A Novel Approach to Performance Evaluation of Current Controllers in Power Converters and Electric Drives Using Non-Parametric Analysis

Authors

Keywords:

current controllers, power converters, electric motors, decision-making, non-parametric methodology

Abstract

In the field of current controllers for power converters and electric motor units, conventional figures of merit (FMs) such as mean squared error (MSE), integral of time multiplied by absolute error (ITAE), or total harmonic distortion (THD) have traditionally been used. The stochastic nature of these FMs introduces variability, which often results in inaccurate comparisons of the controllers' performance. To address this issue, a parametric statistical methodology has recently been proposed. However, it presents certain limitations, such as the assumption of normality. In response to this, the adoption of a non-parametric methodology is suggested in this work, which promises a precise evaluation of the efficiency of current controllers. In this study, we demonstrate that, under parametric approach, when the assumption of normality is violated, there is a significant increase in Type I error. Furthermore, we show that the non-parametric Mann-Whitney U test offers greater sensitivity compared to its parametric counterpart under these circumstances. Thus, the newly proposed methodology aims to optimize the decision-making process in designing high-performance current controllers for applications in power converters and electric motors. This allows for design decisions grounded in rigorous and statistically-based evaluations. The effectiveness of this methodology is confirmed through its application to a real dataset, enhancing its practicality and contributing to a deeper understanding of the subject matter.

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Author Biographies

Gustavo Ignacio Rivas-Martínez, Universidad Nacional de Asunción, Facultad de Ciencias Exactas y Naturales

Gustavo Ignacio Rivas-Martínez was born in Asuncion, Paraguay, in 1980. He attained his B.Sc. and M.Sc. degrees in Statistics from the Universidad Nacional de Asunción (UNA), Paraguay, in 2008 and 2012, respectively. Later, he completed his Ph.D. in Statistics and Operations Research at the Universidad de Sevilla, Spain, in 2017. He holds a position as a full professor in the Statistics Department of the Faculty of Exact and Natural Sciences at the UNA. His academic pursuits are centered on statistical inference methods, encompassing application and theoretical advancements in hypothesis testing across diverse scientific domains.

Jorge Rodas, Laboratory of Power and Control Systems, Facultad de Ingenieria, Universidad Nacional de Asuncion

Jorge Rodas (S'08--M'12--SM'19) obtained his PhD through a joint university program between Universidad Nacional de Asuncion (UNA) and Universidad de Sevilla in 2016. He is a Professor and Research Director at Facultad de Ingenieria, UNA. With over 130 published papers, his research focuses on advanced control applications for power electronic converters, renewable energy systems, and electric motor drives. He received the Paraguayan National Science Award. Dr. Rodas is a fellow of the Institute of Engineering and Technology, U.K.

Edher Herrera, Department of Physics, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Asuncion

Edher Herrera Graduated in Physics from the National University of Asuncion (UNA), holding a Master's degree in Physics from the State University of Londrina (UEL), and is currently a doctoral student at the Brazilian Center for Physical Research (CBPF).

Jesús Doval-Gandoy, Applied Power Electronics Technology Research Group, University of Vigo

Jesús Doval-Gandoy (M’99) received the M.S. and Ph.D. degrees in electrical engineering from the Polytechnic University of Madrid, Madrid, Spain, and from the University of Vigo, Vigo, Spain, in 1991 and 1999, respectively. He is a Professor and the Head of the Applied Power Electronics Technology Research Group (APET), University of Vigo. His research interests are in the areas of ac power conversion.

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Published

2024-12-16

How to Cite

Rivas-Martínez, G. I., Rodas, J., Herrera, E., & Doval-Gandoy, J. (2024). A Novel Approach to Performance Evaluation of Current Controllers in Power Converters and Electric Drives Using Non-Parametric Analysis. IEEE Latin America Transactions, 23(1), 68–77. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/9139

Issue

Vol. 23 No. 1 (2025): Ordinary Issue

Section

Electronics