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).
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Publication number: 20200219692Abstract: 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: ApplicationFiled: April 9, 2019Publication date: July 9, 2020Inventors: Teng LIU, Lifeng QIAO, Dehui ZHANG, JianPing YING
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Publication number: 20200143984Abstract: The present disclosure provides a magnetic element and a method for manufacturing same. The method includes: forming a first metal wiring layer on a surface of at least one segment of a magnetic core; forming a first metal protection layer on the first metal wiring layer; removing a portion of the first metal protection layer with a direct writing technique to expose a portion of the first metal wiring layer; and etching the exposed first metal wiring layer in such a manner that the first metal wiring layer forms at least one first pattern to function as a winding, where at least one turn of the first pattern surrounds the magnetic core. The magnetic element and the method for manufacturing the magnetic element provided in the present disclosure can improve space utilization of the magnetic element.Type: ApplicationFiled: October 15, 2019Publication date: May 7, 2020Inventors: Shouyu HONG, Jianping YING, Jianhong ZENG, Chaofeng CAI, Ganyu ZHOU, Pengkai JI
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Patent number: 10622986Abstract: 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: GrantFiled: May 28, 2019Date of Patent: April 14, 2020Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Jianping Ying, Ming Wang, Xiaobo Huang, Jun Liu, Lifeng Qiao, Xin Wang
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Patent number: 10587258Abstract: A drive circuit of a power semiconductor switch includes: a pulse modulation circuit having a first terminal configured to receive a fault signal, an isolation transformer, and a pulse demodulation circuit; when there is no fault signal being received, the pulse modulation circuit outputs a first turn on pulse signal and a first turn off pulse signal via the isolation transformer and the pulse demodulation circuit to charge/discharge a gate capacitor of the power semiconductor switch, so as to drive the power semiconductor switch to be turned on and turned off at a first speed; when the fault signal is received, the pulse modulation circuit outputs a second turn off pulse signal via the isolation transformer and the pulse demodulation circuit to discharge the gate capacitor of the power semiconductor switch, so as to drive the power semiconductor switch to be turned off at a second speed.Type: GrantFiled: June 19, 2019Date of Patent: March 10, 2020Assignee: Delta Electronics, Inc.Inventors: Jianping Ying, Ming Wang, Xiaobo Huang, Jun Liu, Zhiming Hu
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Publication number: 20200044555Abstract: A modular power supply system is configured to include: a main controller, configured to output a mam 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: ApplicationFiled: December 15, 2017Publication date: February 6, 2020Applicant: Delta Electronics (Shanghai) CO., LTDInventors: Jianping YING, Ming WANG, Xiaobo HUANG, Jun LIU, Zhiming HU
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Publication number: 20200036379Abstract: 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: ApplicationFiled: April 23, 2019Publication date: January 30, 2020Applicant: Delta Electronics,Inc.Inventors: Jianping YING, Ming WANG, Xiaobo HUANG, Jun LIU
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Publication number: 20190386560Abstract: 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: ApplicationFiled: December 15, 2017Publication date: December 19, 2019Applicant: Delta Electronics (Shanghai) CO., LTDInventors: Jianping YING, Ming WANG, Xiaobo HUANG, Jun LIU, Zhiming HU
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Publication number: 20190386651Abstract: A drive circuit of a power semiconductor switch includes: a pulse modulation circuit having a first terminal configured to receive a fault signal, an isolation transformer, and a pulse demodulation circuit; when there is no fault signal being received, the pulse modulation circuit outputs a first turn on pulse signal and a first turn off pulse signal via the isolation transformer and the pulse demodulation circuit to charge/discharge a gate capacitor of the power semiconductor switch, so as to drive the power semiconductor switch to be turned on and turned off at a first speed; when the fault signal is received, the pulse modulation circuit outputs a second turn off pulse signal via the isolation transformer and the pulse demodulation circuit to discharge the gate capacitor of the power semiconductor switch, so as to drive the power semiconductor switch to be turned off at a second speed.Type: ApplicationFiled: June 19, 2019Publication date: December 19, 2019Applicant: Delta Electronics,Inc.Inventors: Jianping YING, Ming WANG, Xiaobo HUANG, Jun LIU, Zhiming HU
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Publication number: 20190379201Abstract: 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: ApplicationFiled: May 13, 2019Publication date: December 12, 2019Applicant: Delta Electronics,Inc.Inventors: Teng LIU, Yong ZENG, Jianping YING, Ming WANG, Xiaobo HUANG, Jun LIU
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Publication number: 20190326831Abstract: 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: ApplicationFiled: December 15, 2017Publication date: October 24, 2019Applicant: Delta Electronics (Shanghai) CO., LTDInventors: Jianping YING, Ming WANG, Xiaobo HUANG, Jun LIU, Zhiming HU
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Publication number: 20190312425Abstract: A ground fault detection method for a power converter is provided, including: measuring, by a voltage sensor, a first voltage and a second voltage respectively, and converting the first voltage and the second voltage into a first digital voltage signal and a second digital voltage signal; receiving, by a controller, the first digital voltage signal and the second digital voltage signal, extracting a corresponding feature quantity of the first voltage and a corresponding feature quantity of the second voltage according to the first digital voltage signal and the second digital voltage signal; and further determining a type of the ground fault of the power converter and locating a ground fault; and when the power converter has a ground fault, shutting down the power converter.Type: ApplicationFiled: March 22, 2019Publication date: October 10, 2019Applicant: Delta Electronics,Inc.Inventors: Peng XIAO, Hongwei XIAO, Hongjian GAN, Jianping YING
