Rеvuе des Energies Renouvelables
Volume 21, Numéro 4, Pages 635-649
2018-12-31

Modeling And Analysis Of Boost Converter In Small-signals Applied To The Wind Energy Conversion System Using Matlab/simulink



Authors : Nisso N. . Raïdandi D. . Djongyang N. . Menga F.d. .

Abstract

The problem of stabilizing a boost converter in small-signal situations using linear control laws is derived by the means of oriented circuit procedure. After establishing a small-signal circuit model for the boost regulator including state-feedback, conditions for the stability of circuit are studied. Thereafter, a linear analysis is performed in order to design the desired dynamics and robust behavior of the boost converter. The linear analysis assumed shows that only a state feedback gain matrix is necessary, provided that the coordinates of the equilibrium point are known. This operation is done by using the root locus methodto choose the eigenvalue of this gain vector. It aims at presenting how boost converter averaged behavior can be tailored by means of feedback control structures. Various control structures with different design methods have become classical in control systems theory with a similar degree of efficiency. It is generally assumed that the obtained control input is applied to boost converter by using pulse-width modulation. Performance of the proposed pole placement method is evaluated by Simpower/Matlab simulation at the equilibrium operating points chosen. To verify a feasibility of the proposed method, set parameters of system is implemented. The control scheme is verified through Matlab simulation, which is present to verify the performance of proposed method and simulation results validate the analytical predictions. The circuit studied is an element of the wind energy conversion system (WECS).

Keywords

Pole placement, Boost converters, Small-signal stability, Gain vector, WECS.

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