Journal Papers

J. F. Guerreiro, T. D. C. Busarello, H. G. Júnior, I. A. Maronni, J. A. O. Filho, H. K. Morales Paredes, J. A. Pomilio, "Self-Stabilization of Grid-Connected Inverters by Means of an Impedance-based Adaptive Controller," in IEEE Open Journal of Industry Applications, 2025, doi: 10.1109/OJIA.2025.3579641

J. S. Gómes, L. G. Marín, H. K. Morales Paredes, et. al., "Fuelling the Transition: A Comprehensive Analysis of Hydrogen Roadmaps in Chile, Brazil and Colombia," in Renewable and Sustainable Energy Reviews, 2025, doi: https://doi.org/10.1016/j.rser.2025.115885

E. F. R. Oliverira, R. Santos, M. G. Simões and H. K. Morales Paredes, "Estimation of the Double-Cage Model for Three-Phase Induction Machines Using Decision Tree-Based Algorithms," in IEEE Open Journal of the Industrial Electronics Society, 2025, doi: 10.1109/OJIES.2025.3572372

J. d. A. O. Filho, G. L. Bressanini, P. F. Silva, L. D. O. Arenas, T. D. C. Busarello and H. K. Morales Paredes, "Active Damping of LCL-Resonance in Grid-Connected Inverters through Capacitor Voltage Feedback and the Parks-McClellan Algorithm," in IEEE Journal of Emerging and Selected Topics in Power Electronics, 2025, doi: 10.1109/JESTPE.2025.3542567

F. L. Paes, L. C. Souza, A. M. S. Alonso, H. K. Morales Paredes, F. A. S. Gonçalves, L. De O. Arenas, F. P. Marafão, “Contribuições ao Sistema de Gerenciamento de Potência em Plataformas FPSO através do Controle Coordenado de Conversores Multifuncionais”, Eletrônica de Potência, vol. 30, p. e202514, Feb. 2025, doi: https://doi.org/10.18618/REP.e202514

B. O. Zarpellon, L. de Oro Arenas, E. Paciência Godoy, F. Pinhabel Marafão and H. K. Morales Paredes, "Design and Implementation of a Smart Campus Flexible Internet of Things Architecture on a Brazilian University," in IEEE Access, vol. 12, pp. 113705-113725, 2024, DOI: 10.1109/ACCESS.2024.3444471.

J. C. Cebrian, J. Giacomini, A. L. D. Rossi, F. C. L. Trindade and Helmo K. Morales Paredes, "Methodology to Estimate the Financial Impacts of the Integration of PV Generators in Distribution Systems on Voltage Sags and Energy Losses," in IEEE Transactions on Power Delivery, vol. 39, no. 2, pp. 1233-1246, April 2024. DOI: 10.1109/TPWRD.2024.3358999.

Augusto M. dos Santos, Luis O. Arenas, Jakson P. Bonaldo, José O. Filho, Fernando P. Marafão, Helmo K. Morales Paredes, "Power Quality Improvement in Commercial and Industrial Sites: An Integrated Approach Mitigating Power Oscillations", in IEEE Access, vol. 12, pp. 50872-50884, 2024, DOI: 10.1109/ACCESS.2024.3385991.

M. B. Arcadepani, A. C. Moreira and H. K. Morales-Paredes, “Non-Invasive Approach to Harmonic Responsibility Assignment Based on Conservative Power Theory" IEEE Transactions on Power Delivery, 2024. DOI: 10.1109/TPWRD.2024.3451791

Manuel M. Gomes, Claudio D. B. Mellano, Helmo K. Morales Paredes, Juan Gómez, Anant K. Verma, Jakson P. Bonaldo, "Distributed Control Scheme for Clusters of Power Quality Compensators in Grid-tied AC Microgrids," in Sustainbility, 2023, 15 (22), 15698 doi: https://doi.org/10.3390/su152215698 

Helmo K. Morales Paredes, Matheus B. Arcadepani, Alexandre C. Moreira, Flávio A. S. Gonçalves, Fernando P. Marafão "Enlightening Load Modeling by Means of Power Factor Decompositions," in Energies 2023, 16, 4089 doi: https://doi.org/10.3390/en16104089 

J. C. Cebrian, J. Giacomini, C. A. Carneiro, G. B. Silva and Helmo K. Morales Paredes, "A Novel Methodology to Estimate Probability Density Function of Voltage Sag Duration And Failure Rates on Power Distribution Systems," in IEEE Access, doi: 10.1109/ACCESS.2023.3243552

Bruna R. P. Conrado, Wesley A. Souza, Eduardo V. Liberado, Helmo K. Morales Paredes, Danilo I. Brandão Alexandre C. Moreira, "Towards Technical and Economic Feasibility of Power Quality Compensators," in Electric Power Research. vol. 216, 2023. https://doi.org/10.1016/j.epsr.2022.109020.

