If you made any changes in Pure these will be visible here soon.

Research Output 2011 2019

2019
13 Downloads (Pure)

A New Approach for Broken Rotor Bar Detection in Induction Motors Using Frequency Extraction in Stray Flux Signals

Panagiotou, P., Arvanitakis, I., Lophitis, N., Antonino-Daviu, J. A. & Gyftakis, K. N., 1 Jul 2019, In : IEEE Transactions on Industry Applications. 55, 4, p. 3501-3511 11 p., 8668548.

Research output: Contribution to journalArticle

Open Access
File
Induction motors
Rotors
Fluxes
Fast Fourier transforms
Poles
1 Citation (Scopus)
2 Downloads (Pure)

Carrier Transport mechanisms contributing to the sub-threshold current in 3C-SiC-on-Si Schottky Barrier Diodes

Arvanitopoulos, A., Perkins, S., Gyftakis, K. N., Lophitis, N., Jennings, M. & Antoniou, M., 13 Jun 2019, 2018 1st Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2018. IEEE, p. 169-173 5 p. 8734538

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
Schottky barrier diodes
Carrier transport
Silicon
Diode
Silicon carbide
13 Downloads (Pure)

Deep p-ring trench termination: An innovative and cost-effective way to reduce silicon area

Antoniou, M., Lophitis, N., Udrea, F., Rahimo, M. T., Vemulapati, U. R., Corvarsce, C. & Badstuebner, U., Feb 2019, In : IEEE Electron Device Letters. 40, 2, p. 177 - 180 4 p.

Research output: Contribution to journalArticle

Open Access
File
Silicon
Hot carriers
Electric potential
Oxides
Costs
3 Downloads (Pure)

FEM approach for diagnosis of induction machines' non-adjacent broken rotor bars by short-time Fourier transform spectrogram

Panagiotou, P., Arvanitakis, I., Lophitis, N., Antonino-Daviu, J. A. & Gyftakis, K. N., 17 Jun 2019, In : The Journal of Engineering. 2019, 17, p. 4566-4570 5 p.

Research output: Contribution to journalArticle

Open Access
File
Fourier transforms
Rotors
Finite element method
Stators
Fluxes

Frequency Extraction of Current Signal Spectral Electrical Faults in Induction Motors

Panagiotou, P. A., Arvanitakis, I., Lophitis, N. & Gyftakis, K. N., 28 Apr 2019, (Accepted/In press) 12th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives (SDEMPED 2019). IEEE, Vol. (In-Press). p. (In-Press)

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Induction motors
Decomposition
38 Downloads (Pure)

On the broken rotor bar diagnosis using time-frequency analysis: 'Is one spectral representation enough for the characterisation of monitored signals?'

Panagiotou, P., Arvanitakis, I., Lophitis, N., Antonino-Daviu, J. A. & Gyftakis, K. N., 11 Jul 2019, In : IET Electric Power Applications. 13, 7, p. 932-942 11 p.

Research output: Contribution to journalArticle

Open Access
File
Condition monitoring
Digital signal processing
Induction motors
Rotors
Inspection

On the robustness of ultra-high voltage 4H-SiC IGBTs with an optimized retrograde p-well

Tiwari, A. K., Antoniou, M., Perkins, S., Lophitis, N., Trajkovic, T. & Udrea, F., 28 Apr 2019, (Accepted/In press) 12th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives (SDEMPED 2019). IEEE, p. (In-Press)

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

high voltages
oxides
punches
electric fields
threshold voltage
2 Downloads (Pure)

On the Static Performance of Commercial GaN-on-Si Devices at Elevated Temperatures

Perkins, S., Arvanitopoulos, A., Gyftakis, K. N. & Lophitis, N., 13 Jun 2019, 2018 1st Workshop on Wide Bandgap Power Devices and Applications in Asia, WiPDA Asia 2018. IEEE, p. 174-178 5 p. 8734593

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
Gallium nitride
Nitrides
Silicon
Temperature
Temperature Measurement
16 Downloads (Pure)

On the suitability of 3C- Silicon Carbide as an alternative to 4H- Silicon Carbide for power diodes

Arvanitopoulos, A., Antoniou, M., Perkins, S., Jennings, M. R., Belanche Guadas, M., Gyftakis, K. N. & Lophitis, N., 1 Jul 2019, In : IEEE Transactions on Industry Applications. 55, 4, p. 4080-4090 11 p., 8693517.

