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Computation of time probability distributions for the occurrence of uncertain future events (2020)
Journal Article
Acuña-Ureta, D. E., Orchard, M. E., & Wheeler, P. (2021). Computation of time probability distributions for the occurrence of uncertain future events. Mechanical Systems and Signal Processing, 150, Article 107332. https://doi.org/10.1016/j.ymssp.2020.107332

The determination of the time at which an event may take place in the future is a well-studied problem in a number of science and engineering disciplines. Indeed, for more than fifty years, researchers have tried to establish adequate methods to char... Read More about Computation of time probability distributions for the occurrence of uncertain future events.

An Overview of Applications of the Modular Multilevel Matrix Converter (2020)
Journal Article
Diaz, M., Cárdenas Dobson, R., Ibaceta, E., Mora, A., Urrutia, M., Espinoza, M., …Wheeler, P. (2020). An Overview of Applications of the Modular Multilevel Matrix Converter. Energies, 13(21), Article 5546. https://doi.org/10.3390/en13215546

The modular multilevel matrix converter is a relatively new power converter topology suitable for high-power alternating current (AC)-to-AC applications. Several publications in the literature have highlighted the converter capabilities, such as full... Read More about An Overview of Applications of the Modular Multilevel Matrix Converter.

Speed-Sensorless Finite Control Set Model Predictive Control of PMSM with Permanent Magnet Flux Linkage Estimation (2020)
Presentation / Conference Contribution
Zerdali, E., & Wheeler, P. (2020). Speed-Sensorless Finite Control Set Model Predictive Control of PMSM with Permanent Magnet Flux Linkage Estimation. In 2020 2nd Global Power, Energy and Communication Conference (GPECOM) (114-119). https://doi.org/10.1109/GPECOM49333.2020.9247943

Permanent magnet synchronous motors (PMSMs) have become the focus of interest in electrical machine drive systems due to their advantages. These motors can have a nonlinear model with time-varying parameters, making them difficult to control. Therefo... Read More about Speed-Sensorless Finite Control Set Model Predictive Control of PMSM with Permanent Magnet Flux Linkage Estimation.

Finite Control Set Model Predictive Control of Isolated DC/DC Modular Multilevel Converter (2020)
Presentation / Conference Contribution
Akbar, S. M., Hasan, A., Watson, A., Wheeler, P., & Odhano, S. (2020). Finite Control Set Model Predictive Control of Isolated DC/DC Modular Multilevel Converter. . https://doi.org/10.1109/IECON43393.2020.9254434

© 2020 IEEE. Isolated DC/DC modular multilevel converters (MMC) consisting of two MMCs isolated by a transformer are one of the converter topologies being considered used for DC/DC conversion in HVDC transmission. Two level modulation can be used to... Read More about Finite Control Set Model Predictive Control of Isolated DC/DC Modular Multilevel Converter.

Multiphase fault tolerant distributed control techniques for integrated drives based on resonant regulators (2020)
Presentation / Conference Contribution
Savi, F., Barater, D., Buticchi, G., Wheeler, P., & Gerada, C. (2020). Multiphase fault tolerant distributed control techniques for integrated drives based on resonant regulators. . https://doi.org/10.1109/iecon43393.2020.9254985

One of the challenges brought forward by the gradual electrification undertaken by the aviation sector is the requirement of fault tolerance for machine drive systems to be used for critical on-board tasks such as propulsion or primary flight surface... Read More about Multiphase fault tolerant distributed control techniques for integrated drives based on resonant regulators.

Synchronous Control Method of Three-phase Inverter Under Unbalanced Conditions Using the Energy Operator (2020)
Presentation / Conference Contribution
Liu, G., Wang, W., Zhu, J., Wang, W., & Wheeler, P. (2020). Synchronous Control Method of Three-phase Inverter Under Unbalanced Conditions Using the Energy Operator. In IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society (3377-3382). https://doi.org/10.1109/IECON43393.2020.9254367

Unbalanced three-phase voltages, harmonics and DC offset to the grid voltage will affect the speed and accuracy of a grid-connected inverter when estimating the frequency and phase angle of the grid voltage. Existing synchronization methods were diff... Read More about Synchronous Control Method of Three-phase Inverter Under Unbalanced Conditions Using the Energy Operator.

