Torsional Vibrations in the Drivetrain of DFIG- and PMG-Based Wind Turbines: Comparison and Mitigation

2015 ◽  
Author(s):  
Fariba Fateh ◽  
Warren N. White ◽  
Don Gruenbacher
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Sliding Mode ◽  
Torsional Vibrations ◽  
Doubly Fed Induction Generator ◽  
Voltage Dip ◽  
Power Oscillations ◽  
Control Scheme ◽  
Doubly Fed ◽  
Mechanical Disturbances

In this paper, torsional vibrations in a five-mass drivetrain of a doubly fed induction generator (DFIG)-based and a permanent magnet generator (PMG)-based wind turbine are investigated through simulations. The simulated model includes aerodynamics of a 750kW wind turbine, as well as the dynamics of the generator, gearbox, and back-to-back power converters. In this study, the effectiveness of a sliding mode based control scheme to damp the drivetrain torsional vibrations for the events of a voltage dip occurring on the power grid and a wind speed variation is presented. The simulation results demonstrate mechanical disturbances have similar impacts on the drivetrain of DFIG-based and PMG-based wind turbines. However, the back-to-back converters in a PMG-based wind turbine effectively isolate the effects of power oscillations on the drivetrain.

Neural High Order Sliding Mode Control for Doubly Fed Induction Generator based Wind Turbines

2022 ◽  
Vol 20 (2) ◽  
pp. 223-232
Author(s):  
Larbi Djilali ◽  
Anuar Badillo-Olvera ◽  
Yennifer Yuliana Rios ◽  
Harold Lopez-Beltran ◽  
Lakhdar Saihi
Keyword(s):  
Sliding Mode Control ◽  
Wind Turbines ◽  
Sliding Mode ◽  
High Order ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Mode Control ◽  
Doubly Fed

Unbalanced Control Strategy for DFIG Used in Wind Turbines

2013 ◽  
Vol 805-806 ◽  
pp. 430-435
Author(s):  
Chang Xi Huang ◽  
Shu Ying Yang ◽  
Liu Wei Chen
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Power Grid ◽  
Current Control ◽  
Doubly Fed Induction Generator ◽  
Test Bed ◽  
Negative Sequence ◽  
Synchronous Reference Frame ◽  
Sequence Components ◽  
Doubly Fed

Unbalanced input voltages would make doubly fed induction generator (DFIG)-based wind turbine operating performance deteriorate, such as shaft tremble, temperature increasing, and so on, even make it cut out of the power grid. Meanwhile, without proper control the power ripples generated from wind turbines may further aggravate power grid. Considering the unbalanced conditions, DFIG was modeled in dual synchronous reference frame (SRF), namely the positive one and the negative one, based on which the dual PI current controllers were designed. To implement the dual current control, the sensing variables were divided into positive and negative sequence components, which were controlled in positive and negative SRF respectively. At the same time, to synchronize with the positive and negative sequence voltage components, a phase latch loop (PLL) control was designed. Experimental results on 11kW DFIG wind turbine test bed validated the designed control system.

scholarly journals Using Adaptive Second Order Sliding Mode to Improve Power Control of a Counter-Rotating Wind Turbine under Grid Disturbances

2020 ◽  
Vol 22 (6) ◽  
pp. 427-434
Author(s):  
Adil Yahdou ◽  
Abdelkadir Belhadj Djilali ◽  
Zinelaabidine Boudjema ◽  
Fayçal Mehedi
Keyword(s):  
Power Control ◽  
Wind Turbine ◽  
Control Method ◽  
Sliding Mode ◽  
Second Order ◽  
Control Scheme ◽  
Doubly Fed ◽  
Twisting Algorithm ◽  
Unbalanced Network ◽  
Second Order Sliding Mode

This work presents a new control strategy for counter-rotating wind turbine (CRWT) driven doubly-fed induction generator (DFIG) under grid disturbances, such as unbalanced network voltage scenarios. The proposed strategy based on the power control used dynamic gains second order sliding mode control (SOSMC). The power control of a DFIG by SOSMC widely based on the super-twisting (ST) algorithm with invariable parameters and sign functions. The proposed control method consists in using dynamic-parameters ST algorithm that ensures a better result than a conventional strategy. The proposed control scheme used 2 sliding surfaces such as reactive and active powers to control them. Also, the sign functions are replaced by saturation (sat) functions in order to minimize the chattering problems. Simulation results depicted in this research article have confirmed the good usefulness and effectiveness of the proposed adaptive super-twisting algorithm of the CRWT system during grid disturbances.

Enhanced Sliding Mode MPPT and Power Control for Wind Turbine Systems Driven DFIG (Doubly-Fed Induction Generator)

2016 ◽  
Vol 9 (4) ◽  
pp. 207
Author(s):  
Moussa Reddak ◽  
Abdelmajid Berdai ◽  
Anass Gourma ◽  
Jamal Boukherouaa ◽  
Abdelaziz Belfiqih
Keyword(s):  
Power Control ◽  
Wind Turbine ◽  
Sliding Mode ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Doubly Fed
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