Fractional-Order Hyperbolic Tangent Sliding Mode Control for Chaotic Oscillation in Power System
Author(s) -
Darui Zhu,
W. C. Zhang,
Chongxin Liu,
Jiandong Duan
Publication year - 2021
Publication title -
mathematical problems in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.262
H-Index - 62
eISSN - 1026-7077
pISSN - 1024-123X
DOI - 10.1155/2021/6691941
Subject(s) - control theory (sociology) , oscillation (cell signaling) , chaotic , lyapunov exponent , tangent , robustness (evolution) , nonlinear system , mathematics , bifurcation diagram , bifurcation , sliding mode control , synchronization of chaos , computer science , physics , control (management) , geometry , biochemistry , chemistry , genetics , quantum mechanics , artificial intelligence , gene , biology
Chaotic oscillation will occur in power system when there exist periodic load disturbances. In order to analyze the chaotic oscillation characteristics and suppression method, this paper establishes the simplified mathematical model of the interconnected two-machine power system and analyzes the nonlinear dynamic behaviors, such as phase diagram, dissipation, bifurcation map, power spectrum, and Lyapunov exponents. Based on fractional calculus and sliding mode control theory, the fractional-order hyperbolic tangent sliding mode control is proposed to realize the chaotic oscillation control of the power system. Numerical simulation results show that the proposed method can not only suppresses the chaotic oscillation but also reduce the convergence time and suppress the chattering phenomenon and has strong robustness.
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