HEG-T2F: Hybrid Ebola Gannet-Based Type 2 Fuzzy-Based Controller for Modular Multilevel Converter

Abstract

Modular multilevel converter (MMC) plays a significant part in high voltage power electronic industries due to its wide range of benefits such as modularity and reliability. The circulating component exists between three-phase half-bridge MMC causing certain issues in the design of MMC such as system loss, voltage instability, current disturbance, etc. To handle such problematical factors, a novel circulating current control mechanism named ‘hybrid ebola gannet based generalized type 2 fuzzy controller (HEG-GT2FC)’ is proposed in this paper. Here, the main controlling parameters of MMC namely harmonic distortion, current ripple, and circulating current settling time are adjusted or minimized using the generalized type 2 fuzzy controller. The hybrid ebola gannet algorithm solves the high voltage conversion problem by determining the optimal solution. The proposed HEG-GT2FC mechanism is evaluated using the MATLAB/Simulink tool. The performance of the proposed HEG-GT2FC mechanism is investigated in terms of measures such as current ripple, total harmonic distortion, and circulating current settling time. The simulation results illustrate that the proposed HEG-GT2FC mechanism achieves a very low percentage of current ripple (0.09%), total harmonic distortion (4.98%), and circulating current settling time (0.8 sec) than other compared state of art techniques.

Keywords:

• modular multilevel converter
• capacitor voltage
• circulating current
• ebola optimization algorithm
• gannet optimization algorithm
• generalized type 2 fuzzy controller

AUTHORS’ CONTRIBUTIONS

All authors agreed on the content of the study. APD, BN and MV collected all the data for analysis. APD agreed on the methodology. APD, BN and MV completed the analysis based on agreed steps. Results and conclusions are discussed and written together. The author read and approved the final manuscript.

ETHICS APPROVAL

This article does not contain any studies with human or animal subjects performed by any of the authors.

INFORMED CONSENT

Informed consent was obtained from all individual participants included in the study.

DATA AVAILABILITY STATEMENT

Data sharing is not applicable to this article as no new data were created or analyzed in this study.

DISCLOSURE STATEMENT

The authors declare that they have no conflict of interest.

Additional information

Notes on contributors

Anuja Prashant Diwan

Anuja Prashant Diwan is currently working as assistant professor in Department of Electrical and Electronics Engineering, Jerusalem College of Engineering, Chennai, India. She obtained her B.E. degree (First Class) from Pune University, Maharashtra, in 1995, M.E. degree (First class with distinction with thirteenth AU rank) in Power Electronics and Drives from Anna University, Chennai in 2016. Currently She is pursuing her Ph.D. in the field of Modular Multilevel Converter as a part time scholar in Anna University. She has 19 years of teaching experience. She has published 5 papers in International Journals and 7 papers in National and International Conferences Proceedings .She has attended many Faculty Development Programs (FDP’s) organized by various reputed institutions. She is Member of IEI. She has also completed online NPTEL coursera. Her current research interest include power electronics and drives, Modular Multilevel converter.

Booma Nagarajan

Booma Nagarajan obtained her DEEE from Thiagarajar Polytechnic College, Salem, T.N in 1997. She received her B.E degree in Electrical Electronics Engineering from Madras University, Chennai, India in 2000, M.E. degree in Power Systems Engineering from College of Engineering, Guindy, Anna University, and Chennai, India in 2007. PhD degree in Power Electronics and Drives from Anna University, Chennai, India in 2015. She has 21 years of teaching experience. She is currently working as Professor in the Department of Electrical and Electronics Engineering at Jerusalem College of Engineering, Pallikaranai, and Chennai. She has Technical papers in over 16 International Journals and 55 Technical papers in National and International Conferences Proceedings / Journals. Her research interests include resonant inverters for induction heating intelligent controllers and power quality.

Venmathi Mahendran

M. Venmathi received the B.E. degree from Madras University, Chennai, India, in 2003, the M.E. degree in power systems engineering from the College of Engineering, Guindy, Anna University, Chennai, in 2007, and the Ph.D. degree in solar photo voltaic (PV) systems interfacing converters from Anna University, in 2017. She has been working in the teaching field for about 15 years. She is currently an Associate Professor with the St. Joseph’s College of Engineering, Chennai. She has published many papers in conferences and journals. Her areas of interest include solar PV systems and power conversion techniques for renewable energy sources.