公开(公告)号：US20190195962A1

公开(公告)日：2019-06-27

申请号：US16230755

申请日：2018-12-21

申请人： KONE Corporation

发明人： Matti Mustonen

IPC分类号： G01R31/42 ,  H02P27/16 ,  H02M5/458

CPC分类号： G01R31/42 ,  G01R31/028 ,  H02M5/458 ,  H02P27/16

摘要： The invention relates to a method for maintenance of a frequency converter for driving an electric motor of a transportation device, said frequency converter being supplied with AC mains power via a contactor, and including a rectifier circuit for providing a DC supply voltage, a capacitive intermediate circuit for leveling DC supply voltage, and an inverter circuit for providing power to the electric motor. In the method, after the transportation device has been vacant for a predetermined time period, said contactor is opened to disable power flow from mains supply to the frequency converter, and a test load is connected to the intermediate circuit, parallel to a capacity of the intermediate circuit. The DC supply voltage Udc(t) is detected, and the detected DC supply voltage Udx(t) is utilized for establishing a maintenance information indicating that a maintenance should be done on the frequency converter. Another aspect of the invention is a software program realizing the method when executed on a computer.

公开(公告)号：US20180301899A1

公开(公告)日：2018-10-18

申请号：US15943894

申请日：2018-04-03

申请人： Panduit Corp.

发明人： Ronald A. Nordin ,  Masud Bolouri-Saransar ,  Edward Clarence Shultz ,  John Bohdan Melinyshyn

IPC分类号： H02J1/00 ,  H02J9/06 ,  H02J7/00 ,  G01R31/02 ,  G01R31/42 ,  H02J7/34

CPC分类号： H02J1/00 ,  G01R31/028 ,  G01R31/42 ,  H02J7/0014 ,  H02J7/0016 ,  H02J7/0021 ,  H02J7/345 ,  H02J9/061 ,  Y10T307/50

摘要： The present invention generally relates to the field of uninterruptable power supplies (UPSs) and more specifically, to UPSs using supercapacitors (also may be referred to as ultracapacitors) and/or other capacitor and/or battery elements. In an embodiment, a UPS of the present invention can individually regulate the charging of its capacitive elements to avoid overcharging and/or achieve a more efficient charge state.

公开(公告)号：US20180261412A1

公开(公告)日：2018-09-13

申请号：US15779484

申请日：2016-11-25

申请人： Phoenix Contact GmbH & Co. KG

发明人： Elmar SCHAPER ,  Bernd SCHULTZ ,  Lutz HEUER ,  Stephan HANSMEIER ,  Dirk PLEWKA ,  Alexander GUNTER

IPC分类号： H01H47/22 ,  H01H47/00 ,  H01H9/54 ,  H02J9/06 ,  G01R31/02

CPC分类号： H01H47/22 ,  G01R31/028 ,  H01H9/541 ,  H01H9/542 ,  H01H9/548 ,  H01H47/002 ,  H01H47/325 ,  H02J9/06 ,  H02P3/18 ,  H02P27/08 ,  H02P29/0241

摘要： A switching unit for controlling at least one switching element, includes a control unit adapted to control the at least one switching element; a connection for applying a supply voltage for power supply of the control unit; an energy storage connectable to the connection for applying a supply voltage and adapted, when the supply voltage drops or fails, to supply the control unit with power that is sufficient to control the at least one switching element such that the switching element executes a predetermined switching operation; wherein the switching unit includes means for monitoring the operability of the energy storage. Furthermore, a method for controlling at least one switching element using the switching unit.

