Acácio M. R. Amaral was born in Luso, Angola, in 1974. He received the E. E. diploma, the M. S. degree, and the Ph.D. degree from Coimbra's University, Portugal in 1998, 2005, and 2010, respectively. Since 1998, he has been with Coimbra's Polytechnic, where he is currently an Assistant Professor in the Department of Informatics and Systems.

He has research experience in an industrial context at ALSTOM Transport S.A. in France. His research focuses on developing fault diagnosis techniques for electronic systems, utilizing various signal processing methods (SPT) such as DFT, STFT, STLSP, DWT, and EMD, in combination with machine learning algorithms like LinR, DTR, RFR, SVR, KNNR, LogR, DTC, RFC, SVC, KNNC, and autoencoders.

His research has led to his involvement in several R&D projects, including PREMAID and Ef&ReIDC@HomO, where he has made valuable contributions in advancing electronic system diagnosis techniques.

He is the author of five books entitled Circuit and Electronic Devices Analysis (Porto, Portugal, Publindustria, 2013), Digital Systems (Lisboa, Portugal, Edições Sílabo, 2014), Analog Electronics (Lisboa, Portugal, Edições Sílabo, 2017), Digital Electronics (Lisboa, Portugal, Edições Sílabo, 2019), and Applied Electronics (Lisboa, Portugal, Edições Sílabo, 2021).

He is co-author of 57 papers in technical journals and conference proceedings, serving as the first author in more than 75% of them. He is also a co-author of a book entitled Diagnosis and Fault Tolerance of Electrical Machines, Power Electronics and Drives (Stevenage, United Kingdom, Institution of Engineering and Technology, 2018).

He has reviewed over 120 manuscripts for prestigious journals, including IEEE Transactions on Power Electronics, IEEE Transactions on Industrial Electronics, IEEE Sensors Journal, IEEE Access, IET Power Electronics, IET Renewable Power Generation, IET Circuits, Devices and Systems, Engineering Science and Technology: An International Journal, and the Journal of Engineering. He has been recognized with IOP Trusted Reviewer status and has received productivity awards from the Institute of Telecommunications. Additionally, he has reviewed an international project proposal.

He has served as a guest editor for special issues in two Scopus-indexed international journals and participated as a Program Committee member for several international conferences. Currently, he is a member of the editorial boards of the following journals: International Journal of Electrical Components and Energy Conversion, Journal of Electrical and Computational Innovations, Advances in Differential Equations and Control Processes, and IgMin-Research-STEM.

• Machine Learning
• Signal Processing
• Fault Diagnosis
• Power Eletronics
• IoT
• Control and Simulation

