Implementation of self-regulating controller for integrating DFIG-based grid system with load interruption

A. Santhi Mary Antony () and D. Godwin Immanuel ()
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A. Santhi Mary Antony: Sathyabama Institute of Science and Technology
D. Godwin Immanuel: Sathyabama Institute of Science and Technology

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2022, vol. 24, issue 6, No 45, 8485-8503

Abstract: Abstract Nowadays, wind energy is a booming renewable energy source due to its characteristics like zero emission, clean and easy availability. The rotor and grid side converter in WECS is articulated by a DC link component. The capacitor plays the role of DC link component. The DC link in WECS is replaced by a Reboost converter. The Reboost converter is a unidirectional DC-DC converter performing boosting operation in the WECS. The consummation of the Reboost converter for DFIG-based grid-connected system was reformed. A controller provides a closed loop operation with a feedback system. A feedback system samples the output with the reference input and produces a comparable output. In this paper, a novel closed loop topology had enforced for a Reboost converter with PI and FOPID controllers for DFIG-based grid systems. PI and FOPID controller accomplishes its closed loop operation for a grid-connected system with load disturbance. Time domain analysis of Reboost converter using PI and FOPID controller is determined, and steady-state errors are evaluated. A comparative analysis of PI and FOPID controller is implemented with reference to time domain specification like rise time, peak time, settling time, etc. The MATLAB simulation results on PI and FOPID controller expedient that FOPID controller is more predominant. The two additional parameters of FOPID controller provide high adjustable time and frequency response, i.e., integral order (λ) and derivative (µ). These parameters in FOPID controller are tuned by Ziegler–Nichols type tuning rules. FOPID controller bestows versatile time response which minimizes the steady-state error of Reboost converter in closed loop operation.

Keywords: Fractional order proportional integral derivative controller (FOPID); Proportional integral controller (PI); Steady-state error (Ess); Rise time (tr); Peak time (tp); Settling time (ts); Reboost converter; Wind energy conversion systems (WECS) (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s10668-021-01795-1

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