Efficient Control and Five Level MMC Integration for Power Quality Improvement in DFIG Based Wind Energy System

Articles in Press

Document Type : Research Article

Authors

1 Assistant Professor, Department of Electrical and Electronics Engineering, Godavari Institute of Engineering and Technology, Rajahmundry

2 Professor, Department of Electrical and Electronics Engineering, Godavari Global University, Rajahmundry

3 UG Scholar, Department of Electrical and Electronics Engineering, Godavari Institute of Engineering and Technology (A), Rajahmundry

Abstract

Main objectives of the study are to address Power Quality (PQ) problems caused by shifting load demands, including voltage instability and harmonic distortion, which affect system performance and reduce stability. In order to achieve the set goals, the following tasks were accomplished: the design and implementation of a 5-Level Modular Multilevel Converter (MMC) powered by a Double Fed Induction Generator (DFIG)-based wind system, the application of advanced control techniques utilizing D-Q theory and a Hysteresis Current Controller (HCC) for stable current injection, and the incorporation of an LC filter to enhance AC supply quality. The most important results are the reduction of total harmonic distortion (THD) to 1.35%, enhanced voltage stability, and improved overall PQ, validated through MATLAB simulations. The significance of obtained results is the development of a robust and efficient system that addresses PQ issues, offering a substantial improvement over state-of-the-art methods and ensuring high-quality power delivery to grid.

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AUT Journal of Electrical Engineering

Articles in Press, Accepted Manuscript
Available Online from 19 October 2025

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