H. Abu-Rub

Texas A&M University at Qatar, Ad Dawḩah, Ad Dawḩah, Qatar

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Publications (105)82.68 Total impact

  • [show abstract] [hide abstract]
    ABSTRACT: This paper presents an experimental verification of the Improved Switched Inductor Z-Source Inverter (ISL-ZSI). The ISL-ZSI has been proposed to overcome the limitations of classical Z-Source Inverter (ZSI) such as lower voltage gain, higher capacitor voltage stress of Z-network and huge inrush current that appears in the case of traditional ZSI. In this paper, different aspects will be presented and analyzed such as the PWM control, relationships of voltage boosting gain versus modulation index, voltage stress versus modulation index and output voltage/current. Those important points will be analyzed in detail and verified by simulation and experimentally.
    The Applied Power Electronics Conference and Exposition, APEC (2014).; 03/2014
  • [show abstract] [hide abstract]
    ABSTRACT: This paper proposes a multiphase power generation with matrix converter for Wind Energy Conversion System (WECS). The proposed system consists of five-phase Permanent Magnet Synchronous Generator (PMSG), to generate five-phase voltage with variable amplitude and frequency. The grid is a threephase system and hence deployment of multiphase generator needs some sort of phase conversion system. Therefore, a five-to-three phase Direct Matrix Converter (DMC) is used to interface the fivephase PMSG with the grid. The choice of multiphase machine comes from the inherent advantages of multiphase machine such as higher output power, reduced phase’s losses, reduced sized for the same amount of output power compared to three phase generator. The proposed control strategy for the converter is Model Predictive Control (MPC). The proposed algorithm does the following functions: extract maximum power from the WECS, and ensures unity power factor at the grid terminal and machine terminal.
    IEEE International Conference on Industrial Technology (ICIT), Busan, Korea; 02/2014
  • Omar Ellabban, Gamal M. Dousoky, Haitham Abu-Rub
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    ABSTRACT: During the last few years, the partial resonant ac-link converters have gained a significant consideration due to their outstanding advantages. Compared to other types of power converters, these ac-link converters are compact in size, reliable, efficient, and they guaranty longer life time and bidirectional power flow. In addition to that, they can be used for dc/ac, ac/dc, ac/ac, or dc/dc applications with multi-phase and/or multi-port operation. Furthermore, they provide buck/boost operations. Due to these merits, this paper will provide an up-to-date review of such converters. Their principle of operation, control, topology modifications and applications will be presented.
    IEEE International Conference on Industrial Technology (ICIT), Busan, Korea; 02/2014
  • Omar Ellabban, haitham abu-rub
    [show abstract] [hide abstract]
    ABSTRACT: Switched reluctance motor (SRM) is on the focus of many researchers and it is becoming a proper alternative to conventional motors. This paper reviews the different power converter topologies developed for the SRM.
    EEE International Conference on Industrial Technology (ICIT), Busan, Korea; 02/2014
  • [show abstract] [hide abstract]
    ABSTRACT: This paper presents an approach to design a measurement-based controller for induction machines. The proposed control approach is motivated by the fact that developing an appropriate mechanical model of such induction machines is a challenging task. Since our proposed control methodology is only on the basis of measured data, the controller design does not require any information about the model of the mechanical part. The control of motor drive is often based on sensorless field-oriented control techniques because of their advantages such as noise and cost reductions and high reliability. Hence, we assume here that measurements used for the controller design are collected using an estimator based on the electrical equations of the induction machine. A practical application to control the speed of an induction machine is presented to validate and demonstrate the efficiency of the proposed method.
    Emerging and Selected Topics in Power Electronics, IEEE Journal of. 01/2014; 2(2):308-318.
