Title :
A redundant electrical braking system for wind turbine generators
Author :
Wang, Timothy CY ; Yang, Wenqiang ; Yuan, Xiaoming ; Teichmann, Ralph
Author_Institution :
GE Global Res. Center, Shanghai
Abstract :
Mechanical brake is typically used in wind turbine, which typically suffers from frequent wear-out, more trip opportunities and high maintenance cost. To addressing this issue, a redundant electrical braking system is proposed in this paper. It comprises a conventional dynamic brake connected to the converter DC link and a fully controllable resistive load connected to the generator terminals. The resistive load can be engaged by an active power semiconductor and a NC(normally closed) contactor.
Keywords :
braking; contactors; power semiconductor devices; turbogenerators; wind turbines; active power semiconductor; converter DC link; dynamic brake; electrical braking system; fully controllable resistive load; generator terminals; mechanical brake; normally closed contactor; wind turbine generators; Contacts; Costs; DC generators; Hybrid power systems; Mesh generation; Power system dynamics; Resistors; Torque control; Wind energy generation; Wind turbines; Electrical braking; crow bar; dump load; wind turbine;
Conference_Titel :
Power Electronics and Applications, 2007 European Conference on
Conference_Location :
Aalborg
Print_ISBN :
978-92-75815-10-8
Electronic_ISBN :
978-92-75815-10-8
DOI :
10.1109/EPE.2007.4417293
