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Adaptive Controller Design for SMIB System Using Sliding Mode Control

  • Subhranshu Sekhar PuhanEmail author
  • Sobhit Panda
  • Animesh Kumar
Conference paper
  • 12 Downloads
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 665)

Abstract

Sliding mode control (SMC) is one of the robust control techniques with discontinuous control action. The fixed high gain in conventional SMC may lead to high-frequency oscillations in the control input known as chattering. The chattering can excite the unmodeled dynamics of the system and results in instability. Adaptive sliding mode control is one of the methods to attenuate the effect of chattering in which the gain of controller is changed based on the error dynamics. In advance SMC requires the knowledge of the time derivative of the sliding variable, which is discontinuous, so it is not measurable. This paper proposes an modified adaptive sliding mode controller based on reachability condition of sliding mode control, which can reduce the gain even in the reaching phase of the sliding mode, and also the gain is varied according to the estimated disturbance using a disturbance observer. The novelty lies to analyze the disturbances in the input dynamics and estimate the disturbance through a Leunberg observer design. The proposed control action is then applied to a single machine infinite bus, having constant voltage and frequency (SMIB) power system having DC1A exciter and power system stabilizer associated with it to evaluate the performances of the controller. At last, numerical simulation results are presented for validation purpose.

Keywords

SMC Adaptive SMC Nonlinear control SMIB Disturbance observer nonlinear control Chattering 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Subhranshu Sekhar Puhan
    • 1
    Email author
  • Sobhit Panda
    • 2
  • Animesh Kumar
    • 1
  1. 1.Department of Electrical EngineeringSiksha ‘O’ Anusandhan (Deemed to be University)BhubaneswarIndia
  2. 2.Department of Electronics InstrumentationCETBhubaneswarIndia

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