  • Omar Ellabban, Haitham Abu-Rub, Baoming Ge
    [show abstract] [hide abstract]
    ABSTRACT: This paper proposes a novel four-quadrant vector controlled induction motor (IM) adjustable speed drive (ASD) system based on a recently proposed matrix converter topology called quasi-Z-source direct matrix converter (QZSDMC). The QZSDMC is formed by cascading the quasi-Z-source impedance network and the conventional direct matrix converter (DMC). The QZSDMC can provide buck-boost operation with voltage transfer ratio controlled by controlling the shoot-through duty ratio and bidirectional operation capability. The control strategy, which is based on the indirect field oriented control (IFOC) algorithm, is able to control the motor speed from zero to the rated value under full load condition during motoring and regenerating operation modes. The operating principle of the proposed system are presented in detail. The simulation and the real-time implementation results, using dSPACE 1103 ControlDesk, validate the high-performance of the proposed four-quadrants IM-ASD based on QZSDMC system. The proposed four-quadrant vector controlled IM-ASD system based on the QZSDMC topology overcomes the voltage gain limitation of the traditional DMC and achieves buck and boost condition in four-quadrant modes with reduced number of switches, therefore achieving low cost, high efficiency, and reliability, compared to back-to-back converter.
    IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS. 01/2014;
  • [show abstract] [hide abstract]
    ABSTRACT: Three existing and one extended space vector modulations (SVMs) for the three-phase Z-source/quasi-Z-source inverter (ZSI/qZSI) are investigated. The different switching control patterns, the available maximum shoot-through duty ratio, the maximum voltage stress across the switch versus voltage gain, and efficiency are compared in detail. A total average switch device power taking into account the shoot-through current stress is proposed to evaluate the total stress of power switches. Simulation and experimental results of the prototyped qZSI verify the theoretical analysis. The six parts of shoot-through time intervals will reduce the inductor current ripples, and improve the qZSI efficiency. Also, the maximum voltage stress and total average switch power will benefit from the shoot-through division. However, the division method impacts these performances of qZSI.
    IEEE Transactions on Power Electronics 01/2014; 29(4):2098-2108. · 4.08 Impact Factor
  • [show abstract] [hide abstract]
    ABSTRACT: An effective control method, including system-level control and pulsewidth modulation for quasi-Z-source cascade multilevel inverter (qZS-CMI) based grid-tie photovoltaic (PV) power system is proposed. The system-level control achieves the grid-tie current injection, independent maximum power point tracking (MPPT) for separate PV panels, and dc-link voltage balance for all quasi-Z-source H-bridge inverter (qZS-HBI) modules. The complete design process is disclosed. A multilevel space vector modulation (SVM) for the single-phase qZS-CMI is proposed to fulfill the synthetization of the step-like voltage waveforms. Simulation and experiment based on a seven-level prototype are carried out to validate the proposed methods.
    IEEE Transactions on Industrial Informatics 01/2014; 10(1):399-407. · 3.38 Impact Factor
  • [show abstract] [hide abstract]
    ABSTRACT: The quasi-Z source inverter (qZSI) with battery can balance the stochastic fluctuations of photovoltaic (PV) power injected to the grid/load, but its existing topology has a power limitation due to the wide range of discontinuous conduction mode during battery discharge. For an energy stored qZSI, traditional control methods cannot ensure a constant dc-link peak voltage because of battery's voltage clamp. This paper proposes a novel energy stored qZSI-based PV power system with constant dc-link peak voltage to overcome the above demerits. The new topology of energy stored qZSI is employed to improve the power compensation ability of existing topology, new constant dc-link peak voltage control and load related maximum power point tracking are proposed, and the whole system is analyzed in detail. Experimental results verify the theoretical analysis and the proposed energy stored qZSI-based PV power system.
    IEEE Transactions on Sustainable Energy 01/2014; 5(1):28-36.
  • Omar Abdel-Rahim, Hirohito Funato, Haitham Abu-Rub
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    ABSTRACT: This paper proposes a multiphase power generation with matrix converter for Wind Energy Conversion System (WECS). The proposed system consists of five-phase Permanent Magnet Synchronous Generator (PMSG), to generate five-phase voltage with variable amplitude and frequency. The grid is a three-phase system and hence deployment of multiphase generator needs some sort of phase conversion system. Therefore, a five-to-three phase Direct Matrix Converter (DMC) is used to interface the five-phase PMSG with the grid. The choice of multiphase machine comes from the inherent advantages of multiphase machine such as higher output power, reduced phase’s losses, reduced sized for the same amount of output power compared to three phase generator. The proposed control strategy for the converter is Model Predictive Control (MPC). The proposed algorithm does the following functions: extract maximum power from the WECS, and ensures unity power factor at the grid terminal and machine terminal.
