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Two degree of freedom fractional PI scheme for automatic voltage regulation

Padiachy, Vadan and Mehta, Utkal V. and Azid, Sheikh I. and Prasad, Shivneel and Kumar, Rohinesh (2021) Two degree of freedom fractional PI scheme for automatic voltage regulation. Engineering Science and Technology, an International Journal, NA . NA. ISSN 2215-0986

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    Abstract

    The effectiveness of the inferential control scheme based on robust fractional-order proportional integral (FOPI) controller is presented for automatic voltage regulation (AVR) applications. The method uses two degree of freedom (2DOF) in FOPI scheme, which is tuned with the whale optimization algorithm (WOA). Actually, any AVR needs to keep the reactive power of synchronous generator at demand level, stable voltage and frequency of the electrical power supplies. In this study, the 2DOF FOPI controller is proposed to deviate away from the standard integer order, to show the superiority of extra degree of freedom in both structure and controller. To improve the AVR performance, a new performance measure is proposed for the parameter tuning. The method acquires the significant robustness in parameter perturbation and disturbance interruptions. It is observed in the step response quality that the overshoot and settling time can be reduced to approximately by half than the recently published scheme. The various analyses are shown to accept the dominance of the proposed controller in terms of robustness.

    Item Type: Journal Article
    Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > Robotics and Automation
    Divisions: School of Information Technology, Engineering, Mathematics and Physics (STEMP)
    Depositing User: Utkal Mehta
    Date Deposited: 31 Aug 2021 15:12
    Last Modified: 31 Aug 2021 15:12
    URI: http://repository.usp.ac.fj/id/eprint/12942
    UNSPECIFIED

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