Patents by Inventor Jianping Ying

Jianping Ying has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210376753
    Abstract: 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.
    Type: Application
    Filed: May 7, 2021
    Publication date: December 2, 2021
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Teng LIU, Jianping YING, Lifeng QIAO, Xin WANG, Hongwei XIAO
  • Publication number: 20210376739
    Abstract: 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*?)/((N?1)*Nseries*?); and a second-stage converter configured to convert the bus voltage into an output voltage to supply energy to the load.
    Type: Application
    Filed: May 7, 2021
    Publication date: December 2, 2021
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Teng LIU, Jianping YING, Lifeng QIAO, Xin WANG, Hongwei XIAO
  • Publication number: 20210376758
    Abstract: Disclosed are a control method and control system for a modular multilevel converter and a power transmission system. The control method comprises: calculating an actual capacitor voltage of the sub-module; calculating a reference capacitor voltage of the sub-module; dividing the plurality of sub-modules into a plurality of modules, reference capacitor voltages of the sub-modules in the same module are the same, and reference capacitor voltages of the sub-modules from different modules are different; sorting in the module to obtain a first voltage sequence; sorting among different modules to obtain a second voltage sequence; and determining the sub-modules to be switched on or switched off according to charging and discharging states of the sub-module, the first voltage sequence and the second voltage sequence, until an actual level of the bridge arm is consistent with a desired level, wherein the desired level changes using a first preset value as a step.
    Type: Application
    Filed: May 30, 2021
    Publication date: December 2, 2021
    Inventors: Jianping YING, Yi ZHANG, Zhao WANG, Erdong CHEN
  • Patent number: 11183947
    Abstract: A modular power supply system is configured to include: a main controller, configured to output a main control signal; N local controllers, wherein each of the local controllers is configured to receive the main control signal to output at least one local control signal; N auxiliary power supplies, in one-to-one correspondence with the N local controllers, wherein each of the auxiliary power supplies is configured to provide power to the corresponding local controller, and N power units, in one-to-one correspondence with the N local controllers, wherein each of the power units includes a first end and a second end, the second end of each of the power units is connected to the first end of an adjacent one of the power units, each of the power units is configured to include M power converters, each of the power converters is configured to operate according to the local control signal.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: November 23, 2021
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Jianping Ying, Ming Wang, Xiaobo Huang, Jun Liu, Zhiming Hu
  • Patent number: 11101740
    Abstract: A modular power supply system includes: a main controller, configured to output a main control signal; N local controllers, wherein each of the local controllers is configured to receive the main control signal to output at least one local control signal; and N power units, in one-to-one correspondence with the N local controllers, wherein each of the power units includes a first end and a second end, and the second end of each of the power units is connected to the first end of an adjacent one of the power units, each of the power units is configured to include M power converters, wherein each of the power converters includes a third end and a fourth end, the fourth end of each of the power converters is connected to the third end of an adjacent one of the power converters.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: August 24, 2021
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Jianping Ying, Ming Wang, Xiaobo Huang, Jun Liu, Zhiming Hu
  • Patent number: 11063427
    Abstract: Disclosed is a surge control circuit, including: an absorption circuit including an absorption element and a bypass switch which are connected in series, a switch group connected in parallel to both ends of the absorption circuit and a first control circuit electrically connected to the switch group and bypass switch respectively. Normally, the first control circuit controls the switch group and the bypass switch to turn on simultaneously, makes the current flow through the switch group; when detecting the current is greater than or equal to the first preset current value, or the current increase rate is greater than or equal to the preset current rate of change, the first control circuit controls the switch group to turn off, makes the current flow through the absorption circuit; when detecting the current is less than the second preset current value, the first control circuit controls the bypass switch to turn off.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: July 13, 2021
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: JianPing Ying, Wuying Li, Lifeng Qiao, Teng Liu
  • Patent number: 11037723
    Abstract: A transformer includes a magnetic core, a first winding and at least one second winding. The magnetic core has a window through which the first winding passes through without contacting the magnetic core. The second winding passes through the window of the magnetic core and is wound on the magnetic core. The second winding has a distance from the first winding, and a semi-conductive part is disposed between the second winding and the magnetic core. The present disclosure can effectively lower the risk of partial discharge between the second winding and the magnetic core, and thus the transformer of the present disclosure has high reliability.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: June 15, 2021
    Assignee: Delta Electronics, Inc.
    Inventors: Jianxing Dong, Jianping Ying, Teng Liu
  • Patent number: 10991504
    Abstract: A magnetic assembly includes a magnetic core and a winding. The magnetic core comprises an upper cover, a lower cover and at least one core column provided between the upper cover and the lower cover, the core column presents a prismatic shape and has at least two lateral surfaces, the lateral surfaces intersect with each other to form at least two longitudinal ridges, and the longitudinal ridge extends along the longitudinal direction of the core column. The winding, winding around the core column, a first semi-conductive component is provided between the core column and the winding at the position corresponding to the longitudinal ridge.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: April 27, 2021
    Assignee: Delta Electronics, Inc.
