Professor PATRICK WHEELER's Outputs (576)

Current fed multipulse rectifier approach for unidirectional HVDC and MVDC applications (2018)
Journal Article
Lambert, G., Vieira Soares, M., Wheeler, P., Lobo Heldwein, M., & Romulo de Novaes, Y. (in press). Current fed multipulse rectifier approach for unidirectional HVDC and MVDC applications. IEEE Transactions on Power Electronics, https://doi.org/10.1109/TPEL.2018.2849927

Even though multipulse rectifiers are a long established and well-known technology, still their behavior is not fully described in the literature when they are fed by three-phase balanced sinusoidal currents sources. To address the aforementioned gap... Read More about Current fed multipulse rectifier approach for unidirectional HVDC and MVDC applications.

Modified modulation scheme for three‐level diode‐clamped matrix converter under unbalanced input conditions (2018)
Journal Article
Su, M., Zhao, Z., Dan, H., Peng, T., Sun, Y., Che, R., Zhang, F., Zhu, Q., & Wheeler, P. (2018). Modified modulation scheme for three‐level diode‐clamped matrix converter under unbalanced input conditions. IET Power Electronics, 11(8), 1425-1433. https://doi.org/10.1049/iet-pel.2017.0512

The three-level diode-clamped matrix converter topology has outstanding performance under ideal operating conditions. However, input disturbance can influence the waveforms at the output side of the converter due to the direct coupling between the in... Read More about Modified modulation scheme for three‐level diode‐clamped matrix converter under unbalanced input conditions.

Control of modular multilevel cascade converters for offshore wind energy generation and transmission (2018)
Presentation / Conference Contribution
Diaz, M., Rojas, F., Donoso, F., Cardenas, R., Espinoza, M., Mora, A., & Wheeler, P. (2018, April). Control of modular multilevel cascade converters for offshore wind energy generation and transmission. Presented at 2018 Thirteenth International Conference on Ecological Vehicles and Renewable Energies (EVER), Monte Carlo, Monaco

The trend of multimegawatt (Multi-MW) wind turbines, especially for offshore installations, has positioned Modular Multilevel Cascade Converters (MMCCs) as a promising solution for Wind Energy Conversion Systems (WECSs). Additionally, High Voltage Di... Read More about Control of modular multilevel cascade converters for offshore wind energy generation and transmission.

A Modified Neutral Point Balancing Space Vector Modulation for Three-Level Neutral Point Clamped Converters in High-Speed Drives (2018)
Journal Article
Li, C., Yang, T., Kulsangcharoen, P., Lo Calzo, G., Bozhko, S., Gerada, C., & Wheeler, P. (2019). A Modified Neutral Point Balancing Space Vector Modulation for Three-Level Neutral Point Clamped Converters in High-Speed Drives. IEEE Transactions on Industrial Electronics, 66(2), 910-921. https://doi.org/10.1109/TIE.2018.2835372

© 2018 IEEE. This paper describes a high-performance neutral point voltage balancing technique for a neutral point clamped (NPC) converter. Conventional neutral point voltage balancing methods do not function well under low power factor, low pulse ra... Read More about A Modified Neutral Point Balancing Space Vector Modulation for Three-Level Neutral Point Clamped Converters in High-Speed Drives.

Vector control strategies to enable equal frequency operation of the modular multilevel matrix converter (2018)
Presentation / Conference Contribution
Diaz, M., Espinoza, M., Rojas, F., Wheeler, P., & Cardenas, R. (2018, April). Vector control strategies to enable equal frequency operation of the modular multilevel matrix converter. Presented at 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018), Liverpool, UK

The Modular Multilevel Matrix Converter (M3C) is an ac-to-ac converter suitable for high-power applications. The control of this converter is complex, mainly when the frequencies of the ac systems connected to the ports of the converter are close or... Read More about Vector control strategies to enable equal frequency operation of the modular multilevel matrix converter.

New modulation scheme for bidirectional quasi z-source modular multilevel converters (2018)
Presentation / Conference Contribution
Khera, F., Klumpner, C., & Wheeler, P. New modulation scheme for bidirectional quasi z-source modular multilevel converters. Presented at 9th International Conference on Power Electronics, Machines and Drives

This paper proposes a dedicated modulation scheme for a bidirectional quasi Z-source modular multilevel converter (BqZS-MMC). The operation principle and a suitable PWM method are proposed. The relation between the modulation index and shoot-through... Read More about New modulation scheme for bidirectional quasi z-source modular multilevel converters.

Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application (2018)
Presentation / Conference Contribution
Fritz, N., Rashed, M., Bozhko, S., Cuomo, F., & Wheeler, P. Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application. Presented at 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018)

A design procedure for the Dual Active Bridge (DAB) converter is presented, which aims to optimized power density and computational effort. When designing a DAB, the selection of circuit design parameters such as switching frequency, leakage inductan... Read More about Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application.

Flux control modulation for the dual active bridge DC/DC converter (2018)
Presentation / Conference Contribution
Fritz, N., Rashed, M., Bozhko, S., Cuomo, F., & Wheeler, P. (2018, April). Flux control modulation for the dual active bridge DC/DC converter. Paper presented at 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018)

This paper introduces a novel modulation technique for the single phase Dual Active Bridge (DAB) in which the switching frequency and transformer flux are modulated to achieve improved power transfer characteristics and reduced converter losses. By a... Read More about Flux control modulation for the dual active bridge DC/DC converter.

An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications (2018)
Presentation / Conference Contribution
Li, C., Yang, T., Lo Calzo, G., Bozhko, S., Gerada, C., & Wheeler, P. An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications. Presented at 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018)

Electrical starter/generator (ESG) system is one of the key innovations of more-electric aircraft initiative. The ESG cranks the engine and accelerates it up to self-sustained speed using electric energy (starter mode) and then runs as a generator to... Read More about An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications.

Model predictive control for Active-Bridge-Active-Clamp (ABAC) converter (2018)
Presentation / Conference Contribution
Chen, L., Tarisciotti, L., Costabeber, A., Gottardo, D., Zanchetta, P., & Wheeler, P. (2018, April). Model predictive control for Active-Bridge-Active-Clamp (ABAC) converter. Presented at 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018)

The Dual-Active-Bridge is a well-established isolated, bidirectional DC/DC topology suitable for applications where high efficiency, galvanic isolation and large voltage conversion ratios are required. However, in low voltage high power cases, the ou... Read More about Model predictive control for Active-Bridge-Active-Clamp (ABAC) converter.

Operation principles of quasi Z-source modular multilevel converters (2018)
Presentation / Conference Contribution
Khera, F. A., Klumpner, C., & Wheeler, P. W. (2017, December). Operation principles of quasi Z-source modular multilevel converters. Presented at 3rd IEEE Southern Power Electronics Conference (SPEC 2017), Puerto Varas, Chile

This paper proposes the integration of a quasi Z-source network with a modular multilevel converter (MMC) to provide voltage boost capability. The proposed quasi-Z-source MMC uses two symmetrical networks of inductors and capacitors connected between... Read More about Operation principles of quasi Z-source modular multilevel converters.

Modulated predictive control for indirect matrix converter (2018)
Journal Article
Tarisciotti, L., Lei, J., Formentini, A., Trentin, A., Zanchetta, P., Wheeler, P., & Rivera, M. (in press). Modulated predictive control for indirect matrix converter. IEEE Transactions on Industry Applications, https://doi.org/10.1109/TIA.2017.2699666

Finite State Model Predictive Control (MPC) has been recently applied to several converter topologies as it can provide many advantages over other MPC techniques. The advantages of MPC include fast dynamics, multi-target control capability and relati... Read More about Modulated predictive control for indirect matrix converter.

Generic functional modelling of multi-pulse auto-transformer rectifier units for more-electric aircraft applications (2018)
Journal Article
Yang, T., Bozhko, S., Wheeler, P., Wang, S., & Wu, S. (2018). Generic functional modelling of multi-pulse auto-transformer rectifier units for more-electric aircraft applications. Chinese Journal of Aeronautics, 31(5), 883-891. https://doi.org/10.1016/j.cja.2018.03.010

The Auto-Transformer Rectifier Unit (ATRU) is one preferred solution for high-power AC/DC power conversion in aircraft. This is mainly due to its simple structure, high reliability and reduced kVA ratings. Indeed, the ATRU has become a preferred AC/D... Read More about Generic functional modelling of multi-pulse auto-transformer rectifier units for more-electric aircraft applications.

