Outputs (75)

Multi-exposure laser speckle contrast imaging using a high frame rate CMOS sensor with a field programmable gate array (2015)
Journal Article
Sun, S., Hayes-Gill, B. R., He, D., Zhu, Y., & Morgan, S. P. (2015). Multi-exposure laser speckle contrast imaging using a high frame rate CMOS sensor with a field programmable gate array. Optics Letters, 40(20), https://doi.org/10.1364/OL.40.004587

A system has been developed in which multi-exposure Laser Speckle Contrast Imaging (LSCI) is implemented using a high frame rate CMOS imaging sensor chip. Processing is performed using a Field Programmable Gate Array (FPGA). The system allows differe... Read More about Multi-exposure laser speckle contrast imaging using a high frame rate CMOS sensor with a field programmable gate array.

Estimating current derivatives for sensorless motor drive applications (2015)
Presentation / Conference Contribution
Hind, D. M., Sumner, M., & Gerada, C. Estimating current derivatives for sensorless motor drive applications. Presented at 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe)

The PWM current derivative technique for sensorless control of AC machines requires current derivative measurements under certain PWM vectors. This is often not possible under narrow PWM vectors due to high frequency (HF) oscillations which affect th... Read More about Estimating current derivatives for sensorless motor drive applications.

Short-circuit fault analysis and isolation strategy for matrix converters (2015)
Journal Article
Wang, L.-N., De Lillo, L., Brunson, C., Empringham, L., & Wheeler, P. (in press). Short-circuit fault analysis and isolation strategy for matrix converters. Journal of Central South University of Technology, 22(9), https://doi.org/10.1007/s11771-015-2886-y

The behavior of matrix converter (MC) drive systems under the condition of MC short-circuit faults is comprehensively investigated. Two isolation strategies using semiconductors and high speed fuses (HSFs) for MC short-circuit faults are examined and... Read More about Short-circuit fault analysis and isolation strategy for matrix converters.

Functional modelling of symmetrical multi-pulse auto- transformer rectifier units for aerospace applications (2015)
Journal Article
Yang, T., Bozhko, S., & Asher, G. (2015). Functional modelling of symmetrical multi-pulse auto- transformer rectifier units for aerospace applications. IEEE Transactions on Power Electronics, 30(9), https://doi.org/10.1109/TPEL.2014.2364682

This paper aims to develop a functional model of symmetrical multi-pulse Auto-Transformer Rectifier Units (ATRUs) for More-Electric Aircraft (MEA) applications. The ATRU is seen as the most reliable way readily to be applied in the MEA. Interestingly... Read More about Functional modelling of symmetrical multi-pulse auto- transformer rectifier units for aerospace applications.

Threshold manipulation in parity-time symmetric microresonator chain (2015)
Presentation / Conference Contribution
Phang, S., Vukovic, A., Creagh, S., Benson, T. M., Gradoni, G., & Sewell, P. D. Threshold manipulation in parity-time symmetric microresonator chain. Presented at 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics

This paper analyses the eigenfrequencies of an infinitely long chain of microresonators with PT symmetry. The results show that the depth of modulation of the real part of the refractive index can be used to control the threshold point of the PT stru... Read More about Threshold manipulation in parity-time symmetric microresonator chain.

Analysis and implementation of power management and control strategy for six-phase multilevel ac drive system in fault condition (2015)
Journal Article
Padmanaban, S., Grandi, G., Blaabjerg, F., Wheeler, P., & Ojo, J. O. (2016). Analysis and implementation of power management and control strategy for six-phase multilevel ac drive system in fault condition. Engineering Science and Technology, an International Journal, 19(1), https://doi.org/10.1016/j.jestch.2015.07.007

This research article exploits the power management algorithm in post-fault conditions for a six-phase (quad) multilevel inverter. The drive circuit consists of four 2-level, three-phase voltage source inverter (VSI) supplying a six-phase open-end wi... Read More about Analysis and implementation of power management and control strategy for six-phase multilevel ac drive system in fault condition.

Parity-time chain of whispering-gallery mode resonators (2015)
Presentation / Conference Contribution
Phang, S., Vukovic, A., Creagh, S., Benson, T. M., Gradoni, G., & Sewell, P. D. Parity-time chain of whispering-gallery mode resonators. Presented at META15, the 6th International Conference on Metamaterials, Photonic Crystals and Plasmonics

The paper analyses the dispersion characteristics of an infinitely long PT chain made of whispering gallery resonators with gain/loss modulation. The results show that the appearance of the threshold breaking point depends not only on both of couplin... Read More about Parity-time chain of whispering-gallery mode resonators.

Fast convergence delayed signal cancellation method for sequence component separation (2015)
Journal Article
Cardenas, R., Diaz, M., Rojas, F., & Clare, J. C. (2015). Fast convergence delayed signal cancellation method for sequence component separation. IEEE Transactions on Power Delivery, 30(4), https://doi.org/10.1109/TPWRD.2014.2373038

Delayed Signal Cancellation (DSC) is one of the methods used to separate the negative and positive sequence components in unbalanced 34 systems. In this paper a DSC methodology with a fast convergence time is proposed and is shown that an improved se... Read More about Fast convergence delayed signal cancellation method for sequence component separation.

High temperature pulsed-gate robustness testing of SiC power MOSFETs (2015)
Journal Article
Fayyaz, A., & Castellazzi, A. (2015). High temperature pulsed-gate robustness testing of SiC power MOSFETs. Microelectronics Reliability, 55(9-10), 1724-1728. https://doi.org/10.1016/j.microrel.2015.06.141

© 2015 Elsevier Ltd. Silicon Carbide (SiC) gate oxide reliability still remains a crucial issue and is amongst the important consideration factors when it comes to the implementation of SiC MOS-based devices within industrial power electronic applica... Read More about High temperature pulsed-gate robustness testing of SiC power MOSFETs.

Robustness analysis and experimental validation of a fault detection and isolation method for the modular multilevel converter (2015)
Journal Article
Shao, S., Watson, A. J., Clare, J. C., & Wheeler, P. (2016). Robustness analysis and experimental validation of a fault detection and isolation method for the modular multilevel converter. IEEE Transactions on Power Electronics, 31(5), 3794-3805. https://doi.org/10.1109/TPEL.2015.2462717

This paper presents a fault detection and isolation (FDI) method for open-circuit faults of power semiconductor devices in a modular multilevel converter (MMC). The proposed FDI method is simple with only one sliding mode observer (SMO) equation and... Read More about Robustness analysis and experimental validation of a fault detection and isolation method for the modular multilevel converter.