D. T. Rodrigues, H. K. Morales Paredes, C. Burgos-Mellado, R. L. Lima and J. P. Bonaldo, "Consensus-Based Single-Phase Control of Three-Phase Inverter for Current Sharing in Three-Phase Four-Wire Isolated AC Microgrids," in IEEE Access, 2022, doi: 10.1109/ACCESS.2022.3213673.

Augusto M. S. Alonso, João H. Oliveira, Danilo I. Brandao, Jakson P. Bonaldo, Helmo K. Morales-Paredes, Fernando P. Marafão, "CPT-Based Control Strategy for a Two-Phase Three-Wire PV Inverter: A Multifunctional Perspective and a Comprehensive Review" in Brazilian Journal of Power Electronics, vol. 27, no. 2, pp. 117-128, Abr./Jun., 2022. http://dx.doi.org/10.18618/REP.2022.2.0052

H. K. Morales-Paredes, D. T. Rodrigues, C. Burgos-Mellado and J. P. Bonaldo, "Enhanced Control Strategy Based on Virtual Impedance Loops to Achieve the Sharing of Imbalance and Harmonic in 3-Phase 4-Wire Isolated Microgrids," in IEEE Transactions on Power Delivery, vol. 37, no. 4, pp. 3412-3415, Aug. 2022, doi: 10.1109/TPWRD.2022.3154706. DOI: 10.1109/TPWRD.2022.3154706. 

M. B. Arcadepani, D. T. Rodrigues, A. C. Moreira, J. P. Bonaldo, H. J. Guillardi and H. K. Morales-Paredes, "Conservative Power Theory for Harmonic Voltage Responsibility Assignment" in IEEE Latin America Transactions, vol. 20. no. 3 pp. 443-450, March 2022, DOI: 10.1109/TLA.2022.9667142.

J. P. Bonaldo, V. A. De Souza, A. M. Dos Santos Alonso, L. D. O. Arenas, F. P. Marafão and H. K. Morales-Paredes, "Adaptive Power Factor Regulation Under Asymmetrical and Non-sinusoidal Grid Condition with Distributed Energy Resource," IEEE Access, vol. 9, pp. 140487 - 140503, 2021, DOI: 10.1109/ACCESS.2021.3119335.

H. K. Morales-Paredes, D. T. Rodrigues, J. C. Cebrian and J. P. Bonaldo, “CPT-Based Multi-Objective Strategy for Power Quality Enhancement in Three-Phase Three-Wire Systems Under Distorted and Unbalanced Voltage Conditions,” IEEE Access, vol. 9, pp. 53078-53095, 2021, DOI: 10.1109/ACCESS.2021.3069832

M. P. de Santana, G. Teixeira de Paula, C. M. Rodrigues de Oliveira, F. de Almeida Borges, H. K. Morales-Paredes and J. R. B. de Almeida Monteiro, "Vector Control Applied to Mitigate the Electromagnetic Torque Ripple in Doubly Fed Induction Generator," IEEE Transactions on Energy Conversion, vol. 36, no. 04, pp. 2977-2986, 2021. DOI: 10.1109/TEC.2021.3075933

D. G. T. da Silva, H. J. B. da Silva, F. P. Marafão, H. K. Morales-Paredes, F. A. S. Gonçalves, “Enhanced health index for power transformers diagnosis”, Engineering Failure Analysis, vol. pp. 105427 2021. DOI: https://doi.org/10.1016/j.engfailanal.2021.105427

J. P. Bonaldo, J. d. A. Olímpio Filho, A. M. dos Santos Alonso, F. Pinhabel Marafão and H. K. Morales-Paredes, "Modeling and Control of a Single-Phase Grid-Connected Inverter with LCL Filter," IEEE Latin America Transactions, vol. 19, no. 02, pp. 250-259, 2021, DOI: 10.1109/TLA.2021.9443067

