed on the other side within the tank opposite to the first transformer unit and the second transformer unit; a first circuit board disposed between the first transformer unit, the first side wall, and the positive high voltage terminal; and a second circuit board disposed between the second transformer unit, the second side wall, and the negative high voltage terminal; wherein the first and second circuit boards are respectively configured to rectify, filter and sample the positive and negative voltages.
    Type: Application
    Filed: January 18, 2019
    Publication date: August 15, 2019
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Dong WEI, Yao TAO, Hongyuan JIN, Dezhi JIAO
  • Publication number: 20190254166
    Abstract: The present disclosure provides a power supply module used in a smart terminal and a power supply module assembly structure, the power supply module includes a substrate having first and second surfaces opposite to each other; a power passive element, an active element and a plurality of first conductive parts disposed at the substrate; the power passive element being independently disposed on the first surface of the substrate as a whole; wherein a maximum height of the power passive element disposed on the first surface of the substrate is greater than a sum of a maximum height of an element disposed on the second surface of the substrate and an half of the thickness of the substrate.
    Type: Application
    Filed: January 30, 2019
    Publication date: August 15, 2019
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Pengkai JI, Jianhong ZENG, Yu ZHANG, Shouyu HONG, Jinping ZHOU, BAU-RU LU
  • Publication number: 20190252114
    Abstract: The present disclosure relates to a magnetic component, a converter and an inductor. The magnetic component includes a magnetic core including a first winding window, a second winding window and a third winding window; and a winding including a first winding, a second winding and a third winding, which are wound in the first winding window, the second winding window and the third winding window, respectively, wherein when an alike current flows through the first winding, a second winding and the third winding, magnetic fluxes respectively generated in magnetic core units forming the first winding window and the second winding window are superposed on a first common magnetic column therebetween, and magnetic fluxes respectively generated in magnetic core units forming the second winding window and the third winding window are superposed on a second common magnetic column therebetween.
    Type: Application
    Filed: December 6, 2018
    Publication date: August 15, 2019
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Zengyi LU, Xinwei LIU, Shiwei LIU, Xingkuan GUO, Jinfa ZHANG
  • Patent number: 10381286
    Abstract: A power module is disclosed. The power module includes a first substrate, a first metal layer, at least one conductive structure and at least one power device. The first metal layer is disposed on the first substrate. The first metal layer has a first thickness d1. The first thickness d1 satisfies: 5 ?m?d1?50 ?m. The conductive structure is disposed at a position different to the first metal layer on the first substrate. The conductive structure has a second thickness d2. The second thickness d2 satisfies: d2?100 ?m. The power device is disposed on the first substrate, the first metal layer or the conductive structure. The driving electrode of the power device is electrically connected to the first metal layer. The power electrode of the power device is electrically coupled to the conductive structure.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: August 13, 2019
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Shou-Yu Hong, Gan-Yu Zhou, Jian-Hong Zeng, Zhen-Qing Zhao
  • Patent number: 10381934
    Abstract: A multiple parallel-connected resonant converter, an inductor-integrated magnetic element and a transformer-integrated magnetic element are provided. The multiple parallel-connected resonant converter includes a first and a second converters. The first converter having a first input and output end includes a first inductor, a first transformer and a first capacitor connected in series. The second converter having a second input and output end includes a second inductor, a second transformer and a second capacitor connected in series. The second output end is connected with the first output end in parallel. The first and second inductor are integrated in a first magnetic element, the first magnetic element includes a first and second side column, and a first and second central column. The first inductor includes a first coil positioned around the first central column and the second inductor includes a second coil positioned around the second central column.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: August 13, 2019
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Haijun Yang, Zengyi Lu, Weilong Xia, Yajiang Yan
  • Publication number: 20190244747
    Abstract: The present disclosure provides a heat dissipation structure for a magnetic component and a magnetic component having the same. The magnetic component includes a plurality of heat dissipation pins, which are disposed on the winding of the magnetic component, wherein the magnetic component has one or more windings. The heat dissipation structure includes a circuit board on which a plurality of heat dissipation channels are disposed, and the heat dissipation pins of the windings are in contact with the heat dissipation channels; a plurality of heat conduction portions are disposed correspondingly under the heat dissipation channels of the circuit board; a heat conduction layer is arranged under the heat conduction portions and contacts with the heat conduction portions; and a heat dissipation layer is arranged under the heat conduction layer and contacts with the heat conduction layer.
    Type: Application
    Filed: January 4, 2019
    Publication date: August 8, 2019
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Chao YAN, Zejun WANG, Yiwen LU, Zhihua LI
  • Publication number: 20190245432
    Abstract: A power converter and a method of controlling the power converter are provided. The power converter includes a PFC rectifier module and a DC-DC converter module. When the output voltage of the power converter is greater than or equal to a minimum limit value of the bus voltage output by the PFC rectifier module, the DC-DC converter module is operated in a constant-on mode in which the DC-DC converter module does not perform voltage conversion and the PFC rectifier module outputs the bus voltage which is adjusted according to the output voltage of the power converter. When the output voltage of the power converter is less than the minimum limit value, the DC-DC converter module is operated in a voltage-regulation mode in which the DC-DC converter module converts the bus voltage into the output voltage of the power converter, and the bus voltage is a constant value.