Research output: Contribution to journalArticle

Open Access
File
Silicon carbide
Computer aided design
Physical properties
Finite element method
Fabrication
2 Downloads (Pure)

Operation of Ultra-High Voltage (>10kV) SiC IGBTs at Elevated Temperatures: Benefits & Constraints

K. Tiwari, A., Udrea, F., Lophitis, N. & Antoniou, M., 11 Jul 2019, The 31st IEEE International Symposium on Power Semiconductor Devices and ICs (ISPSD). IEEE, p. 175-178 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
Insulated gate bipolar transistors (IGBT)
Electric potential
Temperature
Electric breakdown
Leakage currents

Optimal edge termination for high oxide reliability aiming 10kV SiC n-IGBTs

Perkins, S., Antoniou, M., Tiwari, A. K., Arvanitopoulos, A., Gyftakis, K. N., Trajkovic, T., Udrea, F. & Lophitis, N., 28 Apr 2019, (Accepted/In press) 12th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives (SDEMPED 2019). IEEE, Vol. (In-Press). p. (In-Press)

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Insulated gate bipolar transistors (IGBT)
Oxides
Electric fields
Doping (additives)
Electric potential

Performance improvement of >10kV SiC IGBTs with retrograde p-well

K. Tiwari, A., Antoniou, M., Lophitis, N., Perkins, S., Trajkovic, T. & Udrea, F., 31 Jul 2019, The 12th European Conference on Silicon Carbide and Related Materials (ECSCRM). Trans Tech Publications, Vol. (In-Press). p. 639-642 4 p. (Materials Science Forum; vol. 963).

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Insulated gate bipolar transistors (IGBT)
Doping (additives)
Threshold voltage
Oxides
Electric potential
13 Downloads (Pure)

Retrograde p-well for 10kV-class SiC IGBTs

K. Tiwari, A., Antoniou, M., Lophitis, N., Perkins, S., Trajkovic, T. & Udrea, F., Jul 2019, In : IEEE Transactions on Electron Devices. 66, 7, p. 3066-3072 7 p., 8728169.

Research output: Contribution to journalArticle

Open Access
File
Insulated gate bipolar transistors (IGBT)
Threshold voltage
Oxides
Electric potential
Doping (additives)

Viable 3C-SiC-on-Si MOSFET design disrupting current Material Technology Limitations

Arvanitopoulos, A., Antoniou, M., Li, F., Jennings, M. R., Perkins, S., Gyftakis, K. N. & Lophitis, N., 27 Apr 2019, (Accepted/In press) 12th IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives (SDEMPED 2019). IEEE, Vol. (In-Press). p. (In-Press)

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

MOSFET devices
Silicon carbide
Silicon
Silicon wafers
Ion implantation
2018

>10kV 4H-SiC n-IGBTs for Elevated Temperature Environments

Perkins, S., Antoniou, M., K. Tiwari, A., Arvanitopoulos, A., Trajkovic, T., Udrea, F. & Lophitis, N., Aug 2018.

Research output: Contribution to conferencePaper

Insulated gate bipolar transistors (IGBT)
Temperature
Engineers
Fabrication
Electric potential
3 Citations (Scopus)
29 Downloads (Pure)

Analysis of Stray Flux Spectral Components in Induction Machines under Rotor Bar Breakages at Various Locations

Panagiotou, P., Arvanitakis, I., Lophitis, N., Antonino-Daviu, J. A. & Gyftakis, K. N., 25 Oct 2018, 2018 XIII International Conference on Electrical Machines (ICEM). IEEE

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
Rotors
Fluxes
Induction motors
21 Downloads (Pure)

Development and Verification of a Distributed Electro-Thermal Li-Ion Cell Model

Stocker, R., Lophitis, N. & Mumtaz, A., Oct 2018, 44th Annual Conference of the IEEE Industrial Electronics Society (IECON) 2018. IEEE, p. 2044-2049 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
Ions
Hot Temperature
Parameterization
Equivalent circuits
Manganese

FEM Approach for Diagnosis of Induction Machines’ Non-Adjacent Broken Rotor Bars by STFT Spectrogram

Panagiotou, P., Arvanitakis, I., Lophitis, N., Antonino-Daviu, J. A. & Gyftakis, K. N., 2018, p. (in press).

