Work

Optimized double-stage fractional order controllers for DFIG-based wind energy systems: A comparative study

Year: 2025

Type: article

Abstract: • A double stage controller is proposed for direct power control of DFIG-based wind energy systems. • The Remora Optimization and Grey Wolf Algorithms are utilized to optimize the controller's performance. • System behaviour is effectively tracked using four distinct cost functions. • Stability and robustness are ensured in the complex system. This paper presents a nonlinear robust control approach based on a Fractional-Order Proportional-Integral-Derivative–Fractional-Order Proportional-Integral (FOPID-FOPI) controller, applied to the direct power control of a Doubly Fed Induction Generator (DFIG) in Wind Energy Conversion Systems (WECS). To achieve the desired control objectives, two dual-stage FOPID-FOPI controllers were implemented, resulting in a total of sixteen tunable parameters. Given the complexity of tuning these parameters, metaheuristic optimization techniques, specifically the Remora Optimization Algorithm (ROA) and Grey Wolf Optimization (GWO), were employed to optimize the controller gains by minimizing various cost functions, including the Integral of Time-multiplied Square Error (ITSE), Integral of Square Time-multiplied Square Error (ISTSE), Integral Square Time-multiplied Square Error (ISTES), and Integral Time Absolute Error (ITAE).To evaluate performance, key criteria such as response time, and ripple of the stator power in the DFIG were analyzed. The results demonstrate that the ITAE-based ROA-FOPID-FOPI controller achieves the shortest response time of 0.23 ms for reactive power, 0.1 ms for active power, and a significant reduction in power ripple—75% for active power and 66.66% for reactive power. Additionally, the ITAE-based ROA-FOPID-FOPI controller reduces the Total Harmonic Distortion (THD) by 17.07% compared to the GWO-optimized controller across all cost functions.Overall, the findings highlight the superior performance of the ITAE-based ROA-FOPID-FOPI controller in enhancing power quality and dynamic response in DFIG-based WECS.

Source: Results in Engineering

DOI: 10.1016/j.rineng.2025.104584

Authors: Mabrouk Dahane, Abdelkrim Benali, Hamza Tedjini, Aissa Benhammou, Mohamed Amine Hartani, Hegazy Rezk

Institutions: Centre Universitaire Nour Bachir El Bayadh, University of Bechar, Ahmed Draia University, Prince Sattam Bin Abdulaziz University

Language: English

Topic: Wind Turbine Control Systems

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $1,940