-
公开(公告)号：US20210167708A1
公开(公告)日：2021-06-03
申请号：US17107246
申请日：2020-11-30
申请人： ABB Schweiz AG
摘要： A method of controlling a 3n-phase electrical machine (7) by means of n power converters (3a, 3b) each being controlled by a respective controller, and each power converter (3a, 3b) being configured to power a respective set of three phases of the electrical machine (7), wherein the method for each controller comprises: a) obtaining measured currents (ia,1, ib,1, ic,1, ia,2, ib,2, ic,2) of the set of three phases of the electrical machine (7) controlled by the controller, b) estimating all currents ({circumflex over (ι)}dq, 2, {circumflex over (ι)}dq, 1) of all the other sets of three phases of the electrical machine (7), which are controlled by the other controllers, c) transforming the measured currents (ia,1, ib,1, ic,1, ia,2, ib,2, ic,2) and all the estimated currents ({circumflex over (ι)}dq,2, {circumflex over (ι)}dq,1) using vector space decomposition, VSD, to obtain a set of VSD currents, and d) controlling the corresponding power converter based on the VSD currents.
-
公开(公告)号：US20240088782A1
公开(公告)日：2024-03-14
申请号：US18464372
申请日：2023-09-11
申请人： ABB Schweiz AG
CPC分类号： H02M1/327 , G01R31/2642 , H05K7/2089
摘要： A field of electric drive devices and arrangements including a plurality of power semiconductor components formed in or on a common substrate, and more particularly to a method and an apparatus for monitoring the condition of a power semiconductor module. The method for monitoring the condition of a power semiconductor module of an electric drive device connected to an electric machine includes the steps of engaging a locking of the rotor of the electric machine at zero speed or at near zero speed by injecting DC currents by the electric drive device, initiating test temperature recording in the power semiconductor module, disengaging the locking the rotor of the electric machine by the electric drive device, terminating the test temperature recording and storing the recorded data of the test temperature as test temperature data, and determining the condition of the power semiconductor module utilising the test temperature data.
-
公开(公告)号：US20230393023A1
公开(公告)日：2023-12-07
申请号：US18248966
申请日：2021-10-20
申请人： ABB Schweiz AG
IPC分类号： G01M13/045
CPC分类号： G01M13/045
摘要： A method of extending the lifetime of a rolling-element bearing of an electrical machine, the method including: a) defining a first set of control parameter values, b) estimating a first remaining useful life, RUL, of the rolling-element bearing, based on a signal that provides a measure of vibrations of the rolling-element bearing obtained when the electrical machine is controlled by the first set of control parameter values, c) changing at least one control parameter value in the first set of control parameter values to thereby obtain a second set of control parameter values, d) estimating a second RUL of the rolling-element bearing based on the signal, obtained when the electrical machine is controlled by the second set of control parameter values, e) comparing the first RUL with the second RUL, f) in case the second RUL is longer than the first RUL, replacing the control parameter values in the first set of control parameter values with those of the second set of control parameter values, and replacing the value of the first RUL with that of the second RUL, and g) repeating steps c)-f) over and over during operation of the electrical machine.
-
公开(公告)号：US20230236249A1
公开(公告)日：2023-07-27
申请号：US18157806
申请日：2023-01-20
申请人： ABB Schweiz AG
CPC分类号： G01R31/346 , G01R31/52
摘要： A method for estimating at least one leakage inductance of a 3n-phase electrical machine includes performing a first machine investigation scheme and a second machine investigation scheme, the first scheme including ordering a machine drive stage to control one of the 3-phase windings, obtaining a first set of measured currents from the 3-phase winding and processing the first set of measured currents to obtain primary characteristics of an electrical quantity of the electrical machine, the second scheme including ordering the machine drive stage to control all the 3-phase windings using a VSD control model, the controlling involving only controlling a first fundamental subspace of the VSD control model, obtaining a second set of measured currents from all 3-phase windings and processing the second set of measured currents to obtain a leakage inductance estimate and secondary characteristics of the electrical quantity, for which leakage inductance estimate the primary and secondary characteristics match.
-
公开(公告)号：US20240044449A1
公开(公告)日：2024-02-08
申请号：US18257634
申请日：2020-12-22
申请人： ABB Schweiz AG
CPC分类号： F16N29/00 , G01N33/2888 , F16N2250/08 , F16N2210/14 , F16N2210/18
摘要： A method of detecting degradation of a lubricant in a bearing of an electrical machine, including: a) obtaining a first outer bearing ring temperature, b) changing the speed of the electrical machine, c) obtaining a second outer bearing ring temperature when the speed has changed, d) determining a thermal response value of the outer bearing ring based on the first outer bearing ring temperature and the second outer bearing ring temperature, e) comparing the thermal response value with a reference thermal response value for the same speed change as in step b), and f) in case the thermal response value differs from the reference thermal response value, concluding that the performance of the lubricant has degraded.
