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Matrix converter based compensator for unbalance mitigation in traction system (2024)
Presentation / Conference Contribution
Kurati, J. S., Mir, T. N., Wheeler, P. W., & Rivera, M. (2024, June). Matrix converter based compensator for unbalance mitigation in traction system. Presented at 13th International Conference on Power Electronics, Machines and Drives (PEMD 2024), Nottingham, UK

Modern AC Electric trains are designed as single-phase loads and are operated on the three-phase utility grid which causes load asymmetry and leads to unbalanced current flow in the three-phase grid. Several traction unbalance compensators have been... Read More about Matrix converter based compensator for unbalance mitigation in traction system.

Current source rectifier for high-power water electrolysers: analysis and sizing (2024)
Presentation / Conference Contribution
Iribarren, Á., Barrios, E. L., Balda, J., Rivera, M., Wheeler, P., Ursúa, A., & Sanchis, P. (2024, June). Current source rectifier for high-power water electrolysers: analysis and sizing. Presented at IET Conference Proceedings, Nottingham, England

Current source rectifiers offer advantageous features that make them attractive solutions for powering grid-connected high-power electrolysers. Being a single-stage step-down rectifier topology is particularly well-suited for the low voltage, high cu... Read More about Current source rectifier for high-power water electrolysers: analysis and sizing.

A novel higher-order sliding mode control for DC-DC boost converter system in PMDC motor exploring mismatched disturbances (2024)
Journal Article
R, D., Srinivasan, G. K., & Rivera, M. (2024). A novel higher-order sliding mode control for DC-DC boost converter system in PMDC motor exploring mismatched disturbances. Circuit World, 50(2/3), 348-364. https://doi.org/10.1108/CW-06-2023-0144

Purpose: The purpose of this study is to stabilize the rotating speed of the permanent magnet direct current (PMDC) motor driven by a DC-DC boost converter under mismatched disturbances (i.e.) under varying load circumstances like constant, frictiona... Read More about A novel higher-order sliding mode control for DC-DC boost converter system in PMDC motor exploring mismatched disturbances.

Model Predictive Control of a Modular Multilevel Converter with Reduced Computational Burden (2024)
Journal Article
Kadhum, H., Watson, A. J., Rivera, M., Zanchetta, P., & Wheeler, P. (2024). Model Predictive Control of a Modular Multilevel Converter with Reduced Computational Burden. Energies, 17(11), Article 2519. https://doi.org/10.3390/en17112519

Recent advances in high-power applications employing voltage source converters have been primarily fuelled by the emergence of the modular multilevel converter (MMC) and its derivatives. Model predictive control (MPC) has emerged as an effective way... Read More about Model Predictive Control of a Modular Multilevel Converter with Reduced Computational Burden.

Performance Enhancement of Reduced Component Multilevel Inverter with Optimal Placement of Level Shifter (2024)
Journal Article
L, V., Kumar S, G., Rivera, M., & Babaei, E. (2024). Performance Enhancement of Reduced Component Multilevel Inverter with Optimal Placement of Level Shifter. IEEE Latin America Transactions, 22(6), 502-511. https://doi.org/10.1109/TLA.2024.10534310

Multi-Level Inverter (MLI) with and without cross-connecting switches is constructed using bi-directional and uni-directional switches and their performances are verified via a real-time experimentation. Here, a cross connecting switch inverter (CCSI... Read More about Performance Enhancement of Reduced Component Multilevel Inverter with Optimal Placement of Level Shifter.

PLECS Implementation of a Predictive Control Strategy for a Multi- Drive System based on an Indirect Matrix Converter (2024)
Presentation / Conference Contribution
Hamid, A., Rivera, M., Wheeler, P., Muñoz, J., Toledo, S., Espinoza, J., & Zerdali, E. (2024, March). PLECS Implementation of a Predictive Control Strategy for a Multi- Drive System based on an Indirect Matrix Converter. Presented at 2024 IEEE International Conference on Industrial Technology (ICIT), Bristol, United Kingdom

This paper proposes a PLECS implementation of a predictive torque and flux control strategy for a multi-drive system composed of two induction machines and a six-leg indirect matrix converter. Simultaneously, the instantaneous power factor of the gri... Read More about PLECS Implementation of a Predictive Control Strategy for a Multi- Drive System based on an Indirect Matrix Converter.

Electricity Generation under the Climate Change Situation in Latin America: Trends and Challenges (2024)
Journal Article
Undurraga, J. P., Rivera, M., Cossutta, P., Garcés, A., Ayala, M., García, L. Y., & Wheeler, P. (2024). Electricity Generation under the Climate Change Situation in Latin America: Trends and Challenges. International Journal of Energy Economics and Policy, 14(2), 535-545. https://doi.org/10.32479/ijeep.15226

In a scenario of energy inequality, countries require stability for development and quality of life for their inhabitants. This paper addresses the reality of access to electrical energy and the effect of climate change on the potential of renewables... Read More about Electricity Generation under the Climate Change Situation in Latin America: Trends and Challenges.