J. P. Bonaldo, F. L. Tofoli, R. V. A. Monteiro, H. K. Morales-Paredes, “Comparative analysis of techniques for the limitation of compensation currents in multifunctional grid-tied inverters”, International Journal of Electrical Power & Energy Systems, vol. 126, pp. 106574, 2021. DOI: https://doi.org/10.1016/J.IJEPES.2020.106574 

J. A. O. Filho, H. K. Morales-Paredes, J. P. Bonaldo, A. M. S. Alonso, F. P. Marafão, M.G. Simões, “Compensation of Oscillating Instantaneous Power in Modern Microgrids Based on the Conservative Power Theory”, Brazilian Journal of Power Electronics, vol. 25, no. 3, pp. 261-271, 2020. DOI: http://dx.doi.org/10.18618/REP.2020.3.0017

A. C. Moreira, W. A. Souza, B. R. P. Conrado, H. K. Morales-Paredes, “Disturbing Load Classification Based on the Grey Relational Analysis Method and Load Performance Index”. Journal of Control, Automation and Electrical Systems, vol. 31, pp. 141-152, 2020. DOI: https://doi.org/10.1007/s40313-019-00511-9

O. V. S. R. Varaprasad, D. V. S. S. Sarma, H. K. Morales-Paredes, M. G. Simões “Enhanced Dual-Spectrum Line Interpolated FFT with Four-Term Minimal Sidelobe Cosine Window for Real-Time Harmonic Estimation in Synchrophasor Smart-Grid Technology”, Electronics, vol. 8, no. 2, 2019. DOI: https://doi.org/10.3390/electronics8020191

Y. Perdana, S. M. Muyeen, A. Al-Durra, H. K. Morales-Paredes, M. G. Simões, “Direct Connection of Supercapacitor-Battery Hybrid Storage System to the Grid-tied Photovoltaic System”. IEEE Transactions Sustainable Energy, 2018. DOI: 10.1109/TSTE.2018.2868073

T. D. C. Busarello, A. Mortezaei, H. K. Morales-Paredes, A. Al-durra, J. A. Pomilio, M. G. Simões, “Simplified Small-Signal Model for Output Voltage Control of Asymmetric Cascaded H-Bridge Multilevel Inverter”. IEEE Transactions on Power Electronics, vol. 33, pp. 3509-3519, 2018. DOI: 10.1109/TPEL.2017.2704919

A. C. Moreira, L. C. P. da Silva, H. K. Morales-Paredes, “Power Quality Study and Analysis of Different Arc Welding Machines”. Journal of Control, Automation and Electrical Systems, vol. 29, pp. 163-176, 2018. DOI: 10.1007/s40313-017-0363-6

H. K. Morales-Paredes, J. P. Bonaldo, J. A. Pomilio, “Control Center Implementation for Synergistic Operation of Distributed Multifunctional Single-Phase Grid-Tie Inverters in a Microgrid”. IEEE Transactions on Industrial Electronics, vol. 65, pp. 8018-8029, 2018. DOI: 10.1109/TIE.2018.2801780

T. D. Busarello, H. K. Morales-Paredes, J. A. Pomilio, M. G. Simões, “Synergistic Operation Between Battery Energy Storage and Photovoltaic Generator Systems to Assist Management of Microgrids. IET Generation Transmission & Distribution, vol. 12, pp. 2944-2951, 2018. DOI: 10.1049/iet-gtd.2018.0314

A. C. Moreira, H. K. Morales-Paredes, W. A. Souza, P, H. J. Nardelli, F. P. Marafão, L. C. P. da Silva “Evaluation of Pattern Recognition Algorithms for Applications on Power Factor Compensation”. Journal of Control, Automation and Electrical Systems, vol. 29, pp. 75-90, 2018. DOI: 10.1007/s40313-017-0352-9

F. P. Marafão, A. A. M dos Santos, F. A. S. Gonçalves, D. I. Brandão, A. C. G. Martins, H. K. Morales-Paredes, “Trends and Constraints on Brazilian Photovoltaic Industry: Energy Policies, Interconnection Codes and Equipment Certification”. IEEE Transactions on Industry Applications, vol. 54, pp. 4017-4027, 2018. DOI: 0.1109/TIA.2018.2833422