-
公开(公告)号：US20230349848A1
公开(公告)日：2023-11-02
申请号：US18306725
申请日：2023-04-25
申请人： ABB Schweiz AG
摘要： A method and apparatus for monitoring a thermal load in an enclosure including at least one electric device, the apparatus being configured to receive temperature data on a temperature outside the enclosure, temperature data on a temperature inside the enclosure and data indicative of heat generated by the at least one electric device into the enclosure, to determine a thermal resistance of the enclosure and/or a thermal capacitance of the enclosure on the basis of the received data, and to determine a cooling status of the enclosure on the basis of the determined thermal resistance of the enclosure and thermal resistance reference data and/or on the basis of the determined thermal capacitance of the enclosure and thermal capacitance reference data.
-
公开(公告)号：US20230349772A1
公开(公告)日：2023-11-02
申请号：US18306691
申请日：2023-04-25
申请人： ABB Schweiz AG
IPC分类号： G01K3/10
CPC分类号： G01K3/10
摘要： A method and apparatus for monitoring a thermal load in an enclosure comprising at least one electric device, the apparatus being configured to receive temperature data on a temperature inside the enclosure, to receive data indicative of heat generated by the at least one electric device into the enclosure, to associate and record the data indicative of the heat generated by the at least one electric device into the enclosure with the temperature data over at least one period of time, and to determine a thermal load caused by the at least one electric device in the enclosure on the basis of the data recorded over said at least one period of time.
-
公开(公告)号：US10985682B2
公开(公告)日：2021-04-20
申请号：US16749057
申请日：2020-01-22
申请人： ABB Schweiz AG
摘要： A method of controlling a multi-phase electrical machine by means of a power converter, wherein the method includes: a) controlling the electrical machine by utilizing vector space decomposition, VSD, wherein the controlling involves releasing control of the current of a harmonic while maintaining control of the current of the fundamental, b) measuring phase currents of the electrical machine while the control of the current of the harmonic is released, c) transforming the current measurements using VSD to obtain a current signature of the harmonic, and d) determining whether a fault is present in the electrical machine or the power converter based on a comparison of the current signature with a reference current signature of the harmonic.
-
公开(公告)号：US20240035932A1
公开(公告)日：2024-02-01
申请号：US18546094
申请日：2021-02-16
申请人： ABB Schweiz AG
CPC分类号： G01M99/002 , G06F30/23
摘要： A method of generating, from a first thermal model describing the individual thermal behaviour of an electrical machine and a second thermal model describing the individual thermal behaviour of a device, a composite thermal model describing the thermal behaviour of a system having the electrical machine connected to the device, the method including: a) connecting at least one geometric entity of one of the first thermal model and the second thermal model to a plurality of geometric entities of the other one of the first thermal model and the second thermal model, each connection including at least one of a heat source and a thermal impedance, wherein the first thermal model and the second thermal model connected to each other form an initial composite thermal model, b) comparing measured temperatures with corresponding estimated temperatures obtained from the initial composite thermal model, and in case an estimated temperature deviates with more than a threshold value from a measured temperature, c) adjusting at least one of a thermal impedance and a heat source between a pair of geometric entities connected in step a).
-
公开(公告)号：US20230213583A1
公开(公告)日：2023-07-06
申请号：US18001096
申请日：2021-06-15
申请人： ABB Schweiz AG
IPC分类号： G01R31/34 , H02P9/00 , H02P29/024
CPC分类号： G01R31/343 , H02P9/006 , H02P29/024
摘要： A method of monitoring an electrical machine, wherein the method includes: a) obtaining temperature measurement values of the temperature at a plurality of locations of the electrical machine, b) obtaining estimated temperatures at the plurality of locations given by a thermal model of the electrical machine, the thermal model including initial weight parameter values, c) minimizing a difference between the temperature measurement values and the estimated temperatures by finding optimal weight parameter values, d) storing the initial weight parameter values to thereby obtain a storage of used weight parameter values, and updating the optimal weight parameter values as new initial weight parameter values, and repeating steps a)-d) over and over during operation of the electrical machine.
-
-
-
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.016 秒)