Extended Horizon Predictive Control for Software Defined Networked Microgrids (2024)
Preprint / Working Paper
Pérez Guzmán, R., Rivera, M., Araya, B., Gόmez, J. S., Salgueiro, Y., Restrepo, C., Wheeler, P., You, M., & Sumner, M. (2024). Extended Horizon Predictive Control for Software Defined Networked Microgrids

This paper presents a model-based predictive control implementation (FCS-MPC) with extended horizon prediction to address the resiliency problem and voltage/frequency deviations for hierarchical microgrids. The proposed framework integrates Software-... Read More about Extended Horizon Predictive Control for Software Defined Networked Microgrids.

A Review on Weighting Factor Design of Finite Control Set Model Predictive Control Strategies for AC Electric Drives (2024)
Journal Article
Zerdali, E., Rivera, M., & Wheeler, P. (2024). A Review on Weighting Factor Design of Finite Control Set Model Predictive Control Strategies for AC Electric Drives. IEEE Transactions on Power Electronics, 39(8), 9967-9981. https://doi.org/10.1109/tpel.2024.3370550

Model predictive control has been widely applied to AC electric drives over the last decade. Despite the proposed solutions, researchers are still seeking to find more effective solutions for weighting factor design, parameter dependency, current/tor... Read More about A Review on Weighting Factor Design of Finite Control Set Model Predictive Control Strategies for AC Electric Drives.

A metaheuristic-based method for photovoltaic temperature computation under tropical conditions (2024)
Journal Article
Osorio, L., Moreno, M., Rivera, M., Tuninetti, V., Ruíz Chavarria, G., Duchêne, L., & Wheeler, P. (2024). A metaheuristic-based method for photovoltaic temperature computation under tropical conditions. Solar Energy, 271, Article 112414. https://doi.org/10.1016/j.solener.2024.112414

Tropical climates have favorable irradiation levels for the development of photovoltaic systems; however, high temperatures have a negative impact on the efficiency of solar cells. Since direct measurement of cell temperature is not common, mathemati... Read More about A metaheuristic-based method for photovoltaic temperature computation under tropical conditions.

An Optimal Switching Sequence Model Predictive Control Scheme for the 3L-NPC with Output LC Filter (2024)
Journal Article
Herrera, F., Mora, A., Cárdenas, R., Díaz, M., Rodríguez, J., & Rivera, M. (2024). An Optimal Switching Sequence Model Predictive Control Scheme for the 3L-NPC with Output LC Filter. Processes, 12(2), Article 348. https://doi.org/10.3390/pr12020348

In some applications of microgrids and distributed generation, it is necessary to feed islanded or stand-alone loads with high-quality voltage to provide low total harmonic distortion (THD). To fulfil these demands, an 𝐿𝐶 filter is usuallyconnected t... Read More about An Optimal Switching Sequence Model Predictive Control Scheme for the 3L-NPC with Output LC Filter.

An Optimal Switching Sequence Model Predictive Control Scheme for the 3L-NPC Converter with Output LC Filter (2024)
Journal Article
Herrera, F., Mora, A., Cárdenas, R., Díaz, M., Rodríguez, J., & Rivera, M. (2024). An Optimal Switching Sequence Model Predictive Control Scheme for the 3L-NPC Converter with Output LC Filter. Processes, 12(2), Article 348. https://doi.org/10.3390/pr12020348

In some applications of microgrids and distributed generation, it is necessary to feed islanded or stand-alone loads with high-quality voltage to provide low total harmonic distortion (THD). To fulfil these demands, an LC filter is usuallyconnected t... Read More about An Optimal Switching Sequence Model Predictive Control Scheme for the 3L-NPC Converter with Output LC Filter.

Improved Feedback Quantizer with Discrete Space Vector (2024)
Journal Article
Veillon, M., Espinosa, E., Melin, P., Mirzaeva, G., Rivera, M., Baier, C. R., & Ramirez, R. O. (2024). Improved Feedback Quantizer with Discrete Space Vector. Sensors, 24(1), Article 287. https://doi.org/10.3390/s24010287

The use of advanced modulation and control schemes for power converters, such as a Feedback Quantizer and Predictive Control, is widely studied in the literature. This work focuses on improving the closed-loop modulation scheme called Feedback Quanti... Read More about Improved Feedback Quantizer with Discrete Space Vector.