公开(公告)号：US10056834B2

公开(公告)日：2018-08-21

申请号：US14856788

申请日：2015-09-17

申请人： Infineon Technologies Austria AG

发明人： Amir Babazadeh

IPC分类号： G05F1/00 ,  H02M3/158 ,  G01R31/02 ,  H02M3/157 ,  H02M1/00

CPC分类号： H02M3/158 ,  G01R31/028 ,  H02M3/157 ,  H02M3/1584 ,  H02M2001/0009 ,  H02M2001/0025 ,  H02M2003/1586

摘要： Controller circuitry controls power supply circuitry to produce an output voltage. During operation of the power supply circuitry to produce the output voltage, the controller circuitry calculates a magnitude of capacitance of output capacitor circuitry in the power supply. According to one configuration, the controller circuitry utilizes a calculated magnitude of capacitance as a basis to adjust settings of the power supply circuitry.

公开(公告)号：US20180003761A1

公开(公告)日：2018-01-04

申请号：US15387370

申请日：2016-12-21

申请人： STMicroelectronics S.r.l. ,  STMicroelectronics (Crolles 2) SAS ,  STMicroelectronics (Rousset) SAS

发明人： Antonino Conte ,  Enrico Castaldo ,  Raul Andres Bianchi ,  Francesco La Rosa

IPC分类号： G01R31/02 ,  G01R31/28

CPC分类号： G01R31/028 ,  G01R31/2882 ,  G04F10/10

摘要： A method can be used for testing a charge-retention circuit for measurement of a time interval having a storage capacitor coupled between a first biasing terminal and a floating node, and a discharge element coupled between the floating node and a reference terminal. The discharge element is configured to implement discharge of a charge stored in the storage capacitor by leakage through a corresponding dielectric. The method includes biasing the floating node at a reading voltage, detecting a biasing value of the reading voltage, implementing an operation of integration of the discharge current in the discharge element with the reading voltage kept constant at the biasing value, and determining an effective resistance value of the discharge element as a function of the operation of integration.

公开(公告)号：US09772366B2

公开(公告)日：2017-09-26

申请号：US14632001

申请日：2015-02-26

申请人： Taiwan Semiconductor Manufacturing Company Limited

发明人： Shuo-Chun Chou ,  Chi-Feng Huang ,  Chia-Chung Chen ,  Victor Chiang Liang

IPC分类号： G01R31/26 ,  G01R31/02 ,  G01R31/28 ,  H01L21/66

CPC分类号： G01R31/028 ,  G01R31/2856 ,  H01L22/00

摘要： A method of testing a device under test (DUT) connected between first and second DUT nodes includes generating a set of control signals, and in response to the set of control signals, disconnecting a first voltage node from a first DUT node, connecting a second voltage node to the first DUT node, periodically connecting and disconnecting a third voltage node to and from the second DUT node at a predetermined frequency, disconnecting a fourth voltage node from the second DUT node when the third voltage node is connected to the second DUT node, and connecting the fourth voltage node to the second DUT node when the third voltage node is disconnected from the second DUT node. A circuit that performs the method is also disclosed.

公开(公告)号：US09735696B2

公开(公告)日：2017-08-15

申请号：US14951531

申请日：2015-11-25

申请人： Rockwell Automation Technologies, Inc.

发明人： Santosh M. Bhandarkar ,  Sinuhe Imuris Benitez Escobar ,  Nikhil Prasad

IPC分类号： H02M1/32 ,  H02M1/14 ,  H02M1/12 ,  H02M5/456 ,  H02M5/458 ,  G01R31/02 ,  H02M1/08 ,  H02M1/00

CPC分类号： H02M5/458 ,  G01R31/028 ,  H02M1/08 ,  H02M1/126 ,  H02M1/32 ,  H02M5/4585 ,  H02M2001/0009

摘要： Methods and power conversion systems in which a capacitor degradation detection system includes an adjustable gain amplifier circuit is calibrated by automatic adjustment of at least one amplifier gain to accommodate current and voltage levels of a particular filter circuit in a first mode. Capacitance values of filter capacitors are calculated according to amplified current signals and compared with an acceptable tolerance range to selectively identify a filter capacitor fault or to store calculated capacitance values as base values in an electronic memory in the first mode. During operation in a second mode with the rectifier and inverter on, the adjusted amplifier gain is used to amplify current sensor signals and/or voltage signals, and capacitance values of the filter capacitors are used to selectively identify capacitor degradation.