    Type: Application
    Filed: January 10, 2019
    Publication date: August 8, 2019
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Chao YAN, Yiwen LU, Liping SUN, Zhihui DING, Qi HUANG
  • Publication number: 20190245433
    Abstract: The invention provides a water-cooling power supply module, comprising: a water-cooling plate; a power supply module disposed on the water-cooling plate, comprising: a capacitor module, a power module, a plurality of inductor modules and input/output filter module arranged in sequence on the surface of the water-cooling plate, and a control module disposed above the capacitor module or the power module at least used for controlling the power module; wherein water channels in the water-cooling plate are designed such that the cooling water flows through the power module, the inductor modules and the input/output filter module in sequence.
    Type: Application
    Filed: January 28, 2019
    Publication date: August 8, 2019
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Chao YAN, Liping SUN, Gemin PANG, Jian ZHU
  • Patent number: 10374504
    Abstract: A power unit includes: a plurality of power converters, a first output terminal of one of two adjacent power converters among the plurality of power converters is connected successively to a second output terminal of the other one of the two adjacent power converters; a local controller configured to output a plurality of control signals; and a plurality of driving circuits configured to output driving signals according to the plurality of control signals, to drive the plurality of power semiconductor switches to be turned on and off, wherein the control signals corresponding to the power semiconductor switches in the same position of the plurality of power converters are the same, the power semiconductor switches in the same position of the plurality of power converters are simultaneously turned on and off.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: August 6, 2019
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Jianping Ying, Ming Wang, Xiaobo Huang, Jun Liu
  • Patent number: 10373754
    Abstract: A power supply module having two output voltages includes an inductor module and a main board. The inductor module includes a first magnetic core, a second magnetic core, an intermediate magnetic core disposed therebetween, a first winding and a second winding. The first winding is disposed on one of a magnetic column of the first magnetic core and a magnetic column of the intermediate magnetic core to form a first inductor. The second winding is disposed on one of a magnetic column of the second magnetic core and a magnetic column of the intermediate magnetic core to form a second inductor. There is no air gap at a portion of the intermediate magnetic core where magnetic paths of the first and second inductors pass through together. The inductor module is disposed on the main board. The first winding and the second winding are electrically connected with the main board.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: August 6, 2019
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Zengyi Lu, Shaohua Zhu, Haijun Yang
  • Patent number: 10374522
    Abstract: The present invention relates to a control method for balancing a neutral point voltage of a three-level circuit, comprising obtaining the neutral point voltage through sampling, adjusting a duty ratio of a zero level in one phase to maintain balance of the neutral point voltage when an absolute value of the neutral point voltage is larger than a threshold value, and distributing duty ratios of positive and negative levels in the phase, such that an output voltage of switch bridge arm in the phase includes positive, negative and zero levels in at least one switch period. The present invention can be carried out in a three-phase four-wire system and a three-phase three-wire system. In the three-phase three-wire system, it may also be combined with zero sequence voltage injection to form a mixed modulation method, thereby acquiring more effective neutral point balance control performance, and reducing switch loss.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: August 6, 2019
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Hong Liu, Hao Peng, Cheng Lu
  • Publication number: 20190235590
    Abstract: The disclosure provides a system of providing power to a chip on a mainboard, including: a preceding-stage power supply, located on a mainboard, and configured to receive a first DC voltage and to provide a second DC voltage, wherein the first DC voltage is greater than the second DC voltage; and a first post-stage power supply and a second post-stage power supply, located on the mainboard, to receive the second DC voltage, the first post-stage power supply is disposed at a first side of the chip, the second post-stage power supply is disposed at a second side of the chip, the first post-stage power supply provides a third DC voltage to the chip, the second DC voltage is greater than the third DC voltage, the second post-stage power supply provides a fourth DC voltage to the chip, and the second DC voltage is greater than the fourth DC voltage.
    Type: Application
    Filed: January 18, 2019
    Publication date: August 1, 2019
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Haoyi YE, Jianhong ZENG, Xiaoni XIN
  • Patent number: 10367496
    Abstract: The present disclosure discloses a gate voltage control circuit of an IGBT and a control method thereof. The gate voltage control circuit of the IGBT comprises a voltage control circuit, an active clamping circuit and a power amplifier circuit. A control voltage outputted by the voltage control circuit indirectly controls a gate voltage of the IGBT, so as to achieve a better control of the gate voltage of the IGBT with a smaller loss. It may prevent the active clamping circuit from a too-early response and may increase the active clamping circuit response speed; and may avoid the voltage oscillation of the collector-emitter voltage Vce and the gate voltage Vge, and may improve the reliability of the IGBTs connected in series.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: July 30, 2019
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Jianping Ying, Ming Wang, Xiaobo Huang, Jun Liu, Lifeng Qiao, Xin Wang
  • Publication number: 20190229551
    Abstract: The power distribution device includes a power regulating device and a first auxiliary power distribution component. The power regulating device has a first output end connected to an AC power grid and a second output end. The first auxiliary power distribution component has a first movable end electrically connected to a load, a first fixed end electrically connected to the AC power grid and a second fixed end electrically connected to the second output end, and a ground line of the second fixed end is grounded. When the AC power grid is normal, the first movable end is connected to the first fixed end, such that the AC power grid supplies power to the load. And when the AC power grid is abnormal, the first movable end is connected to the second fixed end, such that the power regulating device supplies power to the load through the second output end.
    Type: Application
    Filed: January 9, 2019
    Publication date: July 25, 2019
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Feiqin HAO, Hongyang WU, Chao YAN