Over-modulation Method of Modulated Model Predictive Control for Matrix Converters (2020)
Presentation / Conference Contribution
Sarajian, A., Guan, Q., Wheeler, P., Khaburi, D. A., Kennel, R., & Rodriquez, J. (2020). Over-modulation Method of Modulated Model Predictive Control for Matrix Converters. In IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society (4624-4629). https://doi.org/10.1109/IECON43393.2020.9254373

In this paper the potential of the modulated model predictive control (MMPC) to control a matrix converter (MC) in the linear- and over-modulation zone is investigated. Input and output current references of MC are usually used to define the control... Read More about Over-modulation Method of Modulated Model Predictive Control for Matrix Converters.

Indirect Matrix Converter-Based Grid-Tied Photovoltaics System for Smart Grids (2020)
Journal Article
Geury, T., Pinto, S. F., Gyselinck, J., & Wheeler, P. (2020). Indirect Matrix Converter-Based Grid-Tied Photovoltaics System for Smart Grids. Energies, 13(20), Article 5405. https://doi.org/10.3390/en13205405

This paper proposes an Indirect Matrix Converter (IMC)-based grid-tied Photovoltaic (PV) system for Smart Grids (SGs). The PV array injects current in the ‘dc link’ of the IMC through an inductive link, and is connected to the SG with shunt and serie... Read More about Indirect Matrix Converter-Based Grid-Tied Photovoltaics System for Smart Grids.

Filter Design and Optimization of Electromechanical Actuation Systems Using Search and Surrogate Algorithms for More-Electric Aircraft Applications (2020)
Journal Article
Gao, Y., Yang, T., Bozhko, S., Wheeler, P., & Dragicevic, T. (2020). Filter Design and Optimization of Electromechanical Actuation Systems Using Search and Surrogate Algorithms for More-Electric Aircraft Applications. IEEE Transactions on Transportation Electrification, 6(4), 1434-1447. https://doi.org/10.1109/tte.2020.3019729

In this paper, a dc filter design and optimization problem is studied for dc electrical power distribution systems onboard more-electric aircraft. Component sizing models are built to serve as the basis of the optimization whose objectives are mass a... Read More about Filter Design and Optimization of Electromechanical Actuation Systems Using Search and Surrogate Algorithms for More-Electric Aircraft Applications.

Optimal filter design for power converters regulated by FCS-MPC in the MEA (2020)
Journal Article
Gao, Y., Yang, T., Dragicevic, T., Bozhko, S., Wheeler, P., & Zheng, C. (2021). Optimal filter design for power converters regulated by FCS-MPC in the MEA. IEEE Transactions on Power Electronics, 36(3), 3258-3268. https://doi.org/10.1109/tpel.2020.3017862

For the DC electrical power distribution system onboard more electric aircraft, the voltage quality of DC bus is of a great concern since there could be significant harmonics distortions when feeding different power electronics loads. This problem ca... Read More about Optimal filter design for power converters regulated by FCS-MPC in the MEA.

Evolutionary Multiobjective Optimization of a System-Level Motor Drive Design (2020)
Journal Article
Cheong, B., Giangrande, P., Zhang, X., Galea, M., Zanchetta, P., & Wheeler, P. (2020). Evolutionary Multiobjective Optimization of a System-Level Motor Drive Design. IEEE Transactions on Industry Applications, 56(6), 6904-6913. https://doi.org/10.1109/tia.2020.3016630

The use of optimization algorithms to design motor drive components is increasingly common. To account for component interactions, complex system-level models with many input parameters and constraints are needed, along with advanced optimization tec... Read More about Evolutionary Multiobjective Optimization of a System-Level Motor Drive Design.

Three-Level Indirect Matrix Converter With Series Z-source Networks (2020)
Presentation / Conference Contribution
Effah, F. B., Wheeler, P., Okyere, P., Watson, A., Ojo, J., & Clare, J. (2020, August). Three-Level Indirect Matrix Converter With Series Z-source Networks. Presented at 2020 IEEE PES/IAS PowerAfrica, Nairobi, Kenya (online)

© 2020 IEEE. The concept of series Z-source network has been extended to a conventional indirect matrix converter in previous publications for raising the voltage gain to unity and beyond. In this paper, this idea is adapted and applied to a three-le... Read More about Three-Level Indirect Matrix Converter With Series Z-source Networks.

An Improved Coupled-Inductor Impedance Source Network With More Freedom in Winding Match (2020)
Journal Article
Ji, Y., Hongchen, L., Geng, L., Li, F., & Wheeler, P. (2020). An Improved Coupled-Inductor Impedance Source Network With More Freedom in Winding Match. IEEE Access, 8, 141472-141480. https://doi.org/10.1109/access.2020.3013103

In this paper, an improved coupled-inductor impedance source network (CL-ISN) with more freedom in winding match is proposed. Through introducing three-winding coupled-inductor cells, the proposed CL-ISN can produce the same voltage gain by using dif... Read More about An Improved Coupled-Inductor Impedance Source Network With More Freedom in Winding Match.