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Publication number: 20190294187Abstract: 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, each of the power converters is configured to operate according to the local control signal, wherein the same local control signal controls the power semiconductor switches at an identical position in at least two of the M power converters to be simultaneously turned on and off.Type: ApplicationFiled: December 15, 2017Publication date: September 26, 2019Applicant: Delta Electronics (Shanghai) CO., LTDInventors: Jianping YING, Ming WANG, Xiaobo HUANG, Jun LIU, Zhiming HU
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Publication number: 20190280687Abstract: 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: ApplicationFiled: May 28, 2019Publication date: September 12, 2019Applicant: Delta Electronics (Shanghai) CO., LTDInventors: Jianping YING, Ming WANG, Xiaobo HUANG, Jun LIU, Lifeng QIAO, Xin WANG
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Patent number: 10374504Abstract: 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: GrantFiled: September 19, 2017Date of Patent: August 6, 2019Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Jianping Ying, Ming Wang, Xiaobo Huang, Jun Liu
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Patent number: 10367496Abstract: 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: GrantFiled: March 2, 2018Date of Patent: July 30, 2019Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Jianping Ying, Ming Wang, Xiaobo Huang, Jun Liu, Lifeng Qiao, Xin Wang
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Patent number: 10234880Abstract: The present disclosure discloses an active clamp circuit for a power semiconductor switch and a power converter using the same. The active clamp circuit includes: a discharging circuit, a first terminal of the discharging circuit being electrically connected to a collector of the power semiconductor switch; an unidirectional blocking circuit; a first voltage regulator diode connected in series with the unidirectional blocking circuit to form a series branch, a first terminal of the series branch being electrically connected to the collector of the power semiconductor switch; and a resistance-capacitance RC circuit, a first terminal of the RC circuit, a second terminal of the discharging circuit, and a second terminal of the serial circuit being electrically connected, a second terminal of the RC circuit being electrically coupled to a gate of the power semiconductor switch.Type: GrantFiled: July 18, 2018Date of Patent: March 19, 2019Assignee: Delta Electronics (Shanghai) CO., LTDInventors: Wuying Li, Xin Wang, Lifeng Qiao, Chenyu Lai, Jianping Ying
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Patent number: 10164515Abstract: A driving method for power semiconductor switches in an H-bridge circuit is provided. The method includes: calculating a start time and an end time of a zero level of an output voltage and determining a zero level section based on the start time and end time of the zero level; and driving an upper power semiconductor switch of a first bridge arm and an upper power semiconductor switch of a second bridge arm to be on simultaneously or driving a lower power semiconductor switch of the first bridge arm and a lower power semiconductor switch of the second bridge arm to be on simultaneously in the zero level section.Type: GrantFiled: February 7, 2018Date of Patent: December 25, 2018Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Wei Xu, Dingkun Shen, Jianfei Zheng, Jianping Ying, Zhiming Hu, Wei Tian, Wei Xie, Lan Wei
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Patent number: 10153706Abstract: The present disclosure provides a precharge device and a frequency converter. The precharge device is applied in a flying capacitor type multi-level converter circuit, and the multi-level converter circuit includes: a flying capacitor, a bus capacitor, a first and second semiconductor components, wherein the first semiconductor component is electrically connected between a first end of the flying capacitor and a first end of the bus capacitor, and the second semiconductor component is electrically connected between a second end of the flying capacitor and a second end of the bus capacitor; and the precharge device includes: an AC source; and an auxiliary circuit electrically connected with the AC source, wherein the auxiliary circuit reuses the first and second semiconductor components, and the AC source charges the flying capacitor and the bus capacitor through the auxiliary circuit.Type: GrantFiled: November 7, 2017Date of Patent: December 11, 2018Assignee: Delta Electronics, Inc.Inventors: Jianping Ying, Teng Liu, Yi Zhang, Yong Zeng
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Publication number: 20180350511Abstract: 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: ApplicationFiled: May 30, 2018Publication date: December 6, 2018Applicant: Delta Electronics,Inc.Inventors: Jianxing DONG, Yong ZENG, Teng LIU, Jianping YING
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Patent number: 10148164Abstract: A topology of composite cascaded high-voltage and low-voltage modules is provided. It includes at least one high-voltage module, at least one low-voltage module, at least one local control circuit and at least one DC-to-DC module. At least one high-voltage module is connected with at least one low-voltage module in cascade manner. At least one local control circuit outputs at least one signal to at least one high-voltage driving circuit and at least one low-voltage driving circuit. An input of at least one DC-to-DC module is connected with two ends of a low-voltage bus capacitor, for receiving a low-voltage DC bus voltage and converting the low-voltage DC bus voltage into a DC output voltage, so as to provide one or more of at least one high-voltage driving circuit, at least one low-voltage driving circuit and at least one local control circuit with a power supply.Type: GrantFiled: February 5, 2018Date of Patent: December 4, 2018Assignee: Delta Electronics (Shanghai) Co., Ltd.Inventors: Jianping Ying, Zhiming Hu, Wei Tian, Wei Xu, Jianfei Zheng