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Recent Submissions

  • Design and implementation of 30kW 200/900v LCL modular multilevel based DC/DC converter for high power applications. 

    Fazeli, S. M.; Aboushady, Ahmed A.; Ahmed, Khaled H.; Jovcic, Dragan (IET http://dx.doi.org/10.1049/cp.2016.0144, 2016-04-19)
    FAZELI, S.M., ABOUSHADY, A.A., AHMED, K.H. and JOVCIC, D. 2016. Design and implementation of 30kW 200/900v LCL modular multilevel based DC/DC converter for high power applications. In the Proceedings of the 8th IET international conference on power electronics, machines and drives, 19-21 April 2016, Glasgow, UK. New York: IET [online]. Available from: http://dx.doi.org/10.1049/cp.2016.0144
    This paper presents the design, development and testing of a 30kW, 200V/900V modular multilevel converter (MMC) based DC/DC converter prototype. An internal LCL circuit is used to provide voltage stepping and fault tolerance ...
  • DC fault isolation study of bidirectional dual active bridge DC/DC converter for DC transmission grid application. 

    Harrye, Yasen A.; Ahmed, Khaled H.; Aboushady, Ahmed A. (IEEE https://dx.doi.org/10.1109/IECON.2015.7392592, 2015-11-09)
    HARRYE, Y.A., AHMED, K.H. and ABOUSHADY, A.A. 2015. DC fault isolation study of bidirectional dual active bridge DC/DC converter for DC transmission grid application. In the Proceedings of the 41st annual conference of the IEEE industrial electronics society (IECON 2015), 9-12 November 2015, Yokohama, Japan. New York: IEEE [online], pages 003193-003198. Available from: https://dx.doi.org/10.1109/IECON.2015.7392592.
    Fast isolation and detection of DC faults is currently a limiting factor in high power DC transmission grid development. Recent research has shown that the role of DC/DC converters is becoming increasingly important in ...
  • Modular multilevel converter based LCL DC/DC converter for high power DC transmission grids. 

    Aboushady, Ahmed A.; Ahmed, Khaled H.; Jovcic, Dragan (EPE 2015 ECCE Europe (Organisers), 2015-09-08)
    ABOUSHADY, A.A., AHMED, K.H. and JOVCIC, D. 2015. Modular multilevel converter based LCL DC/DC converter for high power DC transmission grids. In the Proceedings of the 17th European conference on power electronics and applications (EPE 2015 ECCE Europe), 8-10 September 2015, Geneva, Switzerland.
    This paper presents a modular multilevel converter (MMC) based DC/DC converter with LCL inner circuit for HVDC transmission and DC grids. Three main design challenges are addressed. The first challenge is the use of MMCs ...
  • Analysis and hardware testing of cell capacitor discharge currents during DC faults in half-bridge modular multilevel converters. 

    Aboushady, Ahmed A.; Ahmed, Khaled H.; Jovcic, Dragan (IEEE https://dx.doi.org/10.1049/cp.2015.0010, 2015-02-10)
    ABOUSHADY, A.A., AHMED, K.H. and JOVCIC, D. 2015. Analysis and hardware testing of cell capacitor discharge currents during DC faults in half-bridge modular multilevel converters. In the Proceedings of the 11th international conference on AC and DC power transmission, 10-12 February 2015, Birminham, UK. New York: IEEE [online], pages 1-7. Available from: https://dx.doi.org/10.1049/cp.2015.0010
    This paper focuses on the behaviour of the cell capacitor discharge currents during DC faults in half-bridge modular multilevel converters. Active switches, not designed for fault conditions, are tripped to minimize discharge ...
  • Modified half-bridge modular multilevel converter for HVDC systems with DC fault ride-through capability. 

    Ahmed, Khaled H.; Aboushady, Ahmed A. (IEEE https://dx.doi.org/10.1109/IECON.2014.7049207, 2014-10-30)
    AHMED, K.H. and ABOUSHADY, A.A. 2014. Modified half-bridge modular multilevel converter for HVDC systems with DC fault ride-through capability. In the Proceedings of the 40th annual conference of the IEEE industrial electronics society (IECON 2014), 30 October - 1 November 2014, Dallas, USA. New York: IEEE [online], pages 4676-4682. Available from: https://dx.doi.org/10.1109/IECON.2014.7049207.
    One of the main challenges of voltage source converter based HVDC systems is DC faults. In this paper, two different modified half-bridge modular multilevel converter topologies are proposed. The proposed converters offer ...
  • Sensorless multi-loop control of phase-controlled series-parallel resonant converter. 

