公开(公告)号：US20190245465A1

公开(公告)日：2019-08-08

申请号：US16267894

申请日：2019-02-05

Applicant: GE Energy Power Conversion Technology Ltd

Inventor： Aravazhi ANABARASU ,  Ramasamy ANABARASU ,  Martin BUTCHER ,  Allan CRANE

IPC: H02P9/08 ,  H02K7/18 ,  H02P9/02 ,  H02M7/04 ,  F03D7/02

CPC classification number: H02P9/08 ,  F03D7/0244 ,  F03D7/026 ,  F05B2270/1011 ,  F05B2270/303 ,  F05B2270/327 ,  H02K7/183 ,  H02M7/04 ,  H02P3/22 ,  H02P9/00 ,  H02P9/02 ,  H02P2101/15

Abstract: A method of controlling a power system that includes an electrical machine, e.g., wind turbine generator, a power converter, a DC circuit and a dynamic braking system (DBS) having a braking circuit having a braking resistor and being connected in series to the DC circuit, is provided. The method includes operating the DBS and controlling operation of the electrical machine based on a prevailing temperature of the braking circuit, stopping the electrical machine and controlling the electrical machine to be restarted at its rated output power once the prevailing temperature of the braking resistor reaches or falls below a lower temperature threshold. The electrical machine may be restarted at a lower output power and after restarting, its output power can be increased based on a power starting profile as the braking resistor cools.