公开(公告)号：US20160274167A1

公开(公告)日：2016-09-22

申请号：US15029545

申请日：2014-04-14

Applicant: China University of Mining and Technology

Inventor： Hao Chen ,  Xing Wang ,  Shengquan Wang

IPC: G01R31/02 ,  H02P25/092 ,  H02P29/024 ,  G01R31/42

CPC classification number: G01R31/025 ,  G01R31/343 ,  G01R31/42 ,  H02P25/092 ,  H02P29/024 ,  H02P29/0241

Abstract: A bus current-based short circuit fault diagnosing method for the power converter of a switched reluctance motor, which, by detecting the transient value of bus current in the power converter of a switched reluctance motor, calculates the mean value Δ of maximum wavelet transform coefficient corresponding to bus current under different scale parameters and takes the mean value as a fault characteristic quantity, and utilizes a curve of mean value Δ of maximum wavelet transform coefficient corresponding to bus current in the power converter of the switched reluctance motor under different scale parameters in the entire range of rotation speed to diagnose whether there is a short circuit fault in the position main switches of the power converter of the switched reluctance motor. The method is applicable to the diagnosis of short circuit faults in position main switches of the power converter of a switched reluctance motor in any topological structure with any number of phases, can diagnose short circuit faults accurately, and has a great value in engineering application.

Abstract translation: 一种开关磁阻电机功率转换器的总线电流短路故障诊断方法，通过检测开关磁阻电机功率转换器中总线电流的瞬态值，计算最大小波变换系数的平均值Δ 对应于不同规模参数下的总线电流，将平均值作为故障特征量，并利用不同规模参数下开关磁阻电机功率转换器中总线电流的最大小波变换系数的平均值Δ曲线 整个旋转速度范围，用于诊断开关磁阻电机功率转换器的位置主开关是否存在短路故障。 该方法适用于开关磁阻电机功率转换器位置主开关的任意多相拓扑结构中的短路故障诊断，可准确诊断短路故障，在工程应用中具有重要价值。

公开(公告)号：US10680662B2

公开(公告)日：2020-06-09

申请号：US16076686

申请日：2017-12-27

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY ,  XUZHOU ZHIRUN MINING EQUIPMENT SCIENCE AND TECHNOLOGY CO., LTD

Inventor： Gongbo Zhou ,  Zhencai Zhu ,  Hao Chen ,  Houlian Wang ,  Chaoquan Tang ,  Wei Li ,  Guohua Cao ,  Yuxing Peng ,  Gang Shen

IPC: H04W84/18 ,  H04B1/03

Abstract: The present invention discloses a wireless sensor node with a hierarchical protection structure, including a node hardware circuit and a node hierarchical protection structure. The node hardware circuit includes a sensor module, a data processor module and a wireless communication module, and the node hierarchical protection structure includes a primary sealed protection structure and a secondary strengthened protection structure; the primary sealed protection structure includes an ABS spherical inner shell; the data processor module and the wireless communication module are disposed in the ABS spherical inner shell; gaps in the ABS spherical inner shell are filled with EPE cushioning foam; a flame-retardant and thermal-insulating layer made of a nanometer aerogel insulation blanket is covered on the outside of the ABS spherical inner shell; the secondary strengthened protection structure includes a spherical nylon outer shell with vent holes; the spherical nylon outer shell and the ABS spherical inner shell are connected with each other through support of rubber dampers; and the sensor module is disposed in the spherical nylon outer shell. The node according to the present invention can be deployed by ejection, is highly adaptive to catastrophes, can acquire environmental information effectively, and has relatively low costs.

公开(公告)号：US10224855B2

公开(公告)日：2019-03-05

申请号：US15128947

申请日：2015-07-31

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Hao Chen ,  Jiaotong Shi

IPC: H02P25/098 ,  H02P6/10

Abstract: A three-phase switched reluctance motor torque ripple three-level suppression method. A first set of torque thresholds (th1low, th1zero, th1up) is set in rotor position interval [0°, θr/3]. A second set of torque thresholds (th2low, th2zero, th2up) is set in rotor position interval [θr/3, θr/2]. Power is supplied to adjacent phase A and phase B for excitation. The power supplied for excitation to phase A leads the power supplied for excitation to phase B by θr/3. At this moment, phase A is turned off, phase B is turned on and three-level suppression of torque ripple of three-phase switched reluctance motor is realized by dividing the commutation process from phase A to phase B into two sections.