    Inventors: Jianxing Dong, Yong Zeng, Teng Liu, Jianping Ying
  • Patent number: 10943754
    Abstract: Disclosed is a circuit breaker apparatus, including a first switching assembly, a first controller, a second switching assembly and a second controller. The first switching assembly is connected in series between a positive pole of a power supply and a load. The first switching assembly includes multiple first switching units in series. The first controller is electrically connected to a first pre-set reference potential of the first switching assembly. The first controller is electromagnetically coupled with each first switching unit through a first transformer unit. The second switching assembly is connected in series between a negative pole of the power supply and the load. The second switching assembly includes multiple second switching units in series. The second controller is electrically connected to a second pre-set reference potential of the second switching assembly. The second controller is electromagnetically coupled with each second switching unit through a second transformer unit.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: March 9, 2021
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Teng Liu, Lifeng Qiao, Dehui Zhang, JianPing Ying
  • Patent number: 10924030
    Abstract: A modular power supply system, includes: a main controller, configured to output a main control signal; N local controllers, wherein each of the local controllers is configured to receive the main control signal to output at least one local control signal; and N power units, in one-to-one correspondence with the N local controllers, wherein each of the power units includes a first end and a second end, the second end of each of the power units is connected to the first end of an adjacent one of the power units, each of the power units includes M power converters, and each of the power converters is configured to operate according to the local control signal output by a corresponding local controller, wherein each of the power units further includes: M sampling circuits, configured to sample positive DC bus voltages and negative DC bus voltages of the M power converters respectively.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: February 16, 2021
    Assignee: Delta Electronics (Shanghai) CO., LTD
    Inventors: Jianping Ying, Ming Wang, Xiaobo Huang, Jun Liu, Zhiming Hu
  • Publication number: 20210036695
    Abstract: The present disclosure mainly provides a clamping circuit, coupled to a first end and a second end of a switching transistor through a first node and a second node, comprising: an RCD circuit, comprising a first resistor and a first capacitor connected in parallel between the second node and a third node, and a diode having a negative electrode coupled to the third node; and a first stabilivolt diode, having a negative electrode coupled to the first node and a positive electrode coupled to a positive electrode of the diode at a fourth node.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 4, 2021
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Lifeng QIAO, Wuying LI, Dehui ZHANG, Teng LIU, Jianping YING
  • Publication number: 20210035725
    Abstract: The invention relates to a transformer and a method for manufacturing the same. The transformer includes a magnetic core having a body part and a hollow part passing through the body part; a first winding wound around the body part of the magnetic core through the hollow part and including two first leads; a first infiltration material member enclosing the body part and the first winding through the hollow part, with the two first leads being exposed; a second winding wound around the first infiltration material member through the hollow part, isolated from the first winding, and including two second leads; a shell including an accommodating space, in which the magnetic core, the first winding, the first infiltration material, and the second winding are accommodated; and a pouring sealant poured into the accommodating space and maintaining the first leads and the second leads to be exposed outside the shell.
    Type: Application
    Filed: June 10, 2020
    Publication date: February 4, 2021
    Inventors: Jianping YING, Liang WANG, Qiang WANG, Teng LIU, Yong ZENG, Jianxing DONG
  • Patent number: 10886912
    Abstract: The present disclosure provides a gate circuit and a gate drive circuit for a power semiconductor switch, including: a zener diode and a charge dissipation circuit. A first end of the zener diode is connected to a first end of the charge dissipation circuit and a gate of the power semiconductor switch, a second end of the zener diode is connected to a second end of the charge dissipation circuit and a second end of the power semiconductor switch. A first parasitic capacitor is formed between a first end and the gate of the power semiconductor switch, and a second parasitic capacitor is formed between the gate and the second end of the power semiconductor switch.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: January 5, 2021
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Jianping Ying, Ming Wang, Xiaobo Huang, Jun Liu
  • Patent number: 10873253
    Abstract: The present disclosure discloses a method of discharging a bus capacitor in a power converter, the method comprising: outputting a plurality of pulse control signals to the corresponding plurality of power semiconductor switch groups when the working state of the power converter is in a discharge state and the state of the main circuit breaker is open to control the ON and OFF of the plurality of power semiconductor switch groups, respectively, so as to form a discharge loop between the positive terminal and the negative terminal of the bus capacitor within at least a preset time, thereby causing the bus capacitor to discharge. Since a discharge loop is formed by the bus capacitor and the bridge arms and the energy of the bus capacitor is consumed by a power device, thereby the peak value and discharge rate of discharge current can be effectively controlled without adding additional discharge elements.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: December 22, 2020
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Jianping Ying, Hailong Wang, Peng Xiao, Lifeng Qiao, Hongwei Xiao, Boyu Pu
  • Publication number: 20200313554
    Abstract: The present disclosure provides a conversion system with a high voltage side and a low voltage side, including: a plurality of power units, each power unit including: a plurality of DC/DC converters, when in normal operation, one part of DC/DC converters being in a working state and other DC/DC converters being in a cold backup state; a plurality of bypass circuits connected in parallel to the corresponding DC/DC converters; a detection unit connected to each DC/DC converter, and detects the DC/DC converter; and a control unit coupled to the detection unit and each of the plurality of DC/DC converters; and a main control unit coupled with each control unit and configured to receive the preset signal of respective control unit and outputs a bypass signal and a release signal to the corresponding control unit according to the preset signal.
