Title :
The Digital Soft Braking for Wind Turbine
Author :
Sun, Yong ; Lin, Yonggang ; Li, Wei ; Zhang, Dahai
Author_Institution :
State Key Lab. of Fluid Power Transm. & Control, Zhejiang Univ., Hangzhou, China
Abstract :
The mathematical models of hydraulic braking system were built through studying the braking system of the wind turbine. The AMESim software was used to establish the simulation model of hydraulic braking system and the controller model, which was employed to the coupling of the simulation, constructed in Matlab/Simulink. The designed soft braking system was tested in the wind turbine. The analysis results of the simulation and the test show that the rotor speed decreases gently and the fluctuation of the gearbox torque is diminished at the soft braking based on adjusting the duty cycle of PWM which controls the ON/OFF of the high-speed switch valve.
Keywords :
braking; digital systems; hydraulic systems; mathematics computing; power engineering computing; torque control; valves; wind turbines; AMESim software; Matlab; PWM duty cycle; Simulink; digital soft braking; gearbox torque; high speed switch valve; hydraulic braking system; mathematical models; rotor speed; simulation model; soft braking system; wind turbine; Force; Mathematical model; Rotors; Torque; Valves; Wind speed; Wind turbines;
Conference_Titel :
E-Product E-Service and E-Entertainment (ICEEE), 2010 International Conference on
Conference_Location :
Henan
Print_ISBN :
978-1-4244-7159-1
DOI :
10.1109/ICEEE.2010.5660992