Design and testing of electromechanical actuator for aerospace applications (2018)
Presentation / Conference Contribution
Papini, L., Connor, P., Patel, C., Empringham, L., Gerada, C., & Wheeler, P. (2018, January). Design and testing of electromechanical actuator for aerospace applications. Presented at 2018 25th International Workshop on Electric Drives: Optimization in Control of Electric Drives (IWED), Moscow, Russia

Electromechanical actuators are gaining interest in the aerospace industry within the More Electrical Aircraft (MEA) architecture. The end-goal of fully electric aircraft includes Electromechanical actuation for flight control systems. The design and... Read More about Design and testing of electromechanical actuator for aerospace applications.

Bidirectional partial power converter interface for energy storage systems to provide peak shaving in grid-tied PV plants (2018)
Presentation / Conference Contribution
Muller, N., Kouro, S., Zanchetta, P., & Wheeler, P. Bidirectional partial power converter interface for energy storage systems to provide peak shaving in grid-tied PV plants. Presented at 2018 IEEE International Conference on Industrial Technology (ICIT)

The ever growing participation of modern renewable resources in electric markets has shaken the paradigm of generation-demand constant match. Most modern renewables add intermittent behaviour and high variability to electric markets, forcing other re... Read More about Bidirectional partial power converter interface for energy storage systems to provide peak shaving in grid-tied PV plants.

Neural network based maximum power point tracking control with quadratic boost converter for PMSG—wind energy conversion system (2018)
Journal Article
Tiwari, R., Krishnamurthy, K., Neelakandan, R., Padmanaban, S., & Wheeler, P. (2018). Neural network based maximum power point tracking control with quadratic boost converter for PMSG—wind energy conversion system. Electronics, 7(2), Article 20. https://doi.org/10.3390/electronics7020020

This paper proposes an artificial neural network (ANN) based maximum power point tracking (MPPT) control strategy for wind energy conversion system (WECS) implemented with a DC/DC converter. The proposed topology utilizes a radial basis function netw... Read More about Neural network based maximum power point tracking control with quadratic boost converter for PMSG—wind energy conversion system.

A modified virtual space vector modulation technique for Z-source NPC inverters (2018)
Journal Article
Effah, F., Okyere, P., Patrick, W., Alan, W., & Clare, J. (2018). A modified virtual space vector modulation technique for Z-source NPC inverters. Carpathian Journal of Electrical Engineering, 12(1), 99--113

A modified virtual space vector modulation approach for the control of a Z-source neutral point clamped inverter is presented in this paper. This approach works perfectly for the traditional neutral point clamped inverter. In this paper, the effectiv... Read More about A modified virtual space vector modulation technique for Z-source NPC inverters.

Indirect model predictive control strategy with active damping implementation for a direct matrix converter operating at fixed switching frequency (2017)
Presentation / Conference Contribution
Rivera, M., Dan, H., Tarisciotti, L., & Wheeler, P. Indirect model predictive control strategy with active damping implementation for a direct matrix converter operating at fixed switching frequency. Presented at 2017 CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)

One of the main drawbacks of the implementation of predictive control in a direct matrix converter is the high com¬putational cost and the adequate selection of weighting factors in order to control both input and output sides. In this paper is propo... Read More about Indirect model predictive control strategy with active damping implementation for a direct matrix converter operating at fixed switching frequency.

Indirect predictive control strategy with fixed switching frequency for a direct matrix converter (2017)
Presentation / Conference Contribution
Rivera, M., Tariscotti, L., Wheeler, P., & Bayhan, S. Indirect predictive control strategy with fixed switching frequency for a direct matrix converter. Presented at 43rd Annual Conference of the IEEE Industrial Electronics Society - IECON 2017

The direct matrix converter has a large number of available switching states which implies that the implementation of predictive control techniques in this converter requires high computational cost while an adequate selection of weighting factors in... Read More about Indirect predictive control strategy with fixed switching frequency for a direct matrix converter.

Electric superbike racing: the design and construction of a championship winning electric superbike (2017)
Presentation / Conference Contribution
Wheeler, P., Blissett, J., & Gimeno-Fabra, M. Electric superbike racing: the design and construction of a championship winning electric superbike. Presented at 2017 7th International Conference on Power Electronics Systems and Applications (PESA 2017)

The electric superbikes recently developed at The University of Nottingham have to be considered as a high performance vehicles, competing with its internal combustion engine driven counterparts. This paper presents the motivations for this work as w... Read More about Electric superbike racing: the design and construction of a championship winning electric superbike.