公开(公告)号：US20240235181A1

公开(公告)日：2024-07-11

申请号：US18543735

申请日：2023-12-18

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Mingzhe Rong ,  Fei Yang ,  Yifei Wu ,  Jinru Sun ,  Yi Wu ,  Chunping Niu

IPC: H02H7/06 ,  H02H1/00

CPC classification number: H02H7/06 ,  H02H1/0007

Abstract: A generator circuit breaker includes a main current branch, a current-limiting transfer branch, a freewheeling branch and a fast switch. The main current branch includes a high-speed mechanical switch S1 and a high-speed mechanical switch S2 in parallel, wherein two ends of each of breaks of the high-speed mechanical switch S1 and the high-speed mechanical switch S2 are directly connected with wire outlet ends of the circuit breaker respectively. One end of the current-limiting transfer branch is connected in parallel to one end of the main current branch and the other end of the current-limiting transfer branch is connected with the other end of the main current branch via a fast switch S3, wherein the current-limiting transfer branch includes a transfer capacitor C, an inductor L, thyristor components T1 and T2, and a current-limiting resistor R.

公开(公告)号：US20240235180A1

公开(公告)日：2024-07-11

申请号：US18543530

申请日：2023-12-18

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Fei Yang ,  Mingzhe Rong ,  Jinru Sun ,  Yifei Wu ,  Chunping Niu ,  Yi Wu ,  Jun Wang

IPC: H02H7/06 ,  H02H1/00

CPC classification number: H02H7/06 ,  H02H1/0007

Abstract: The disclosure discloses a generator circuit breaker control method based on short-circuit fault current symmetry. The method includes: collecting, by a control device, current on an outlet side of a generator in real time; calculating a transferring current feeding moment based on a current symmetry method when fault current rises to a peak value after a short-circuit fault occurs; correcting the transferring current feeding moment by a correction coefficient; and then calculating a breaker switching moment, thereby realizing precise control on a generator circuit breaker. The method mainly addresses the situation that the existing control method cannot effectively cope with the complexity of the short-circuit fault current on the outlet side of the generator, and fills the blank of the effective method for short-circuit control of the generator circuit breaker.

公开(公告)号：US11785849B2

公开(公告)日：2023-10-10

申请号：US17317852

申请日：2021-05-11

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Hailong He ,  Yi Wu ,  Chunping Niu ,  Mingzhe Rong ,  Zhenxuan Fang

IPC: H10N10/17 ,  H10N10/817

CPC classification number: H10N10/17 ,  H10N10/817

Abstract: In the thermoelectric power generator, a first heat insulation layer is paved on a partial lower surface of a first heat conduction and insulation end surface; a first electric conduction electrode is arranged on a lower surface of the first heat conduction layer and a lower surface of the first heat conduction and insulation end surface; a second electric conduction electrode is arranged opposite to the first electric conduction electrode and adaptive to the first electric conduction electrode; a thermoelectric component includes a plurality of P—N type thermoelectric arms connected in series; and a second heat conduction and insulation end surface is arranged opposite to the first heat conduction and insulation end surface, and an upper surface of the second heat conduction and insulation end surface is in partial contact with the second electric conduction electrode and in partial contact with the second heat insulation layer.

公开(公告)号：US11239655B2

公开(公告)日：2022-02-01

申请号：US16712714

申请日：2019-12-12

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Fei Yang ,  Mingzhe Rong ,  Yifei Wu ,  Yi Wu ,  Chunping Niu

IPC: H02H9/02 ,  H01C7/12 ,  H01H33/59 ,  H01H33/02 ,  H01H47/00 ,  H01H9/54 ,  H02H3/087

Abstract: The disclosure discloses a liquid arc voltage transfer based direct current breaker and a use method thereof. The direct current breaker includes a first connection terminal, a second connection terminal, a main current branch, a transfer branch and an energy dissipation branch. The main current branch is connected between the first connection terminal and the second connection terminal, and the main current branch includes a liquid break. The transfer branch is connected between the first connection terminal and the second connection terminal and is connected in parallel with the main current branch. The energy dissipation branch is connected between the first connection terminal and the second connection terminal and is connected in parallel with the main current branch and the transfer branch.

公开(公告)号：US20200343063A1

公开(公告)日：2020-10-29

申请号：US16712722

申请日：2019-12-12

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Mingzhe Rong ,  Yifei Wu ,  Fei Yang ,  Yi Wu ,  Chunping Niu

IPC: H01H33/68 ,  H02H9/04

Abstract: The present disclosure discloses a liquid arc extinguish chamber for direct current breaking. The liquid arc extinguish chamber for direct current breaking includes a cavity, a fixed contact and a moving contact. A liquid medium is sealed in the cavity. The fixed contact is hermetically fixed in the cavity. One end of the fixed contact is fixed in the cavity, and the other end of the fixed contact is connected with an outlet terminal A1. The moving contact is movably sealed in the cavity. One end of the moving contact may adjacently abut against or be in contact with the fixed contact, and the other end of the moving contact is connected with an outlet terminal A2.