A. C. Moreira, H. K. Morales-Paredes, W. A. Souza, F. P. Marafão, L. C. P. da Silva “Intelligent Expert System for Power Quality Improvement Under Distorted and Unbalanced Conditions in Three-Phase AC Microgrids”. IEEE Transactions on Smart Grid, vol. 9, pp. 6951-6960, 2018. DOI: 10.1109/TSG.2017.2771146

H. K. Morales-Paredes, P. H. F. Reis, S. M. Deckmann, “Linear and Non-linear Load Characterization Under Non-Sinusoidal Conditions. Brazilian Journal of Power Electronics, vol. 22, pp 50-62, 2017. http://dx.doi.org/10.18618/REP.2017.1.2647

C. B. Mellado, C Hernandez, R. C. Dobson, D. Saez, M. Sumner, A. Costabeber, H. K. Morales-Paredes, “Experimental Evaluation of a CPT-Based 4-leg Active Power Compensator for Distributed Generation”, IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 5, pp. 747-759, 2017. DOI: 10.1109/JESTPE.2016.2633064

J. P. Bonaldo, H. K. Morales-Paredes, J. A. Pomilio, “Control of Single-Phase Power Converters Connected to Low Voltage Distorted Power Systems with Variable Compensation Objectives”, IEEE Transactions on Power Electronics, vol. 31, pp. 2039-2052, 2016. DOI: 10.1109/TPEL.2015.2440211

D. I. Brandão, H. K. Morales-Paredes, H. G. Júnior, F. P. Marafão, J. A. Pomilio “Optimized Compensation of Unwanted Current Terms by AC Power Converters under Generic Voltage Conditions”, IEEE Transactions on Industrial Electronics, vol. 63, pp. 7743-7753, 2016. DOI: 10.1109/TIE.2016.2594226

J. P. Bonaldo, H. K. Morales-Paredes, J. A. Pomilio. “Multifunctional Current Reference Generation Strategy for Grid-tied Power Electronic Converter”, Przeglad Elektrotechniczny, vol. 2015, pp. 142-148, 2015. doi.org/10.15199/48.2015.03.34

A. C. Moreira, S. M. Deckmann, F. P. Marafão, L. C. P. da Silva, H. K. Morales-Paredes, “Decision Tree Based Expert System for Power Factor Improvement Under Distorted and Unbalanced Current Conditions” Przeglad Elektrotechniczny, vol. 91, pp. 109-114, 2015. doi:10.15199/48.2015.11.29 (Invited paper)

A. C. Moreira, L. C. P. da Silva, H. K. Morales-Paredes, “Applying Conservative Power Theory for Analyzing Three-Phase X-Ray Machine Impact on Distribution Systems”, Electric Power Systems Research, vol. 129, pp. 114-125, 2015. doi.org/10.1016/j.epsr.2015.07.019

B. A. Junior, F. A. S. Gonçalves, H. K. Morales-Paredes, F. P. Marafão “Characterization of Three-Phase Induction Motor Using Conservative Power Theory (CPT)” WSEAS Transactions on Circuits, vol. 14, pp. 357-364, 2015. http://www.wseas.org/multimedia/journals/circuits/2015/a785801-497.pdf

J. P. Bonaldo, H. K. Morales-Paredes, J. A. Pomilio “Strategy for Dynamic Saturation of the Capacity of Multifunctional Power Converters Connected to Utility Grid” Brazilian Journal of Power Electronics, vol. 20, pp. 354-363, 2015. doi.org/10.18618/REP.2015.4.2550

D. I. Brandão, H. K. Morales-Paredes, A. Costabeber, F. P. Marafão, “Flexible Active Compensation Based on Load Conformity Factors Applied to Non-Sinusoidal and Asymmetrical Voltage Conditions”, IET Power Electronics, vol. pp. 1-9, 2015. DOI: 10.1049/iet-pel.2015.0086

F. P. Marafão, D. I. Brandão, A. Costabeber, H. K. Morales-Paredes, “Multi-task control strategy for grid-tied inverters based on Conservative Power Theory” IET Renewable Power Generation, vol. 9, pp. 154-165, 2015. DOI: 10.1049/iet-rpg.2014.0065

J. P. Bonaldo, H. K. Morales-Paredes, J. A. Pomilio, “Flexible Control for Single-phase Converter on Distribution Low Voltages Power Systems”, Brazilian Journal of Power Electronics, vol. 19, pp. 354-367, 2014. http://dx.doi.org/10.18618/REP.2014.4.354367

