公开(公告)号：US12078680B2

公开(公告)日：2024-09-03

申请号：US17730546

申请日：2022-04-27

申请人： Siemens Gamesa Renewable Energy A/S

发明人： Ravindra Bhide ,  Nuno Miguel Amaral Freire ,  Rahul R Pillai ,  Ireneusz Grzegorz Szczesny

IPC分类号： G01R31/34 ,  F03D7/02 ,  F03D9/25 ,  F03D17/00 ,  H02P9/02

CPC分类号： G01R31/346 ,  F03D7/0224 ,  F03D7/026 ,  F03D9/25 ,  F03D17/00 ,  H02P9/02 ,  F05B2220/706 ,  F05B2260/70 ,  F05B2260/80 ,  F05B2260/85

摘要： A method for detecting an electrical fault in the stator of an electric machine is provided, wherein the stator includes multiple groups of windings, wherein the windings of each group are assigned to a respective phase of the electric machine, including the steps of: determining a respective current firstly between a subgroup of one of the groups of windings and a distinct further subgroup of the same group of windings and/or secondly between a subgroup of one of the groups of windings and a neutral point, and/or thirdly between a neutral point and either a further neutral point or to a common neutral point connected to at least the neutral point and the further neutral point, evaluating a fault condition, wherein the fulfilment of the fault condition depends on the respective determined current, and outputting a fault signal to personal and/or a device when the fault condition is fulfilled.

公开(公告)号：US20220357397A1

公开(公告)日：2022-11-10

申请号：US17730546

申请日：2022-04-27

申请人： Siemens Gamesa Renewable Energy A/S

发明人： Ravindra Bhide ,  Nuno Miguel Amaral Freire ,  Rahul R Pillai ,  Ireneusz Grzegorz Szczesny

IPC分类号： G01R31/34 ,  H02P9/02 ,  F03D9/25 ,  F03D7/02 ,  F03D17/00

摘要： A method for detecting an electrical fault in the stator of an electric machine is provided, wherein the stator includes multiple groups of windings, wherein the windings of each group are assigned to a respective phase of the electric machine, including the steps of: determining a respective current firstly between a subgroup of one of the groups of windings and a distinct further subgroup of the same group of windings and/or secondly between a subgroup of one of the groups of windings and a neutral point, and/or thirdly between a neutral point and either a further neutral point or to a common neutral point connected to at least the neutral point and the further neutral point, evaluating a fault condition, wherein the fulfilment of the fault condition depends on the respective determined current, and outputting a fault signal to personal and/or a device when the fault condition is fulfilled.

公开(公告)号：US20220006414A1

公开(公告)日：2022-01-06

申请号：US17295477

申请日：2019-12-20

申请人： Siemens Gamesa Renewable Energy A/S

发明人： Nuno Miguel Amaral Freire ,  Rahul R Pillai ,  Zhan-Yuan Wu

IPC分类号： H02P29/024 ,  H02H7/06 ,  G01R31/34 ,  G01R31/52

摘要： Provided is a method for determination of a location of a short circuit fault in a generator arrangement, wherein the generator arrangement includes an electrical machine and at least one channel, wherein the or each channel includes a breaker, a converter unit and a set of stator windings of the electrical machine connected to the converter unit via the breaker, wherein upon an occurrence of a short circuit in a channel, the connection between the set of stator windings and the converter unit interrupted by opening the breaker, wherein depending on at least one measured signal of a measurand, wherein the measured signal is measured by at least one sensor of the electric machine and wherein the measurand describes a torque ripple of the electrical machine, either the electrical machine or the converter unit of the channel is determined as location of the short circuit fault.