Small signal stability analysis of fixed speed wind generator including SDBR

Shawon, Mohammad Hasanuzzaman; Al‐Durra, Ahmed; Muyeen, S. M.

doi:10.1109/icelmach.2012.6350182

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…In Fig.2 (b), the first lumped mass represents heavy and big blades, and the second lumped mass represents the low-speed shaft and the rotor of the PMSG. The nomenclature of variables in Fig.2 is as follows: i) w T is the aerodynamic torque from the wind turbine; ii) e T is the electromechanical torque from the generator; iii) 1 J and 2 J are the moments of inertia of blades and generator rotor respectively; iv) 1 D and 2 D are the damping of blades and generator rotor respectively; v) 12 K and 12 D are stiffness and damping coefficient between blades and generator rotor respectively.…”

Section: Model Of Grid-connected Wind Turbinesmentioning

confidence: 99%

“…By varying the torsional stiffness of the shaft from 0.5 12 K (shown in the Appendix) to 1.5 12 K , the traces of the damping ratio and oscillation frequency of all three modes are shown in Fig.11. Figure 11.…”

Section: ) Effect Of the Torsional Stiffness Of The Shaftmentioning

confidence: 99%

“…In [11], based on the small-signal model of a FSIG, a frequency response approach is used to evaluate the sensitivity of system modes to system parameters. In [12], a complete dynamic equation of a FSIG system is derived and the relation between its dynamic modes and state variables are studied through eigenvalues analysis. In [13], a DFIG system is formulated as a multivariable feedback system and a new performance robustness criterion for performance evaluation is provided.…”

Section: Introductionmentioning

confidence: 99%

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Small-signal Modeling and Modal Analysis of a PMSG-based Wind Power System

Wu¹,

Xie²,

Zhao³

et al. 2017

dtmse

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A unified small-signal model of a wind power system is developed in this paper to study the small-signal stability of permanent magnet synchronous generator (PMSG)-based wind turbines connected to the power grid. The model is composed of both mechanical system and electrical system. A two-mass shaft model for the mechanical system is provided to analyze the dynamic and steady state behaviors. Meanwhile, PMSG, converter system and transmission line of the electrical system are modeled separately to build a unified small-signal model of the PMSG-based wind power system. Then, based on the unified small-signal model, eigenvalue analysis for the whole system is presented, which helps discover the relation between different modes and state variables. Cases involving various series compensation degrees, length of transmission lines and the stiffness of shafts are carried out to study how the modes are influenced by relevant variables specifically. The relatively independent modules of the unified small-signal model allow for easy expansion and modification for various research purposes. The simulation results show that the mechanical and electrical systems of PMSG-based wind turbines are independent to some degree with the implementation of a full-scale converter system.

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Section: Model Of Grid-connected Wind Turbinesmentioning

confidence: 99%

Section: ) Effect Of the Torsional Stiffness Of The Shaftmentioning

confidence: 99%