    Aboushady, Ahmed A.; Ahmed, Khaled H. (IEEE https://dx.doi.org/10.1109/ICRERA.2014.7016435, 2014-10-19)
    ABOUSHADY, A.A. and AHMED, K.H. 2014. Sensorless multi-loop control of phase-controlled series-parallel resonant converter. In the Proceedings of the 3rd international conference on renewable energy research and applications (ICRERA 2014), 19-22 October 2014, Milwaukee, USA. New York: IEEE [online], pages 502-507. Available from: https://dx.doi.org/10.1109/ICRERA.2014.7016435.
    This paper proposes a multi-loop controller for the phase-controlled series-parallel resonant converter. Output voltage is solely measured for control and inner loop is used to enhance closed loop stability and dynamic ...
  • Reactive power minimization of dual active bridge DC/DC converter with triple phase shift control using open loop neural network. 

    Harrye, Yasen A.; Ahmed, Khaled H.; Aboushady, Ahmed A. (IEEE https://dx.doi.org/10.1109/ICRERA.2014.7016448, 2014-10-19)
    HARRYE, Y.A., AHMED, K.H. and ABOUSHADY, A.A. 2014. Reactive power minimization of dual active bridge DC/DC converter with triple phase shift control using neural network. In the Proceedings of the 3rd international conference on renewable energy research and applications (ICRERA 2014), 19-22 October 2014, Milwaukee, USA. New York: IEEE [online], pages 566-571. Available from: https://dx.doi.org/10.1109/ICRERA.2014.7016448
    Reactive power flow increases dual active bridge (DAB) converter RMS current leading to an increase in conduction losses especially in high power applications. This paper proposes a new optimized triple phase shift (TPS) ...
  • Comprehensive steady state analysis of bidirectional dual active bridge DC/DC converter using triple phase shift control. 

    Harrye, Yasen A.; Ahmed, Khaled H.; Adam, G. P.; Aboushady, Ahmed A. (IEEE https://dx.doi.org/10.1109/ISIE.2014.6864653, 2014-06-01)
    HARRYE, Y.A., AHMED, K.H., ADAM, G.P. and ABOUSHADY, A.A. 2014. Comprehensive steady state analysis of bidirectional dual active bridge DC/DC converter using triple phase shift control. In the Proceedings of the 23rd International symposium on industrial electronics (ISIE 2014), 1-4 June 2014, Istanbul, Turkey. New York: IEEE [online], pages 437-442. Available from: https://dx.doi.org/10.1109/ISIE.2014.6864653
    Several papers have been published recently on TPS control of dual active bridge (DAB) converter, however, no complete study of the converter operation behaviour exists, that takes into account all switching modes in both ...
  • Shrinkage behaviour of SFRC industrial ground floors. 

    Jafarifar, Naeimeh; Sabbagh, Alireza Bagheri (University of Aberdeen, 2015-08-26)
    JAFARIFAR, N. and SABBAGH, A.B. 2015. Shrinkage behaviour of SFRC industrial ground floors. In the Proceedings of the 35th Cement and concrete science conference (CCSC35), 26-28 August 2015, Aberdeen, UK.
    Restrained shrinkage is an important issue in design of concrete industrial ground floors, although it is often overlooked. This paper studies shrinkage behaviour of a SFRC floor subjected to static racking load, through ...
  • Modelling the effect of applied voltage and frequency on electroluminescence in polymeric material. 

    Bani, Nurul Aini; Abdul-Malek, Z.; Muhammad-Sukki, Firdaus; Abubakar Mas'ud, A.; Muhtazaruddin, M. N.; Kamardin, K.; Jamian, J. J.; Ahmad, H. (Institute of advanced engineering and science https://dx.doi.org/10.11591/ijece.v6i3.9573, 2016-06-01)
    BANI, N.A., ABDUL-MALEK, Z., MUHAMMAD-SUKKI, F., MASUD, A.A., MUHTAZARUDDIN, M.N., KAMARDIN, K., JAMIAN, J.J. and AHMAD, H. 2016. Modelling the effect of applied voltage and frequency on electroluminescence in polymeric material. International journal of electrical and computer engineering [online], 6(3), pages 1375-1384. Available from: https://dx.doi.org/10.11591/ijece.v6i3.9573
    Electroluminescence method has been used by several researchers to observe the behaviour of an aged polymeric material. Electroluminescence is a phenomenon that occurs when the atoms of a material are being excited due to ...
  • Monitoring acoustic emission (AE) energy of abrasive particle impacts in a slurry flow loop using a statistical distribution model. 