Research output: Contribution to conferencePaper

Rotors
Finite element method
Stators
Condition monitoring
Induction motors
34 Downloads (Pure)

FEM Study of Induction Machines Suffering from Rotor Electrical Faults Using Stray Flux Signature Analysis

Panagiotou, P., Arvanitakis, I., Lophitis, N. & Gyftakis, K. N., 25 Oct 2018, 2018 XIII International Conference on Electrical Machines (ICEM). IEEE, p. 1861-1867 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
Rotors
Fluxes
Finite element method
Variable speed drives
Condition monitoring

On the development of the 3C-SiC Power Law and its applicability for the Evaluation of Termination Structures

Arvanitopoulos, A., Perkins, S., Antoniou, M., Li, F., Jennings, M., Gyftakis, K. N. & Lophitis, N., Aug 2018, International Symposium on Power Semiconductors (ISPS). Prague, Czech Republic

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Silicon carbide
Schottky barrier diodes
Epitaxial layers
Electric breakdown
Computer aided design
12 Downloads (Pure)

Optimal Gate Commutated Thyristor Design for Bi-mode Gate Commutated Thyristors Underpinning High, Temperature Independent, Current Controllability

Lophitis, N., Antoniou, M., Vemulapati, U. R., Vobecky, J., Badstuebner, U., Wikstrom, T., Stiasny, T., Rahimo, M. T. & Udrea, F., Sep 2018, In : IEEE Electron Device Letters. 39, 9, p. 1342-1345 4 p.

Research output: Contribution to journalArticle

Open Access
File
Controllability
Thyristors
Temperature
Diodes
4 Downloads (Pure)

TCAD device modelling and simulation of wide bandgap power semiconductors

Lophitis, N., Arvanitopoulos, A., Perkins, S. & Antoniou, M., 12 Sep 2018, Disruptive Wide Bandgap Semiconductors, Related Technologies, and their Applications. Kumar Sharma, Y. (ed.). InTech – Open Access Publisher, p. 17-44 28 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

Open Access
File
computer aided design
gallium nitrides
silicon carbides
simulation
diamonds
2017

3C-SiC material parameters for accurate TCAD modeling and simulation

Arvanitopoulos, A., Perkins, S., Gyftakis, K. N., Antoniou, M. & Lophitis, N., May 2017, The 10th International Conference on Silicon Epitaxy and Heterostructures: ICSI-10. p. 115-116 2 p.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Silicon carbide
Computer aided design
Gallium nitride
Electronics industry
Power electronics
1 Citation (Scopus)
176 Downloads (Pure)

A comprensive Comparison of the Static Performance of Commercial GaN-on-Si Devices

Perkins, S., Arvanitopoulos, A., Gyftakis, K. N. & Lophitis, N., 30 Oct 2017, The 5th IEEE Workshop on Wide Bandgap Power Devices and Applications (WiPDA 2017). IEEE, p. 177-184

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
gallium nitrides
silicon
high electron mobility transistors
silicon oxides
metal oxide semiconductors

A content and language integrated learning (CLIL) project: Opportunities and challenges in the context of heritage language education

Charalampidi, M., Michael Hammond, K., Hammond, M., Hadjipavlou, N. & Lophitis, N., 2017, The European Conference on Language Learning 2017 Official Conference Proceedings. (European Conference on Language Learning, Conference Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

language education
language
learning
climate change
linguistics

A Content and Language Integrated Learning (CLIL) Project: Opportunities and Challenges in the Context of Heritage Language Education

Charalampidi, M., Hammond, M., Hadjipavlou, N. & Lophitis, N., 5 Sep 2017.

Research output: Contribution to conferencePaper

language education
language
learning
climate change
linguistics
1 Citation (Scopus)
11 Downloads (Pure)

Breakdown resistance analysis of traction motor winding insulation under thermal ageing

Gyftakis, K. N., Panagiotou, P. A., Lophitis, N., Howey, D. A. & McCulloch, M. D., 3 Nov 2017, 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017. Institute of Electrical and Electronics Engineers Inc., Vol. 2017-January. p. 5819-5825 7 p. 8096964

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
Traction motors
Thermal aging
Breakdown
Insulation
Thermal Stress
8 Downloads (Pure)

Breakdown Resistance Analysis of Traction Motor Winding Insulation under Thermal Ageing

Gyftakis, K. N., Panagiotou, P., Lophitis, N., Howey, D. A. & McCulloch, M. D., 1 Oct 2017.

Research output: Contribution to conferencePaper

Open Access
File
Traction motors
Thermal aging
Insulation
Thermal stress
Electric properties
1 Citation (Scopus)

Investigation of traction motor windings' insulation capacitance at switching frequencies under accelerated thermal stress

Panagiotou, P. A., Gyftakis, K. N., Lophitis, N., McCulloch, M. D. & Howey, D. A., 6 Oct 2017, Proceedings of the 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017. Institute of Electrical and Electronics Engineers Inc., Vol. 2017-January. p. 537-543 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Traction motors
Switching frequency
Thermal stress
Insulation
Capacitance

Investigation of Traction Motor Windings' Insulation Capacitance at Switching Frequencies under Accelerated Thermal Stress

Panagiotou, P., Gyftakis, K. N., Lophitis, N., McCulloch, M. D. & Howey, D. A., 2017, (Accepted/In press).