    Type: Application
    Filed: March 26, 2020
    Publication date: October 1, 2020
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Teng LIU, Jianping YING, Yi ZHANG, Guangcheng HU, Xin WANG, Dehai LOU, Yun CAO
  • Publication number: 20200313544
    Abstract: A power unit includes: a DC/DC conversion circuit; a bypass circuit, including a mechanical switch, an impedance network, and a semiconductor switch, wherein the semiconductor switch and the impedance network are connected in series to form a series branch, the series branch, the mechanic switch and the DC/DC conversion circuit are connected in parallel between a positive end and a negative end at one side of the power unit; a detecting unit, configured to detect a working signal of the DC/DC conversion circuit and generate a detection signal according to the working signal; and a controller, configured to, when the fault occurs in the DC/DC conversion circuit, output a first control signal to a control end of the mechanical switch and output a second control signal to a control end of the semiconductor switch.
    Type: Application
    Filed: March 26, 2020
    Publication date: October 1, 2020
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Jianping YING, Teng LIU, Dehai LOU, Xin WANG, Yun CAO
  • Publication number: 20200280266
    Abstract: A control method of a multilevel converter includes: classifying power modules that start working, need to update an output state or stop working to form m power module groups; and controlling power modules in a same one of the power module groups to start working, update the output state or stop working at the same time, and sequentially controlling the m power module groups to start working, or update the output state or stop working, according to a preset time interval. The number of power modules in each power module group is less than or equal to a preset value, causing a change value of an output level of the each power module group to be less than or equal to a preset voltage value.
    Type: Application
    Filed: February 27, 2020
    Publication date: September 3, 2020
    Applicant: Delta Electronics (Shanghai) CO., LTD
    Inventors: Jianping YING, Wei XIE, Lan WEI, Jianfei ZHENG, Bingjie LIU, Dingkun SHEN, Zhiming HU, Wei XU, Yang LIU
  • Publication number: 20200244065
    Abstract: Disclosed is a surge control circuit, including: an absorption circuit including an absorption element and a bypass switch which are connected in series, a switch group connected in parallel to both ends of the absorption circuit and a first control circuit electrically connected to the switch group and bypass switch respectively. Normally, the first control circuit controls the switch group and the bypass switch to turn on simultaneously, makes the current flow through the switch group; when detecting the current is greater than or equal to the first preset current value, or the current increase rate is greater than or equal to the preset current rate of change, the first control circuit controls the switch group to turn off, makes the current flow through the absorption circuit; when detecting the current is less than the second preset current value, the first control circuit controls the bypass switch to turn off.
    Type: Application
    Filed: October 1, 2019
    Publication date: July 30, 2020
    Inventors: JianPing YING, Wuying LI, Lifeng QIAO, Teng LIU
  • Patent number: 10727664
    Abstract: The present disclosure provides a temperature protection circuit for a power converter, including a plurality of temperature protection branches, each of the temperature protection branches comprises a resistor, a voltage source, a temperature switch, and an isolation transformer, and each of the temperature protection branches corresponds to one of the power semiconductor switch blocks, and a first end of the resistor of each of the temperature protection branches is coupled to an output electrode of the power semiconductor switch block, and a second end of the resistor is coupled to a first end of the voltage source and coupled to a first end of the contact of the temperature switch via a primary winding of the isolation transformer, a second end of the voltage source and a second end of the contact of the temperature switch are respectively coupled to the potential midpoint of the power converter.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: July 28, 2020
    Assignee: Delta Electronics, Inc.
    Inventors: Teng Liu, Yong Zeng, Jianping Ying, Ming Wang, Xiaobo Huang, Jun Liu
  • Publication number: 20200219692
    Abstract: Disclosed is a circuit breaker apparatus, including a first switching assembly, a first controller, a second switching assembly and a second controller. The first switching assembly is connected in series between a positive pole of a power supply and a load. The first switching assembly includes multiple first switching units in series. The first controller is electrically connected to a first pre-set reference potential of the first switching assembly. The first controller is electromagnetically coupled with each first switching unit through a first transformer unit. The second switching assembly is connected in series between a negative pole of the power supply and the load. The second switching assembly includes multiple second switching units in series. The second controller is electrically connected to a second pre-set reference potential of the second switching assembly. The second controller is electromagnetically coupled with each second switching unit through a second transformer unit.
    Type: Application
    Filed: April 9, 2019
    Publication date: July 9, 2020
    Inventors: Teng LIU, Lifeng QIAO, Dehui ZHANG, JianPing YING