    Droubi, M. Ghazi; Reuben, R. L. (Elsevier http://dx.doi.org/10.1016/j.apacoust.2016.06.026, 2016-07-05)
    DROUBI, M.G. and REUBEN, R.L. 2016. Monitoring acoustic emission (AE) energy of abrasive particle impacts in a slurry flow loop using a statistical distribution model. Applied acoustics [online], 133, pages 202-209. Available from: http://dx.doi.org/10.1016/j.apacoust.2016.06.026
    Slurry erosion has been recognized as a serious problem in many industrial applications. In slurry flows, the estimation of the amount of incident kinetic energy that transmits from particles suspended in the fluid to the ...
  • Classifying Arabic text using KNN classifier. 

    Al-Badarenah, Amer; Al-Shawakfa, Emad; Al-Rababah, Khaleel; Shatnawi, Safwan; Bani-Ismail, Basel (SAI Organization http://dx.doi.org/10.14569/IJACSA.2016.070633, 2016-07-01)
    AL-BADARENAH, A., AL-SHAWAKFA, E., AL-RABABAH, K., SHATNAWI, S. and BANI-ISMAIL, B. 2016. Classifying Arabic text using KNN classifier. International journal of advanced computer science and applications [online], 7(6). Available from: http://dx.doi.org/10.14569/IJACSA.2016.070633
    With the tremendous amount of electronic documents available, there is a great need to classify documents automatically. Classification is the task of assigning objects (images, text documents, etc.) to one of several ...
  • Optimal resource allocation in wireless-powered OFDM relay networks. 

    Huang, Gaofei; Tu, Wanqing (Elsevier https://dx.doi.org/10.1016/j.comnet.2016.05.006, 2016-05-11)
    HUANG, G. and TU, W. 2016. Optimal resource allocation in wireless-powered OFDM relay networks. Computer networks [online], 104, pages 94-107. Available from: https://dx.doi.org/10.1016/j.comnet.2016.05.006.
    This paper studies resource allocation in wireless-powered orthogonal-frequency-division multiplexing (OFDM) amplify-and-forward (AF) or decode-and-forward (DF) relay networks with time-switching (TS) based relaying. Our ...
  • VOC oxidation in excess of oxygen using flow-through catalytic membrane reactor. 

    Kajama, Mohammed; Shehu, Habiba; Okon, Edidiong; Orakwe, Ify; Gobina, Edward (Elsevier https://dx.doi.org/10.1016/j.ijhydene.2016.04.164, 2016-06-17)
    KAJAMA, M.N., SHEHU, H., OKON, E., ORAKWE, I. and GOBINA, E. 2016. VOC oxidation in excess of oxygen using flow-through catalytic membrane reactor. International journal of hydrogen energy [online], In Press. Available from: https://dx.doi.org/10.1016/j.ijhydene.2016.04.164
    Platinum gamma-alumina (Pt/γ-Al2O3) impregnated membrane was prepared through the evaporative-crystallization deposition method for volatile organic compounds (VOCs) conversion to carbon dioxide (CO2) and water (H2O). The ...
  • Software simulation and experimental characterisation of a rotationally asymmetrical concentrator under direct and diffuse solar radiation. 