公开(公告)号：US20160091556A1

公开(公告)日：2016-03-31

申请号：US14351528

申请日：2013-04-19

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Hao Chen ,  Xing Wang

IPC: G01R31/26 ,  G01R31/34 ,  G01R31/40

CPC classification number: G01R31/2632 ,  G01R31/024 ,  G01R31/34 ,  G01R31/40 ,  G01R31/42 ,  G01R31/44

Abstract: A fault diagnosis method for freewheeling diodes of power converter of switched reluctance motor with two main switches per phase, in which two current sensors are arranged on a power converter with two main switches per phase, wherein, one current sensor LEM1 detects the total current of the main switches connected to the DC bus, and the other current sensor LEM2 detects the total feedback current of the freewheeling diodes connected to the DC bus. By controlling ON/OFF of the upper and lower main switch tubes, short circuit fault of the upper freewheeling diode, short circuit fault of the lower freewheeling diode, short circuit fault of both the upper freewheeling diode and the lower freewheeling diode, open circuit fault of the upper freewheeling diode, open circuit fault of the lower freewheeling diode, or open circuit fault of both the upper freewheeling diode and the lower freewheeling diode can be determined.

Abstract translation: 一种具有每相两个主开关的开关磁阻电动机功率转换器续流二极管的故障诊断方法，其中两个电流传感器布置在每相具有两个主开关的功率转换器上，其中一个电流传感器LEM1检测总电流 主开关连接到直流总线，另一个电流传感器LEM2检测连接到直流总线的续流二极管的总反馈电流。 通过控制上，下主开关管的ON / OFF，上续流二极管的短路故障，下续流二极管的短路故障，上续流二极管和下续流二极管的短路故障，开路故障 的上续流二极管，下续流二极管的开路故障或上续流二极管和下续流二极管的开路故障。

公开(公告)号：US20150331050A1

公开(公告)日：2015-11-19

申请号：US14430381

申请日：2013-04-19

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Hao Chen ,  Xing Wang

IPC: G01R31/34

CPC classification number: G01R31/34 ,  G01R31/42

Abstract: A node energy diagnosis method for a fault of a switched reluctance motor double-switch power converter. By detecting a transient value of a phase current of a switched reluctance motor double-switch power converter, a node energy standard deviation σ is calculated to be used as a fault characteristic quantity, and a main switch lower-tube short-circuit fault of the switched reluctance motor double-switch power converter is diagnosed by adopting a node energy standard deviation σ curve of the phase current of the switched reluctance motor double-switch power converter in the whole rotation speed range. It also can be applied in fault diagnosis when a main switch lower-tube short-circuit fault occurs in two phases or more than two phases of a switched reluctance motor double-switch power converter. It is applicable to switched reluctance motor power converters with various phase numbers and a double-switch structure, is durable, reliable in fault diagnosis and good in effect, and has good practicability, and wide application prospect.

Abstract translation: 用于开关磁阻电动机双开关电源转换器故障的节点能量诊断方法。 通过检测开关磁阻电动机双开关功率转换器的相电流的瞬态值，节点能量标准偏差＆sgr; 被计算为故障特征量，开关磁阻电机双开关电源转换器的主开关下管短路故障采用节点能量标准偏差法进行诊断。 开关磁阻电机双开关电源转换器在整个转速范围内的相电流曲线。 当主开关下管短路故障发生在开关磁阻电机双开关电源转换器的两相或两相以上时，也可应用于故障诊断。 适用于具有各种相位数和双开关结构的开关磁阻电机功率转换器，耐用，故障诊断可靠，效果好，实用性好，应用前景广阔。

公开(公告)号：US20150220484A1

公开(公告)日：2015-08-06

申请号：US14378629

申请日：2013-01-24

Applicant: China University of Mining and Technology

Inventor： Hao Chen ,  Yan Liang ,  Dongsheng Yu

IPC: G06F17/11

CPC classification number: G06F17/11 ,  H02P23/14 ,  H02P25/08

Abstract: A memristor linear modeling method for a switched reluctance motor. A non-inverting operational amplifier circuit and an inverting operational amplifier circuit are employed to construct a switched reluctance motor linear phase inductance characteristic element.

Abstract translation: 用于开关磁阻电机的回忆线性建模方法。 采用非反相运算放大器电路和反相运算放大器电路构成开关磁阻电机线性相电感特征元件。