A Reduced Single-Phase Switched-Diode Cascaded Multilevel Inverter (2020)
Journal Article
Hosseinzadeh, M. A., Sarebanzadeh, M., Rivera, M., Babaei, E., & Wheeler, P. (2021). A Reduced Single-Phase Switched-Diode Cascaded Multilevel Inverter. IEEE Journal of Emerging and Selected Topics in Power Electronics, 9(3), 3556-3569. https://doi.org/10.1109/jestpe.2020.3010793

The cascaded multilevel inverters (MLIs) are suitable topologies when a high number of voltage levels are needed. Nonetheless, cascaded topologies possess the main drawback of a high number of power switches and gate drivers that make sophisticated c... Read More about A Reduced Single-Phase Switched-Diode Cascaded Multilevel Inverter.

Novel Permanent Magnet Synchronous Motor with Integrated Filter Inductor Using Motor's Inherent Magnetics (2020)
Journal Article
Khowja, M. R., Gerada, C., Vakil, G., Patel, C., Odhano, S. A., Walker, A., & Wheeler, P. (2021). Novel Permanent Magnet Synchronous Motor with Integrated Filter Inductor Using Motor's Inherent Magnetics. IEEE Transactions on Industrial Electronics, 68(7), 5638-5649. https://doi.org/10.1109/tie.2020.3000110

A close functional and structural integration of passive elements is required to improve the power density of motor drives. Such power-dense motor drives are prerequisites in aerospace and automotive applications. This article presents a permanent ma... Read More about Novel Permanent Magnet Synchronous Motor with Integrated Filter Inductor Using Motor's Inherent Magnetics.

Improved Predictive Control in Multi-Modular Matrix Converter for Six-Phase Generation Systems (2020)
Journal Article
Toledo, S., Maqueda, E., Rivera, M., Gregor, R., Wheeler, P., & Romero, C. (2020). Improved Predictive Control in Multi-Modular Matrix Converter for Six-Phase Generation Systems. Energies, 13(10), Article 2660. https://doi.org/10.3390/en13102660

Distributed generation systems are emerging as a good solution as part of the response to the world’s growing energy demand. In this context multi-phase wind generation systems are a feasible option. These systems consist of renewable AC sources whic... Read More about Improved Predictive Control in Multi-Modular Matrix Converter for Six-Phase Generation Systems.

A Generalized Input Impedance Model of Multiple Active Bridge Converter (2020)
Journal Article
Yang, J., Buticchi, G., Gu, C., Gunter, S., Zhang, H., & Wheeler, P. (2020). A Generalized Input Impedance Model of Multiple Active Bridge Converter. IEEE Transactions on Transportation Electrification, 6(4), 1695-1706. https://doi.org/10.1109/tte.2020.2986604

The electrical power distribution system (EPDS) of the more electric aircraft (MEA) is a fundamental component that needs to be efficient and resilient. The commonly considered architectures feature separate buses to achieve separation between differ... Read More about A Generalized Input Impedance Model of Multiple Active Bridge Converter.

A Cascade PI-SMC Method for Brushless Doubly-Fed Induction Machine with Matrix Converter (2020)
Presentation / Conference Contribution
Zhao, X., Wang, H., Dan, H., Di, Z., Sun, Y., Su, M., …Wheeler, P. (2020). A Cascade PI-SMC Method for Brushless Doubly-Fed Induction Machine with Matrix Converter. In Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition 2020 (2526-2528). https://doi.org/10.1109/APEC39645.2020.9124209

This paper proposes a cascade proportional-integral continuous second-order sliding mode control method for brushless doubly-fed induction machine. This method consists of the speed out-loop proportional-integral controller and the current inner-loop... Read More about A Cascade PI-SMC Method for Brushless Doubly-Fed Induction Machine with Matrix Converter.

Control Strategy and Communication Architecture for Power Sharing in Microgrids (2020)
Presentation / Conference Contribution
Perez-Guzman, R. E., Salgueiro, Y., Rivera, M., & Wheeler, P. W. (2020). Control Strategy and Communication Architecture for Power Sharing in Microgrids. In Proceedings: 2020 IEEE International Conferenceon Industrial Technology (1167-1172). https://doi.org/10.1109/ICIT45562.2020.9067288

The increasing needs of control, security and generation capacity of microgrids, has raised the complexity of the network and have allowed the evolution of architecture as a cluster. This increase in complexity demands control strategies in real-time... Read More about Control Strategy and Communication Architecture for Power Sharing in Microgrids.