Professor PATRICK WHEELER's Outputs (288)

Construction and testing of the 3.3 kV, 300 kVA UNIFLEX-PM prototype (2009)
Journal Article
Watson, A. J., Mondai, G., Dang, H., Wheeler, P. W., & Clare, J. C. (2009). Construction and testing of the 3.3 kV, 300 kVA UNIFLEX-PM prototype. Epe Journal, 19(4), 59-64. https://doi.org/10.1080/09398368.2009.11463738

This paper presents details of the experimental implementation of a prototype multi-cellular converter for application in future electricity supply networks. Such a converter is capable of independently controlling power flow between various parts of... Read More about Construction and testing of the 3.3 kV, 300 kVA UNIFLEX-PM prototype.

Control challenges and solutions for a multi-cellular converter for use in electricity networks (2009)
Journal Article
Watson, A. J., Dang, H. Q., Wheeler, P. W., Clare, J. C., Mondai, G., Kenzelmann, S., Rufer, A. R., & De Novaes, Y. R. (2009). Control challenges and solutions for a multi-cellular converter for use in electricity networks. EPE Journal (European Power Electronics and Drives Journal), 19(4), 25-31. https://doi.org/10.1080/09398368.2009.11463734

This paper presents the concept of a multi-cellular power converter structure targeted towards use in future electricity networks. Control of such a converter is challenging because of the distributed energy storage intrinsic to the concept. If the e... Read More about Control challenges and solutions for a multi-cellular converter for use in electricity networks.

Feed-forward space vector modulation for single-phase multilevel cascaded converters with any DC voltage ratio (2008)
Journal Article
Leon, J. I., Vazquez, S., Watson, A. J., Franquelo, L. G., Wheeler, P. W., & Carrasco, J. M. (2009). Feed-forward space vector modulation for single-phase multilevel cascaded converters with any DC voltage ratio. IEEE Transactions on Industrial Electronics, 56(2), 315-325. https://doi.org/10.1109/TIE.2008.926777

Modulation techniques for multilevel converters can create distorted output voltages and currents if the dc-link voltages are unbalanced. This situation can be avoided if the instantaneous dc voltage error is not taken into account in the modulation... Read More about Feed-forward space vector modulation for single-phase multilevel cascaded converters with any DC voltage ratio.

Predictive current control of an induction machine fed by a matrix converter with reactive power control (2008)
Journal Article
Vargas, R., Rodriguez, J., Ammann, U., & Wheeler, P. W. (2008). Predictive current control of an induction machine fed by a matrix converter with reactive power control. IEEE Transactions on Industrial Electronics, 55(12), 4362 - 4371. https://doi.org/10.1109/TIE.2008.2006947

A different approach to perform the control of an induction machine fed by a matrix converter (MC) is presented in this paper. The proposed technique is based on predictive control and effectively controls input and output variables to the power conv... Read More about Predictive current control of an induction machine fed by a matrix converter with reactive power control.

Three-Dimensional Feedforward Space Vector Modulation Applied to Multilevel Diode-Clamped Converters (2008)
Journal Article
Leon, J. I., Vazquez, S., Portillo, R., Franquelo, L. G., Carrasco, J. M., Wheeler, P. W., & Watson, A. J. (2009). Three-Dimensional Feedforward Space Vector Modulation Applied to Multilevel Diode-Clamped Converters. IEEE Transactions on Industrial Electronics, 56(1), 101-109. https://doi.org/10.1109/TIE.2008.928110

Simplified space vector modulation (SVM) techniques for multilevel converters are being developed to improve factors such as the computational cost, number of commutations, and voltage distortion. The feedforward SVM presented in this paper takes int... Read More about Three-Dimensional Feedforward Space Vector Modulation Applied to Multilevel Diode-Clamped Converters.

Implementation of a hybrid AC-AC direct power converter with unity voltage transfer (2008)
Journal Article
Wijekoon, T., Klumpner, C., Zanchetta, P., & Wheeler, P. (2008). Implementation of a hybrid AC-AC direct power converter with unity voltage transfer. IEEE Transactions on Power Electronics, 23(4), https://doi.org/10.1109/TPEL.2008.924601

This paper presents a novel hybrid direct power converter (HDPC) which overcomes the two main disadvantages of matrix converters: limited voltage transfer ratio and low immunity to grid disturbance. The proposed converter is formed by integrating a r... Read More about Implementation of a hybrid AC-AC direct power converter with unity voltage transfer.

A complete harmonic elimination approach to DC link voltage balancing for a cascaded multilevel rectifier (2007)
Journal Article
Watson, A. J., Wheeler, P. W., & Clare, J. C. (2007). A complete harmonic elimination approach to DC link voltage balancing for a cascaded multilevel rectifier. IEEE Transactions on Industrial Electronics, 54(6), 2946-2953. https://doi.org/10.1109/TIE.2007.906993

This paper presents a complete method that is used to balance dc link voltages in a cascaded H-Bridge (CHB) multilevel rectifier. Recently, such converters have been the subject of extensive research due to their suitability for high-power applicatio... Read More about A complete harmonic elimination approach to DC link voltage balancing for a cascaded multilevel rectifier.

Sensorless control of surface mounted permanent magnet synchronous motors using matrix converters (2006)
Journal Article
Saltiveri, D., Arias, A., Asher, G., Sumner, M., Wheeler, P., Empringham, L., & Silva, C. (2006). Sensorless control of surface mounted permanent magnet synchronous motors using matrix converters. Electrical Power Quality and Utilisation Journal (Print), 10(1), 59--67

This paper investigates the influence of the power converter on the performance of Surface Mounted Permanent Magnet Synchronous Motor drives, which employ High Frequency voltage injection to achieve low and zero speed control. Experimental results de... Read More about Sensorless control of surface mounted permanent magnet synchronous motors using matrix converters.