• Khaled Laadjal; Acácio M. R. Amaral; João Serra; Antonio J. Marques Cardoso. An Intelligent Framework for Accurate Identification of Open-Circuit Faults in Asymmetrical Six-Phase Induction Motors. 2024 IEEE Energy Conversion Congress and Exposition (ECCE)
• Acácio M. R. Amaral; Khaled Laadjal; Antonio J. Marques Cardoso. Advancements in Fault Diagnosis Techniques for Aluminum Capacitors Using STLSP and Autoencoder. 2024 IEEE International Conference on Artificial Intelligence & Green Energy (ICAIGE)
• Acácio M. R. Amaral; Khaled Laadjal; Antonio J. Marques Cardoso. Assessment of the Integrity of Aluminum Electrolytic Capacitors Using a Logistic Regression Model. 2024 IEEE International Conference on Artificial Intelligence & Green Energy (ICAIGE)
• Acácio M. R. Amaral; Khaled Laadjal; Antonio J. Marques Cardoso. Enhanced DC-link Capacitors Failure Diagnosis for a Three-Phase Interleaved Converter, Using Hilbert Transform. 2024 IEEE 21st International Power Electronics and Motion Control Conference (PEMC)
• Acácio M. R. Amaral; Khaled Laadjal; Antonio J. Marques Cardoso. Assessment of Aluminum Electrolytic Capacitors Health Status Through Signal-Based Techniques. 2024 IEEE 21st International Power Electronics and Motion Control Conference (PEMC)
• Acácio M. R. Amaral; Khaled Laadjal; Antonio J. Marques Cardoso. A New Machine Learning Based Approach for Aluminium Electrolytic Capacitors Health Status Monitoring. IECON 2023- 49th Annual Conference of the IEEE Industrial Electronics Society
• Khaled Laadjal; João Serra; Hugo R. P. Antunes; Acácio M. R. Amaral; Antonio J. Marques Cardoso. Online Stator Fault Diagnostics and Performance Comparison of Stator Winding Configurations in Symmetrical Six-Phase Induction Motors. 2023 IEEE 14th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED)
• Acácio M. R. Amaral; Khaled Laadjal; Antonio J. Marques Cardoso. Decision Tree Regressor-Based Approach for DC-Link Electrolytic Capacitors Health Monitoring. 2023 AEIT International Conference on Electrical and Electronic Technologies for Automotive (AEIT AUTOMOTIVE)
• Acácio M. R. Amaral; Antonio J. Marques Cardoso. Design, Analysis and Simulation of AC-DC Converters with Python. 2021 3rd International Conference on Electronics Representation and Algorithm (ICERA)
• Acacio M. R. Amaral; Antonio J. Marques Cardoso. Regulated Step-Up Power Supplies: Design and Simulation. 2021 18th International Multi-Conference on Systems, Signals & Devices (SSD)
• Khaled Laadjal; Mohamed Sahraoui; M.Y. Hammoudi; A. J. M Cardoso; Acácio M. R. Amaral; Khaled Yahia. Diagnosis of Electrolytic Capacitors in Three-Phase Interleaved Boost Converters Controlled by Mixed Weighted Sensitivity H∞ Design Control. IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
• Khaled Laadjal; Mohamed Sahraoui; Antonio J. Marques Cardoso; Acácio Manuel Raposo Amaral. Online Estimation of Aluminum Electrolytic-Capacitor Parameters Using a Modified Prony's Method. 2018. IEEE Transactions on Industry Applications
• Acácio M. R. Amaral; Antonio J. Marques Cardoso. Unregulated AC-DC power supply under heavy load operation: Simulation and design. 2017 IEEE 26th International Symposium on Industrial Electronics (ISIE)
• Acácio M. R. Amaral; A. J. Marques Cardoso. Estimating aluminum electrolytic capacitors condition using a low frequency transformer together with a DC power supply. 2010 IEEE International Symposium on Industrial Electronics
• Acácio M. R. Amaral; A. J. Marques Cardoso. Simple Experimental Techniques to Characterize Capacitors in a Wide Range of Frequencies and Temperatures. 2010. IEEE Transactions on Instrumentation and Measurement
• Gustavo Malagoni Buiatti; Juan A. Martín-Ramos; Carlos H. Rojas Garcia; Acácio M. R. Amaral; Antonio J. Marques Cardoso. An Online and Noninvasive Technique for the Condition Monitoring of Capacitors in Boost Converters. 2010. IEEE Transactions on Instrumentation and Measurement
• Acácio M. R. Amaral; A. J. Marques Cardoso. State condition estimation of aluminum electrolytic capacitors used on the primary side of ATX power supplies. 2009 35th Annual Conference of IEEE Industrial Electronics
• A. M. R. Amaral; A. J. M. Cardoso. Using input current and output voltage ripple to estimate the output filter condition of switch mode DC/DC converters. 2009 IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives
• Gustavo Malagoni Buiatti; Juan A. MartÍn-Ramos; AcÁcio M. R. Amaral; Piotr Dworakowski; Antonio J. Marques Cardoso. Condition Monitoring of Metallized Polypropylene Film Capacitors in Railway Power Trains. 2009. IEEE Transactions on Instrumentation and Measurement
• Acacio M. R. Amaral; A. J. Marques Cardoso. Using a simple charge-discharge circuit to estimate capacitors equivalent circuit at their operating conditions. 2009 IEEE Instrumentation and Measurement Technology Conference
• AcÁcio Manuel Raposo Amaral; A. J. Marques Cardoso. A Simple Offline Technique for Evaluating the Condition of Aluminum–Electrolytic–Capacitors. 2009. IEEE Transactions on Industrial Electronics
• Acacio M. R. Amaral; A. J. Marques Cardoso. Using a sinosoidal PWM to estimate the ESR of Aluminum electrolytic capacitors. 2009 International Conference on Power Engineering, Energy and Electrical Drives
• Acacio M. R. Amaral; A. J. Marques Cardoso. An automatic technique to obtain the equivalent circuit of aluminum electrolytic capacitors. 2008 34th Annual Conference of IEEE Industrial Electronics
• Acacio M. R. Amaral; A. J. Marques Cardoso. A non-invasive technique for fault diagnosis of SMPS. 2008 IEEE Power Electronics Specialists Conference
• AcÁcio M. R. Amaral; A. J. Marques Cardoso. An Economic Offline Technique for Estimating the Equivalent Circuit of Aluminum Electrolytic Capacitors. 2008. IEEE Transactions on Instrumentation and Measurement
• Acacio M. R. Amaral; A. J. Marques Cardoso. Fault simulation technique for switch mode power supplies. 2007 International Aegean Conference on Electrical Machines and Power Electronics
• Acacio M. R. Amaral; A. J. Marques Cardoso. Using spectral analysis to determine the equivalent circuit of the output filter of DC-DC converters at their operating frequency. 2007 International Aegean Conference on Electrical Machines and Power Electronics
• Acacio M. R. Amaral; Gustavo M. Buatti; Hugo Ribeiro; A.J. Marques Cardoso. Using DFT to Obtain the Equivalent Circuit of Aluminum Electrolytic Capacitors. 2007 7th International Conference on Power Electronics and Drive Systems
• Acacio M. R. Amaral; A. J. Marques Cardoso. Buck Converter Simulation Technique Based on the Fourier Transform. 2007 7th International Conference on Power Electronics and Drive Systems
• Acacio M. R. Amaral; A. J. Marques Cardoso. A switch mode power supply simulation technique based in laplace transform. 2007. INTELEC 07 - 29th International Telecommunications Energy Conference
• Gustavo M. Buiatti; Acacio M. R. Amaral; A. J. Marques Cardoso. An unified method for estimating the parameters of non-isolated DC/DC converters using continuous time models. 2007. INTELEC 07 - 29th International Telecommunications Energy Conference
• Acacio M. R. Amaral; A. J. Marques Cardoso. Using Newton-Raphson Method to Estimate the Condition of Aluminum Electrolytic Capacitors. 2007 IEEE International Symposium on Industrial Electronics
• G. M. Buiatti; A. M. R. Amaral; A. J. M. Cardoso. An Online Technique for Estimating the Parameters of Passive Components in Non-Isolated DC/DC Converters. 2007 IEEE International Symposium on Industrial Electronics
• G. M. Buiatti; A. M. R. Amaral; A.J. C. Cardoso. ESR Estimation Method for DC/DC Converters Through Simplified Regression Models. 2007 IEEE Industry Applications Annual Meeting
• Acacio M. R. Amaral; A. J. Marques Cardoso. An Experimental Technique for Estimating the ESR and Reactance Intrinsic Values of Aluminum Electrolytic Capacitors. 2006 IEEE Instrumentation and Measurement Technology Conference Proceedings
• A.M.R. Amaral; A.J.M. Cardoso. Using a CLC low-pass filter to reduce the consequences of aging in steady-state regime of DC-DC converters. 2005 European Conference on Power Electronics and Applications
• A.M.R. Amaral; A.J. Marques Cardoso. An ESR Meter for High Frequencies. 2005 International Conference on Power Electronics and Drives Systems
• A.M.R. Amaral; A.J.M. Cardoso. An experimental technique for estimating the aluminum electrolytic capacitor equivalent circuit, at high frequencies. 2005 IEEE International Conference on Industrial Technology
• A.M.R. Amaral; A.J.M. Cardoso. Use of ESR to predict failure of output filtering capacitors in boost converters. 2004 IEEE International Symposium on Industrial Electronics

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