    2014 IEEE International Conference on Industrial Technology ICIT, Korea; 01/2014
  • Omar Ellabban, Haitham Abu-Rub
    [show abstract] [hide abstract]
    ABSTRACT: Switched reluctance motor (SRM) is on the focus of many researchers and it is becoming a proper alternative to conventional motors, because of its unique advantages. This paper presents a review for different torque control techniques of the SRM.
    The 7th IEEE GCC conference and exhibition; 11/2013
  • Omar Ellabban, Haitham Abu-Rub
    [show abstract] [hide abstract]
    ABSTRACT: This paper proposes a new four-quadrant adjustable speed drive (ASD) system based on an induction motor fed by a three-phase quasi-Z-source direct matrix converter (QZSDMC). The quasi-Z-source (QZS) network is used to overcome the limitation of the voltage gain of the traditional direct matrix converter (DMC). The QZSDMC can provide a buck-boost operation by controlling the shoot-through (ST) duty ratio. In addition, this paper presents a four-quadrant speed control method based on the indirect field oriented control (IFOC) technique which is able to change the motor speed from zero to the rated speed with the full load torque during motoring and regenerating operation modes. The simulation results validate the proposed QZSDMC based adjustable speed drive system. The proposed ASD system overcomes the voltage gain limitation of the traditional direct matrix converter with improved efficiency and higher readability compared to the traditional back-to-back converter configuration.
    The 39th Annual Conference of the IEEE Industrial Electronics Society,, Vienna, Austria; 11/2013
  • Omar Ellabban, Haitham Abu-Rub, José Rodríguez
    [show abstract] [hide abstract]
    ABSTRACT: In this paper, a predictive torque control (PTC) algorithm is introduced for controlling an induction motor (IM) fed by a bidirectional quasi Z-source inverter (BQZSI). A torque, stator flux and capacitor voltage magnitudes control algorithm evaluates a cost function, based on a simple discrete models of the IM and the BQZSI, for each BQZSI available switching state. The voltage vector with the lowest torque, a stator flux and capacitor voltage magnitude errors is selected to be applied in the next sampling interval. The proposed PTC algorithm, with its single structure, can control both sides of the BQZSI to optimize the motor performance with an extremely simple and versatile control algorithm and without any dynamic response limitation caused by the cascaded control structure. A high degree of flexibility is obtained with the proposed control technique due its online optimization algorithm. This paper proposed a new adjustable speed drive system based on a three-phase BQZSI feeding an induction motor. Where, the interesting advantages of the PTC algorithm are combined by the advantages of one of the most interesting power electronics converters, the BQZSI. Simulation results for a 4 kW IM are presented to validate the new proposed electrical drive system.
    The 39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013, Vienna, Austria; 11/2013
  • Omar Ellabban, Haitham Abu-Rub
    [show abstract] [hide abstract]
    ABSTRACT: This paper proposes a new three-phase ac-ac converter topology based on the Z-source concept and the conventional direct matrix converter (DMC), it is called quasi-Z-Source direct matrix converter (QZSDMC). It could provide buck-boost function and make the role of frequency changer. Compared with the traditional ac-dc-ac converter, it uses fewer devices and realizes direct ac-ac power conversion, so as to have higher efficiency and better circuit characteristics. Compared with the traditional direct matrix converter, it provides wider voltage regulation range and improves input-output voltage transformation ratio. The proposed converter is tested as a grid connected converter for interfacing renewable energy sources. The circuit topology, operating principle, control method and simulation results are given to verify the feasibility of the proposed converter.
    The 39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013, Vienna, Austria; 11/2013
  • Sk Moin Ahmed, Haitham Abu-Rub, Omar Ellabban
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    ABSTRACT: This paper proposes a novel three-to-five phase bi directional partial resonant AC Link converter. The converter has three phase input with five phase output operating at variable voltage and variable frequency. The proposed topology uses two bi-directional switches for each leg of the converter resulting in a total of 16 switches. The high frequency charging and discharging of the link inductor is the main criteria for power transfer from input to output. In each cycle a small interval is allocated for resonances which enables the switches for soft zero voltage turn on and turn off. The converter has the ability for buck and boost operation. This paper proposes the basic control algorithm by considering only the large vectors of this converter topology. Simulation and real-time results are shown for the verification of the proposed converter.