F. P. Marafão, D. I. Brandão, F. A. S. Gonçalves, H. K. Morales-Paredes, “Decoupled Reference Generator for Shunt Active Filters Using the Conservative Power Theory”. Journal of Control, Automation and Electrical Systems, vol. 24, p. 522-534, 2013. DOI: 10.1007/s40313-013-0043-0

W. A. Souza, E. V. Liberado, L. C. P. da Silva, F. P. Marafão, H. K. Morales-Paredes, “Load Analyser using Conservative Power Theory” Przeglad Elektrotechniczny, vol. 89, pp. 1-6, 2013. http://pe.org.pl/articles/2013/12/1.pdf (Invited paper)

E. V. Liberado, W. A. Souza, J. A. Pomilio, H. K. Morales-Paredes, F. P. Marafão, “Design of Static VAr Compensator using a General Reactive Energy Definition” Przeglad Elektrotechniczny, vol. 89, pp. 233-238, 2013. http://pe.org.pl/articles/2013/11/54.pdf (Invited paper)

P. Tenti, A. Costabeber, P. Mattabelli, F. P. Marafão, H. K. Morales-Paredes, “Load Characterization and Revenue Metering Under Non-Sinusoidal and Asymmetrical Operation”. IEEE Transactions on Instrumentation and Measurement, vol. 63, pp. 422 – 431, 2013. DOI: 10.1109/TIM.2013.2280480

H. K. Morales-Paredes, D. I. Brandão, E. V. Liberado F. P. Marafão, “Shunt Active Compensation Based on the Conservative Power Theory”. Brazilian Journal of Power Electronics, vol. 17, pp. 409-418, 2012. http://dx.doi.org/10.18618/REP.2012.1.409418

F. P. Marafão, E. V. Liberado, H. K. Morales-Paredes, L. C. P. da Silva, “Three-Phase Four-Wire Circuits Interpretation by means of Different Power Theories”, Przeglad Elektrotechniczny, vol. 87, pp. 28-33, 2011. http://pe.org.pl/articles/2011/1/6.pdf (Invited paper)

H. K. Morales-Paredes, L.C. P. da Silva, D. I. Brandão F. P. Marafão, “Possible Shunt Compensation Strategies Based on Conservative Power Theory”, Przeglad Elektrotechniczny, vol. 87, pp. 34-39, 2011. http://pe.org.pl/articles/2011/1/7.pdf

H. K. Morales-Paredes, A. Costabeber, P. Tenti, “Application of Conservative Power Theory to Cooperative Control of Distributed Compensators in Smart Grids”, Przeglad Elektrotechniczny, vol. 87, pp. 1-7, 2011. http://pe.org.pl/articles/2011/1/1.pdf (Invited paper)

P. Tenti, H. K. Morales-Paredes, P. Mattavelli, “Conservative Power Theory, a Framework to Approach Control and Accountability Issues in Smart Microgrids”, IEEE Transactions on Power Electronics, vol. 26, pp.664-673, 2011. DOI: 10.1109/TPEL.2010.2093153 (Prize paper award)

P. Tenti, P. Mattavelli, H. K. Morales-Paredes, F. P. Marafão, “Accountability in Smart Microgrids Based on Conservative Power Theory”, IEEE Transactions on Instrumentation and Measurement, vol. 60, pp. 3058-30-69, 2011. DOI: 10.1109/TIM.2011.2162351

P. Tenti, P. Mattavelli, H. K. Morales-Paredes, “Conservative Power Theory, Sequence Components and Accountability in Smart Grids”, Przeglad Elektrotechniczny, vol. 6, pp. 30-37, 2010. (Invited paper)

F. P. Marafão, H. K. Morales-Paredes, L. C. P. da Silva, “Critical Evaluation of FBF, pq and CPT Current Decompositions for Four-wire Circuits”, Brazilian Journal of Power Electronics, vol. 14, pp. 277-286, 2009. http://dx.doi.org/10.18618/REP.2009.4.277286

F. P. Marafão, S. M. Deckmann, H. K. Morales-Paredes, “The Influence of Voltage Referential in Power Quality Indices Evaluation”, IEEE Latin America Transactions, vol. 6, pp. 81-88, 2008. DOI: 10.1109/TLA.2008.4461636