    Freier, Daria; Muhammad-Sukki, Firdaus; Abu-Bakar, Siti Hawa; Ramirez-Iniguez, Roberto; Abubakar Mas'ud, A.; Albarracin, Ricardo; Ardila-Rey, Jorge Alfredo; Munir, Abu Bakar; Yasin, Siti Hajar Mohd; Bani, Nurul Aini (Elsevier http://dx.doi.org/10.1016/j.enconman.2016.05.072, 2016-06-01)
    FREIER, D., MUHAMMAD-SUKKI, F., ABU-BAKAR, S.H., RAMIREZ-INIGUEZ, R., ABUBAKAR MAS’UD, A., ALBARRACIN, R., ARDILA-REY, J.A., MUNIR, A.B., YASIN, S.H.M. and BANI, N.A. 2016. Software simulation and experimental characterisation of a rotationally asymmetrical concentrator under direct and diffuse solar radiation. Energy conversion and management [online], 122, pages 223-238. Available from: http://dx.doi.org/10.1016/j.enconman.2016.05.072
    Making housing carbon neutral is one of the European Union (EU) targets with the aim to reduce energy consumption and to increase on-site renewable energy generation in the domestic sector. Optical concentrators have a ...
  • Efficient wireless multimedia multicast in multi-rate multi-channel mesh networks. 

    Tu, Wanqing (IEEE http://dx.doi.org/10.1109/TSIPN.2016.2550806, 2016-04-05)
    TU, W. 2016. Efficient wireless multimedia multicast in multi-rate multi-channel mesh networks. IEEE transactions on signal and information processing over networks [online], Early Access. Available from: http://dx.doi.org/10.1109/TSIPN.2016.2550806
    Devices in wireless mesh networks can operate on multiple channels and automatically adjust their transmission rates for the occupied channels. This paper shows how to improve performance-guaranteed multicasting transmission ...
  • Region-based memetic algorithm with archive for multimodal optimsation. 

    Lacroix, Benjamin; Molina, Daniel; Herrera, Francisco (Elsevier https://dx.doi.org/10.1016/j.ins.2016.05.049, 2016-06-02)
    LACROIX, B., MOLINA, D. and HERRERA, F. 2016. Region-based memetic algorithm with archive for multimodal optimsation. Information sciences [online], 367-368, pages 719-746. Available from: https://dx.doi.org/10.1016/j.ins.2016.05.049
    In this paper we propose a specially designed memetic algorithm for multimodal optimisation problems. The proposal uses a niching strategy, called region-based niching strategy, that divides the search space in predefined ...
  • Hidden chaotic attractors in a class of two-dimensional maps. 

    Jiang, Haibo; Liu, Yang; Wei, Zhouchao; Zhang, Liping (Springer http://dx.doi.org/10.1007/s11071-016-2857-3, 2016-05-31)
    JIANG, H., LIU. Y., WEI, Z. and ZHANG, L. 2016. Hidden chaotic attractors in a class of two-dimensional maps. Nonlinear dynamics [online], (accepted). Available from: https://dx.doi.org/10.1007/s11071-016-2857-3
    This paper studies the hidden dynamics of a class of two-dimensional maps inspired by the Hénon map. A special consideration is made to the existence of fixed points and their stabilities in these maps. Our concern focuses ...
  • Early fusion and query modification in their dual late fusion form. 

    Kaliciak, Leszek; Myrhaug, Hans; Goker, Ayse; Song, Dawei (International Society of Information Fusion http://isif.org/publications/jaif-articles-appear-future-issue, 2015-10-28)
    KALICIAK, L., MYRHAUG, H., GOKER, A. and SONG, D. 2016. Early fusion and query modification in their dual late fusion forms. Journal of advances in information fusion [online], Articles to Appear in a Future Issue. Available from: http://isif.org/publications/jaif-articles-appear-future-issue
    In this paper, we prove that specific widely used models in Content-based Image Retrieval for information fusion are interchangeable. In addition, we show that even advanced, non-standard fusion strategies can be represented ...
  • The effect of shrinkage cracks on the load bearing capacity of steel-fibre-reinforced roller-compacted-concrete pavements. 

    Jafarifar, Naeimeh; Pilakoutas, Kypros; Bennett, Terry (Springer https://dx.doi.org/10.1617/s11527-015-0652-0, 2015-06-25)
    JAFARIFAR, N., PILAKOUTAS, K. and BENNETT, T. 2015. The effect of shrinkage cracks on the load bearing capacity of steel-fibre-reinforced roller-compacted-concrete pavements. Materials and structues [online], 49(6), pages 2329-2347. Available from: https://dx.doi.org/10.1617/s11527-015-0652-0
    This paper demonstrates the effect of shrinkage cracks on the static load bearing capacity and on the fatigue performance of RCC pavements reinforced with steel fibres recycled from post-consumer tyres, with the aid of a ...

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