Research output: Contribution to conferencePaper

Traction motors
Switching frequency
Thermal stress
Insulation
Capacitance
7 Citations (Scopus)
38 Downloads (Pure)

On the Investigation of the “Anode Side” SuperJunction IGBT Design Concept

Antoniou, M., Lophitis, N., Udrea, F., Bauer, F., Vemulapati, U. R. & Badstuebner, U., Aug 2017, In : IEEE Electron Device Letters. 38, 8, p. 1063-1066 4 p.

Research output: Contribution to journalArticle

Open Access
File
Insulated gate bipolar transistors (IGBT)
Anodes
Cathodes
Fabrication
Thyristors
3 Citations (Scopus)
475 Downloads (Pure)

Physical parameterisation of 3C-Silicon Carbide (SiC) with scope to evaluate the suitability of the material for power diodes as an alternative to 4H-SiC

Arvanitopoulos, A., Belanche Guadas, M., Perkins, S., Lophitis, N., Gyftakis, K. N. & Antoniou, M., 6 Oct 2017, Proceedings of the 2017 IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017. IEEE, Vol. 2017-January. p. 565-571 7 p.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
Parameterization
Silicon carbide
Schottky barrier diodes
Computer aided design
Physical properties
19 Downloads (Pure)

Underpinning Power Electronics 2017 - Switch Optimisation Theme

Gammon, P. M., Mawby, P. A., Lophitis, N., Wright, N., O'Neil, A. & Udrea, F., Jul 2017.

Research output: Contribution to conferencePoster

Open Access
File
Insulated gate bipolar transistors (IGBT)
Power electronics
Silicon carbide
Switches
Fabrication
5 Citations (Scopus)
12 Downloads (Pure)

Validated physical models and parameters of bulk 3C-SiC aiming for credible Technology Computer Aided Design (TCAD) simulation

Arvanitopoulos, A., Lophitis, N., Gyftakis, K. N., Perkins, S. & Antoniou, M., 19 Sep 2017, In : Semiconductor Science and Technology. 32, 10, 104009.

Research output: Contribution to journalArticle

Open Access
File
2016
1 Citation (Scopus)
73 Downloads (Pure)

4.5 kV Bi-mode Gate Commutated Thyristor design with High Power Technology and shallow diode-anode

Lophitis, N., Antoniou, M., Udrea, F., Vemulapati, U., Arnold, M., Rahimo, M. & Vobecky, J., 28 Jul 2016, p. 371-374.

Research output: Contribution to conferencePaper

Open Access
File
Thyristors
Anodes
Diodes
18 Downloads (Pure)

High voltage semiconductor devices

Lophitis, N., Ward, P., Trajkovic, T. & Udrea, F., 23 Mar 2016, Patent No. GB2530284 (A)

Research output: Patent

Open Access
File
semiconductor devices
high voltages
conductivity
transistors
bipolar transistors
2 Citations (Scopus)
28 Downloads (Pure)

New Bi-Mode Gate-Commutated Thyristor Design Concept for High-Current Controllability and Low ON-State Voltage Drop

Lophitis, N., Antoniou, M., Vemulapati, U., Arnold, M., Nistor, I., Vobecky, J., Rahimo, M. & Udrea, F., 24 Feb 2016, In : IEEE Electron Device Letters. 37, 4, p. 467 - 470

Research output: Contribution to journalArticle

Open Access
File
Controllability
Thyristors
Failure analysis
Diodes
Temperature
29 Downloads (Pure)

REVERSE CONDUCTING POWER SEMICONDUCTOR DEVICE

Lophitis, N., Udrea, F., Vemulapati, U., Nistor, L., Arnold, M., Vobecky, J. & Rahimo, M., 29 Sep 2016, Patent No. US2016284708 (A1)

Research output: Patent

Open Access
File
semiconductor devices
conduction
cathodes
cells
diodes
167 Downloads (Pure)

Understanding Ageing in Li-ion Cells: an Enabler for Effective Grid Interaction Strategies

Stocker, R., Mumtaz, A. & Lophitis, N., 4 Nov 2016.

Research output: Contribution to conferencePoster

Open Access
File
Aging of materials
Ions
Energy storage
Control systems
Electric potential
2015
10 Citations (Scopus)

An experimental demonstration of a 4.5 kV “Bi-mode Gate Commutated Thyristor” (BGCT)

Vemulapati, U., Arnold, M., Rahimo, M., Vobecky, J., Stiasny, T., Lophitis, N. & Udrea, F., 2015, p. 109-112.

