Simulation of voltage dip event in fixed-speed wind turbines: fatigue evaluation

Title:

Simulation of voltage dip event in fixed-speed wind turbines: fatigue evaluation

Creator:

Veluri, Badrinath, Santos-Martin, David, and Jensen, Henrik Myhre

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:f31a105b-f4bb-4de5-a272-6d3dfd39f8b4
uuid:f31a105b-f4bb-4de5-a272-6d3dfd39f8b4

Subject:

voltage dip, electro-mechanical model, drivetrain, induction generator, rainflow count, and fatigue

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Grid code modifications require the in service fixed speed wind turbines to ride-through grid faults. Voltage dips due to electrical grid faults generate transients of the generator electromagnetic torque. These transients result in significant stresses and vibrations affecting the fatigue life of the components. An electro-mechanical model was built to simulate the grid faults that excite the asynchronous generator with poorly damped stator flux oscillations. These oscillations cause transients of the generator electromagnetic torque. This article focuses in estimating the resulting significant stresses transients affecting the fatigue life of drivetrain system due to voltage dips. A rainflow cycle counting method was developed to evaluate the fatigue life of the mechanical system. The methodology analyses the stress history and estimates the mean and amplitudes of the counted cycles, and time of duration to calculate the accumulated damage occurred during the voltage dip event. and Obsahuje seznam literatury

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

143-154

Source:

Engineering mechanics: international journal for theoretical and applied mechanics | 2012 Volume:19 | Number:2-3

Harvested from:

CDK

Metadata only:

false