US 12,237,792 B2
Method for determination of a location of a short circuit fault in a generator arrangement, generator arrangement, wind turbine, computer program and electronically readable medium
Nuno Miguel Amaral Freire, Brande (DK); Rahul R Pillai, Ikast (DK); and Zhan-Yuan Wu, Sheffield (GB)
Assigned to Siemens Gamesa Renewable Energy A/S, Brande (DK)
Appl. No. 17/295,477
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Dec. 20, 2019, PCT No. PCT/EP2019/086822
§ 371(c)(1), (2) Date May 20, 2021,
PCT Pub. No. WO2020/128058, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 18215481 (EP), filed on Dec. 21, 2018.
Prior Publication US 2022/0006414 A1, Jan. 6, 2022
Int. Cl. G01R 31/52 (2020.01); G01R 31/34 (2020.01); H02H 7/06 (2006.01); H02P 29/024 (2016.01)
CPC H02P 29/024 (2013.01) [G01R 31/343 (2013.01); G01R 31/52 (2020.01); H02H 7/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for determination of a location of a short circuit fault in a generator arrangement, wherein the generator arrangement comprises 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 is interrupted by opening the breaker, characterized in that depending on at least one measured signal of a measurand, wherein the measured signal is measured by at least one sensor of the electrical machine, wherein as the at least one sensor of the electric machine, a sensor measuring a vibration and/or an acceleration of at least one component of the electrical machine is used, wherein an accelerometer coupled to a main bearing of the electrical machine and/or to at least one stator plate of the electrical machine is used as the sensor and/or that a microphone measuring sound inside the electrical machine is used as the sensor and/or that a short circuit torque controller is used as the sensor, 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 by evaluation of the torque ripple of the electrical machine.