公开(公告)号：US10297402B2

公开(公告)日：2019-05-21

申请号：US15493287

申请日：2017-04-21

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Mingzhe Rong ,  Yi Wu ,  Yifei Wu ,  Fei Yang ,  Chunping Niu

IPC: H01H9/54 ,  H01H33/59 ,  H02H3/087 ,  H02H3/05 ,  H02H3/02

Abstract: The present invention discloses a magnetic pulse inducted transfer-type DC circuit breaker. The DC circuit breaker comprises a main current circuit and a transfer current circuit, the main current circuit comprising a combination of a fast mechanical switch or a mechanical switch with a power electronic device; the transfer current circuit comprises an arrester and a mutual inductor. The voltage generated through a mutual inductor may directly transfer current to the arrestor, thereby eliminating a process of transfer of the current to the capacitor or a power electronic device; it has a high current limiting or breaking speed, with a stability far superior to traditional technologies. The isolation between the capacitance charging unit and the DC system significantly reduces the voltage level and size of the charging unit, and enhances action reliability. The power semiconductor devices or trigger gaps are used at the primary side of the mutual inductor of the transfer current circuit form a bridge circuit, thereby realizing bidirectional current transfer; the bridge circuit is voltage-withstanding and low-cost.

公开(公告)号：US09640983B2

公开(公告)日：2017-05-02

申请号：US14157761

申请日：2014-01-17

Applicant: Xi'an Jiaotong University

Inventor： Fei Yang ,  Mingzhe Rong ,  Yi Wu ,  Yifei Wu ,  Hao Sun ,  Chunping Niu

IPC: H02H3/08 ,  H02H7/22

CPC classification number: H02H7/222

Abstract: A bidirectional hybrid breaker comprises a main current circuit, a transfer current circuit, an over-voltage limiting circuit and a control system, wherein the main current circuit, the transfer current circuit and the over-voltage limiting circuit are connected in parallel. The transfer current circuit consists of circuits 1-4, wherein the circuit 1 and the circuit 4 are connected in series at first and then connected with the main current circuit in parallel; a pre-charged capacitor is connected with the circuit 4 in parallel after being connected with the circuit 3 in series; and, one end of the circuit 2 is connected with the left end of the main current circuit while the other end thereof is connected with a connection point of the pre-charged capacitor and the circuit 3.

公开(公告)号：US11289280B2

公开(公告)日：2022-03-29

申请号：US16858314

申请日：2020-04-24

Applicant: Xi'an Jiaotong University ,  Huawei Technologies Co., Ltd.

Inventor： Chunping Niu ,  Yi Wu ,  Xufeng Kang ,  Fei Yang ,  Mingzhe Rong ,  Guangchao Yan ,  Qingyin Fang

IPC: H01H1/54 ,  H01H50/18 ,  H01H50/36 ,  H01H50/44 ,  H01H50/58

Abstract: A high voltage relay resistant to instantaneous high-current impact is disclosed. The high voltage relay includes an electromagnet system, a control system, a contact system, and a base support. In various embodiments, an electromagnetic force generated by the contact system is used to resolve a problem of contact separation caused by an electric repulsion force generated by an instantaneous high-current.

公开(公告)号：US20200343062A1

公开(公告)日：2020-10-29

申请号：US16712720

申请日：2019-12-12

Applicant: XI'AN JIAOTONG UNIVERSITY

Inventor： Yi Wu ,  Yifei Wu ,  Fei Yang ,  Mingzhe Rong ,  Chunping Niu

IPC: H01H33/18 ,  H02H9/02

Abstract: The present disclosure discloses a direct current breaker based on vacuum magnetic blowout transfer and a breaking method thereof. The direct current breaker includes a first connection terminal, a second connection terminal, a main current branch, a transfer branch, an energy dissipation branch and a blowout unit. The main current branch is connected between the first connection terminal and the second connection terminal. During current conduction of the direct current breaker, current flows through the main current branch. The transfer branch is connected between the first connection terminal and the second connection terminal and connected in parallel with the main current branch. The energy dissipation branch is connected between the first connection terminal and the second connection terminal and connected in parallel with the main current branch and the transfer branch. The blowout unit is arranged between the main current branch and the transfer branch.

公开(公告)号：US09692225B2

公开(公告)日：2017-06-27

申请号：US14157777

申请日：2014-01-17

Applicant: Xi'an Jiaotong University

Inventor： Yi Wu ,  Mingzhe Rong ,  Fei Yang ,  Yifei Wu ,  Hao Sun ,  Chunping Niu

IPC: H02H9/00 ,  H02H3/087 ,  H01H9/54 ,  H01H33/59

CPC classification number: H02H3/087 ,  H01H9/548 ,  H01H33/596

Abstract: A hybrid DC breaker, comprises a main current circuit, a transfer current circuit, an over-voltage limiting circuit and a control system, wherein the main current circuit, the transfer current circuit and the over-voltage limiting circuit are connected in parallel. The transfer current circuit consists of circuits 1-4, wherein the circuit 1 and the circuit 4 are connected in series at first and then connected with the main current circuit in parallel; a pre-charged capacitor is connected with the circuit 4 in parallel after being connected with the circuit 3 in series; and, one end of the circuit 2 is connected with the left end of the main current circuit while the other end thereof is connected with a connection point of the pre-charged capacitor and the circuit 3.