A Smart Crop Water Stress Index-Based IoT Solution for Precision Irrigation of Wine Grape (2023)
Journal Article
Fuentes-Peñailillo, F., Ortega-Farías, S., Acevedo-Opazo, C., Rivera, M., & Araya-Alman, M. (2024). A Smart Crop Water Stress Index-Based IoT Solution for Precision Irrigation of Wine Grape. Sensors, 24(1), Article 25. https://doi.org/10.3390/s24010025

The Scholander-type pressure chamber to measure midday stem water potential (MSWP) has been widely used to schedule irrigation in commercial vineyards. However, the limited number of sites that can be evaluated using the pressure chamber makes it dif... Read More about A Smart Crop Water Stress Index-Based IoT Solution for Precision Irrigation of Wine Grape.

Lyapunov-Function Based Control Approach for Single-Phase Split Source Inverter (2023)
Presentation / Conference Contribution
Bagheri, F., Guler, N., Rivera, M., & Wheeler, P. (2023, November). Lyapunov-Function Based Control Approach for Single-Phase Split Source Inverter. Presented at 2023 IEEE 8th Southern Power Electronics Conference and 17th Brazilian Power Electronics Conference (SPEC/COBEP), Florianopolis, Brazil

The single-phase split source inverter (SSI), operating as an inverter while boosting the input dc voltage, is a single-stage topology. This paper introduces a novel control strategy utilizing a Lyapunov-function controller for a SSI. The proposed Ly... Read More about Lyapunov-Function Based Control Approach for Single-Phase Split Source Inverter.

Predictive Direct Speed Control of PMSM without Weighting Factors (2023)
Presentation / Conference Contribution
Zerdali, E., Rivera, M., Wheeler, P., & Toledo, S. (2023, November). Predictive Direct Speed Control of PMSM without Weighting Factors. Presented at COBEP 2023 - 17th Brazilian Power Electronics Conference and SPEC 2023 - 8th IEEE Southern Power Electronics Conference, Florianopolis, Brazil

Predictive direct speed control (PDSC) of electric drives eliminates the cascade control structure and provides faster speed and current/torque response, but suffers from the selection of weighting factors (WFs). This paper proposes a PDSC strategy w... Read More about Predictive Direct Speed Control of PMSM without Weighting Factors.

A Combination of a Feed-Forward and Selective Harmonic Elimination Method for Mitigation of Voltage Distortions in Single-Phase Stand-Alone Inverters Operating with Non-Linear Loads (2023)
Presentation / Conference Contribution
Golkhandan, N. H., Rivera, M., Wheeler, P., Acuna, P., Rothen, J., & Davoudi, A. (2023, November). A Combination of a Feed-Forward and Selective Harmonic Elimination Method for Mitigation of Voltage Distortions in Single-Phase Stand-Alone Inverters Operating with Non-Linear Loads. Presented at COBEP 2023 - 17th Brazilian Power Electronics Conference and SPEC 2023 - 8th IEEE Southern Power Electronics Conference, Proceedings, Florianopolis, Brazil

This paper presents a new method for voltage distortion elimination in single-phase stand-alone inverters. In fact, the cooperation of a selective harmonic elimination approach with a feed-forward method eliminates the harmonics more effectively. In... Read More about A Combination of a Feed-Forward and Selective Harmonic Elimination Method for Mitigation of Voltage Distortions in Single-Phase Stand-Alone Inverters Operating with Non-Linear Loads.

Speed-Sensorless Predictive Direct Speed Control for PMSM Drives (2023)
Presentation / Conference Contribution
Zerdali, E., Rivera, M., Wheeler, P., & Toledo, S. (2023, November). Speed-Sensorless Predictive Direct Speed Control for PMSM Drives. Presented at COBEP 2023 - 17th Brazilian Power Electronics Conference and SPEC 2023 - 8th IEEE Southern Power Electronics Conference, Proceedings, Florianopolis, Brazil

Predictive direct speed control (PDSC) of electric motors makes the control of both electrical and mechanical systems possible over a single control law by eliminating the cascade control structure. Speed-sensorless control also reduces the cost of e... Read More about Speed-Sensorless Predictive Direct Speed Control for PMSM Drives.

Enhanced Dual–Vector Model Predictive Control for PMSM Drives Using the Optimal Vector Selection Principle (2023)
Journal Article
Huang, Z., Wei, Q., Xiao, X., Xia, Y., Rivera, M., & Wheeler, P. (2023). Enhanced Dual–Vector Model Predictive Control for PMSM Drives Using the Optimal Vector Selection Principle. Energies, 16(22), Article 7482. https://doi.org/10.3390/en16227482

The Dual–Vector model predictive control (DV–MPC) method can improve the steady–state control performance of motor drives compared to using the single–vector method in one switching cycle. However, this performance enhancement generally increases the... Read More about Enhanced Dual–Vector Model Predictive Control for PMSM Drives Using the Optimal Vector Selection Principle.