公开(公告)号：US09685276B2

公开(公告)日：2017-06-20

申请号：US14146967

申请日：2014-01-03

申请人： Visedo Oy

发明人： Tero Jarvelainen

IPC分类号： H05K7/20 ,  H01G11/10 ,  H01G11/18 ,  H01G11/08 ,  H01G11/16 ,  H02H7/16 ,  G01R31/02 ,  H01L23/00

CPC分类号： H01G11/10 ,  G01R31/028 ,  H01G11/08 ,  H01G11/16 ,  H01G11/18 ,  H01L24/29 ,  H02H7/16 ,  H05K7/20409 ,  Y02E60/13

摘要： A capacitor module includes a capacitor element, a first voltage terminal connected to a first pole of the capacitor element, and a second voltage terminal connected to a second pole of the capacitor element. The capacitor module further includes a cooling duct system for cooling the capacitor element, and a housing encapsulating the capacitor element and the cooling duct system. The housing comprises wiring lead-throughs for the first and second voltage terminals and piping lead-throughs for the cooling duct system. As the capacitive module is encapsulated and includes the cooling ducts and the wiring and piping lead-throughs, modular capacitive energy-storages of different sizes can be built by interconnecting capacitor modules of the kind described above, and there is no need to build separately an encapsulation provided with cooling ducts.

公开(公告)号：US09658292B2

公开(公告)日：2017-05-23

申请号：US14211381

申请日：2014-03-14

申请人： California Institute of Technology

发明人： Farshid Roumi ,  Jamshid Roumi

IPC分类号： H01M10/48 ,  G01R31/36 ,  H01M10/42 ,  G01R29/08 ,  G01R31/02 ,  H01G11/14 ,  G01R19/165

CPC分类号： G01R31/3627 ,  G01R19/16542 ,  G01R29/0814 ,  G01R31/025 ,  G01R31/028 ,  G01R31/3606 ,  G01R31/3679 ,  H01G11/14 ,  H01M10/4257 ,  H01M10/48 ,  H01M2010/4271

摘要： A method for abnormality detection in an energy unit includes passively detecting an abnormality in an energy unit by detecting electromagnetic radiation generated by the abnormality, the energy unit comprising at least one of an electrical energy unit and an electrochemical energy unit. A method for detecting an abnormality in an energy unit includes (a) applying a signal to the energy unit, (b) performing a plurality of measurements, at a respective plurality of different locations within the energy unit, of a response of the energy unit to the signal, and (c) processing the plurality of measurements to identify the abnormality.

公开(公告)号：US09588182B2

公开(公告)日：2017-03-07

申请号：US13738688

申请日：2013-01-10

申请人： General Electric Company

发明人： Silvio Colombi ,  Marco Crespan

IPC分类号： G01F22/02 ,  G01R31/36 ,  G01R31/02 ,  G06F17/10 ,  G01R31/42

CPC分类号： G01R31/3624 ,  G01R31/028 ,  G01R31/42 ,  G06F17/10

摘要： Systems, methods, and devices are provided for estimating when preventive maintenance of power capacitors is called for. Such a system may include, for example, a voltage sensor, a current sensor, and data processing circuitry. The voltage sensor may measure a voltage difference across a phase of a power capacitor. The current sensor may measure a current across the phase of the power capacitor. The data processing circuitry to determine a first instantaneous indication of a difference between a nominal capacitance of the power capacitor and an actual value of the power capacitor based at least in part on the measured first voltage difference and first current.

摘要翻译： 提供系统，方法和设备，用于估计何时需要维护电力电容器。 这样的系统可以包括例如电压传感器，电流传感器和数据处理电路。 电压传感器可以测量功率电容器两相的电压差。 电流传感器可以测量跨过功率电容器的相位的电流。 数据处理电路，用于至少部分地基于所测量的第一电压差和第一电流来确定功率电容器的标称电容和功率电容器的实际值之间的差的第一瞬时指示。