Review on wind turbines with focus on drive train system dynamics

In this paper, we focus on modeling, oscillatory stability analysis of the drive train system and the transient performances of wind turbine with doubly fed induction generator (DFIG) wind turbines, which are evaluated under sub-synchronous operation during the grid voltage fault. Results have shown that the oscillatory stability and shafting parameters have a close relationship, it is necessary to consider the drive train system while the transient performances of DFIG wind turbines are analyzed.

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The effect of the rotor adjustment on the vibration behaviour of the drive-train system for a 5 MW direct-drive wind turbine

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406217729418 ◽

2017 ◽

Vol 232 (17) ◽

pp. 3027-3044 ◽

Cited By ~ 2

Author(s):

Kan Ye ◽

Jinchen Ji

Keyword(s):

Wind Turbine ◽

Wind Turbines ◽

Drive Train ◽

Direct Drive ◽

Weight Changes ◽

Pull Force ◽

Rotor Position ◽

Unbalanced Magnetic Pull ◽

Wide Range ◽

Train System

Direct-drive wind turbines, different from the standard geared wind turbines, widely use a direct-drive permanent-magnet generator to avoid the gearbox failures. In the absence of a gearbox in the drive-train system, the direct-drive generator operates at low rotating speeds. Thus direct-drive wind turbines require a larger sized generator (higher weight) to transfer the kinetic energy into electrical energy. The inherent unbalanced magnetic pull force of the generator can have impact on the vibration behaviour of the drive-train system. This paper studies the effect of rotor position and weight adjustment on the vibration behaviour of the drive-train system within a 5 MW direct-drive wind turbine by considering the unbalanced magnetic pull force. The adjustment of rotor position and weight changes the location of the centre of gravity of the drive-train system. The drive-train system which consists of the main shaft, rotor, hub and blades is modelled as a four degree-of-freedom nonlinear system. Both rotor displacement and bearing forces are obtained for a wide range of rotor position and weight under different rotating speeds. The obtained results would provide useful information on the optimized rotor position and mass ratio to improve the performance of the drive-train system.

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Improved speed regulation and mitigation of drive-train torsion fatigue in flexible wind turbines, using disturbance utilization control: Part one

2009 41st Southeastern Symposium on System Theory ◽

10.1109/ssst.2009.4806789 ◽

2009 ◽

Cited By ~ 3

Author(s):

Glenn A. Parker ◽

C. D. Johnson

Keyword(s):

Wind Turbines ◽

Drive Train ◽

Speed Regulation ◽

Utilization Control ◽

Control Part

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Modeling Wind Turbines in the Simulation of Power System Dynamics

Scientific Journal of Riga Technical University Power and Electrical Engineering ◽

10.2478/v10144-010-0018-y ◽

2010 ◽

Vol 26 (1) ◽

pp. 41-47 ◽

Cited By ~ 1

Author(s):

Istvan Erlich ◽

Fekadu Shewarega ◽

Oliver Scheufeld

Keyword(s):

Power System ◽

System Dynamics ◽

Wind Turbines ◽

Reactive Power ◽

Induction Machine ◽

Generic Model ◽

Variable Speed ◽

Interconnected System ◽

Power System Dynamics ◽

Space Phasor

Modeling Wind Turbines in the Simulation of Power System DynamicsThis paper deals with the modeling of variable speed wind turbines for stability studies. Using the space-phasor representation and the fundamental relationships governing the operation of the machine quasi stationary model, suitable control algorithms for the simulation of the doubly-fed induction machine (DFIM) as well as the permanent magnet synchronous machine (PMSM) operating on an interconnected system are developed. The control schemes include the pitch-angle/speed control and the decoupled control of the real and reactive power outputs. As an additional modeling option, the generic model for variable speed machine has been introduced. The models were then implemented on a representative test network, and simulations have been carried out to observe the response of the control system to typical abnormal situations such as three phase grid faults to compare the accuracy of the generic models with the detailed quasi-stationary (QSS) models.

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