Initialization of DFIG based wind generating system

Amutha, N.; Kumar, B. Kalyan

doi:10.1109/npsc.2014.7103814

Cited by 6 publications

(1 citation statement)

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“…In the study of Slootweg, Polinder, and Kling, it is shown a procedure to initialize WTs with different electrical generators for power system dynamic simulations, but it makes reference to an iterative process to obtain the final solution. In the study of Amutha and Kalyan, a method for obtaining steady‐state solution with four unknown variables is presented, but this method is based on power flow analysis, so the DFIG is modeled using a reduced‐order model (from the point of view of an electrical power system). A recent method proposed by Wu and Xie suggests calculating steady‐state operating conditions for eigenvalue analysis of DFIG‐based WTs without making use of an iterative process, just by ignoring the dynamic terms of the equations.…”

Section: Introductionmentioning

confidence: 99%

Initialization of DFIG wind turbines with a phasor‐based approach

Rolán

Pedra

2018

Wind Energy

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The objective of this paper is to propose a simple approach to solve the steady state of a wind turbine (WT) equipped with a doubly fed induction generator (DFIG), which can be used to initialize dynamic studies of the machine. The idea is to model the rotor‐side converter (RSC) as a constant current source connected to the rotor of the DFIG. The resulting equivalent circuit consists of a voltage source in series with a reactance, which makes it possible to obtain simple phasor expressions that can be used to obtain the Park components of the variables. The proposed method is compared with the traditional Newton–Raphson algorithm, showing that it is easier and faster to implement, as it makes use of the phasor expressions and it does not require an iterative process to obtain the final solution. Finally, the results of the proposed method are used to simulate a 2‐MW DFIG‐based WT under three‐phase faults, considering three different WT‐operating points. In these simulations, the idea of constant rotor current is extrapolated to the entire event. The simulated results show that both current at torque peaks are reduced. The analytical study and the simulations have been carried out in Matlab™.

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Section: Introductionmentioning

confidence: 99%