Research output: Contribution to conferencePaper

Open Access
Thyristors
Demonstrations
Diodes
Leakage currents
Anodes
11 Citations (Scopus)

Experimental demonstration of the p-ring FS+ Trench IGBT concept: A new design for minimizing the conduction losses

Antoniou, M., Lophitis, N., Udrea, F., Bauer, F., Nistor, I., Bellini, M. & Rahimo, M., 2015, p. 21-24.

Research output: Contribution to conferencePaper

conduction
rings
ratings
breakdown
augmentation
5 Citations (Scopus)
17 Downloads (Pure)

Improving Current Controllability in Bi-Mode Gate Commutated Thyristors

Lophitis, N., Antoniou, M., Udrea, F., Vemulapati, U., Arnold, M., Nistor, I., Vobecky, J. & Rahimo, M., 22 May 2015, In : Electron Devices. 62, 7, p. 2263 - 2269 7 p., 7112118.

Research output: Contribution to journalArticle

Open Access
File
Controllability
Thyristors
10 Citations (Scopus)
19 Downloads (Pure)

Novel Approach Toward Plasma Enhancement in Trench-Insulated Gate Bipolar Transistors

Antoniou, M., Lophitis, N., Bauer, F., Nistor, I., Bellini, M., Rahimo, M., Amaratunga, G. & Udrea, F., 15 May 2015, In : Electron device letters. 36, 8, p. 823-825 3 p.

Research output: Contribution to journalArticle

Open Access
File
Insulated gate bipolar transistors (IGBT)
Plasmas
Cathodes
2014
11 Citations (Scopus)

Parameters influencing the maximum controllable current in gate commutated thyristors

Lophitis, N., Antoniou, M., Udrea, F., Nistor, I., Arnold, M., Wikström, T. & Vobecky, J., May 2014, In : Circuits, Devices & Systems. 8, 3, p. 221-226

Research output: Contribution to journalArticle

Open Access
Thyristors
3 Citations (Scopus)
27 Downloads (Pure)

The Stripe Fortified GCT: A new GCT design for maximizing the controllable current

Lophitis, N., Antoniou, M., Udrea, F., Nistor, I., Wikstrom, T., Vobecky, J. & Rahimo, M., 17 Jul 2014, 2014 IEEE 26th International Symposium on Power Semiconductor Devices & IC's (ISPSD). IEEE, p. 123 - 126 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
Marketing
Servers
2013
4 Citations (Scopus)

Gate commutated thyristor with voltage independent maximum controllable current

Lophitis, N., Antoniou, M., Udrea, F., Nistor, I., Rahimo, M. T., Arnold, M., Wikstroem, T. & Vobecky, J., 2013, In : IEEE Electron Device Letters. 34, 8, p. 954-956 3 p., 6547666.

Research output: Contribution to journalArticle

Thyristors
Electric potential
Physics
17 Citations (Scopus)
10 Downloads (Pure)

The destruction mechanism in GCTs

Lophitis, N., Antoniou, M., Udrea, F., Bauer, F. D., Nistor, I., Arnold, M., Wikstrom, T. & Vobecky, J., 2013, In : Electron Devices. 60, 2, p. 819-826 8 p., 6410404.

Research output: Contribution to journalArticle

Open Access
File
Thyristors
2012
7 Citations (Scopus)
13 Downloads (Pure)

Experimentally validated three dimensional GCT wafer level simulations

Lophitis, N., Antoniou, M., Udrea, F., Nistor, I., Arnold, M., Wikström, T. & Vobecky, J., 2012, Proceedings of the 2012 24th International Symposium on Power Semiconductor Devices and ICs, ISPSD'12. IEEE, p. 349-352 4 p. 6229093

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
Thyristors
Phase control

Optimization of Parameters influencing the Maximum Controllable Current in Gate Commutated Thyristors

Lophitis, N., Antoniou, M., Udrea, F., Nistor, I., Arnold, M., Wikström, T. & Vobecky, J., 2012. 6 p.

Research output: Contribution to conferencePaper

Thyristors
2011
3 Citations (Scopus)
6 Downloads (Pure)

Turn-off failure mechanism in large area IGCTs

Lophitis, N., Antoniou, M., Udrea, F., Wikstrom, T. & Nistor, I., 2011, 2011 International Semiconductor Conference, CAS 2011 Proceedings. Vol. 2. p. 361-364 4 p. 6095817

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

Open Access
File
thyristors
Thyristors
destruction
wafers
current distribution