    39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013; 11/2013
  • Source
    Moin SK. A., H. Abu-Rub, A. Kouzou
    [show abstract] [hide abstract]
    ABSTRACT: The paper proposes a novel control strategy to control active and reactive power simultaneously in addition to the source and load current using predictive approach. The proposed method selects the actuation states of the matrix converter according to the optimization algorithm of the cost function. The proposed cost function considers the active and reactive input power control to facilitate the control of source side power factor. Additionally source and load side currents are controlled to be sinusoidal. The proposed control approach offer extremely good tracking of the reference and actual source and load current and can control the source side power factor to any value. The analytical and simulation approach is adopted in the paper.
    ICPEA 2013, 1st. International Conference on Power Electronics and their Applications, Djelfa, Algeria; 11/2013
  • [show abstract] [hide abstract]
    ABSTRACT: This paper proposes the space vector pulse width modulation technique of a matrix converter topology with three phase fixed grid input and seven phase variable voltage variable frequency output. Voltage source inverter is generally used for feeding multi-phase drives. Multi-phase matrix converter is proposed in this paper as a new solution for feeding multi phase system. The paper develops the complete space vector algorithm of the proposed multi-phase matrix converter topology. The developed space vector model suggests 221 possible switching combination vectors. After imposing mathematical constraints the number of switching combinations reduce to 2184 active and three zero vectors. The complete space vector PWM algorithm is developed in the paper. The feasibility of the proposed algorithm is proved using analytical, simulation and real-time approach.
    39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013 -, Vienna , Austiria; 11/2013
  • [show abstract] [hide abstract]
    ABSTRACT: SUMMARY A new type of three-phase quasi-Z-source indirect matrix converter (QZS-IMC) is proposed in this paper. It uses a unique impedance network for achieving voltage-boost capability and making the input current in continuous conduction mode (CCM) to eliminate the input filter. The complete modulation strategy is proposed to operate the QZS-IMC. Meanwhile, a closed-loop DC-link peak voltage control strategy is proposed, and the DC-link peak voltage is estimated by measuring both the input and capacitor voltages. With this proposed technique, a high-performance output voltage control can be achieved with an excellent transient performance even if there are input voltage and load current variations. The controller is designed by using the small-signal model. Vector control scheme of the induction motor is combined with the QZS-IMC to achieve the motor drive. A QZS-IMC prototype is built in laboratory, and experimental results verify the operating principle and theoretical analysis of the proposed converter. The simulation tests of QZS-IMC based inductor motor drive are carried out to validate the proposed converter's application in motor drive. Copyright © 2013 John Wiley & Sons, Ltd.
    International Journal of Circuit Theory and Applications 10/2013; · 1.29 Impact Factor
  • Source
    Omar Abdel-Rahim, Haitham Abu-Rub, Abdallah Kouzou
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    ABSTRACT: The power conversion from variable AC voltage into a desired AC voltage with fixed magnitude and fixed frequency is attracting more attention especially in case of grid-connected wind generation system. Indeed, the Direct Matrix Converter (DMC) can be used as a suitable solution for such AC/AC conversion to fulfill the requirement of the output voltage with desired magnitude and frequency. Nine to three phase matrix converter developed in this paper is proposed to ensure the conversion of nine-phase input voltage into three-phase voltage, the output current magnitude and frequency control and the input current power factor control. Among the existing control techniques, The Model Predictive Control (MPC) is considered to be one of the most effective control techniques. In this paper MPC is used to control the twenty-seven switches used in the topology of the nine-to-three phase matrix converters, where the main aim is to achieve principal control functions such as, the output current magnitude and frequency control and input current control to ensure a reduced shift phase, hence a nearly unity power factor in the input side of the DMC.
    Mediterranean Green Energy Forum (MGEF); 09/2013
  • Omar Abdel-Rahim, Haitham Abu-Rub, Atif Iqbl
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    ABSTRACT: Conversion from variable ac voltage into fixed voltage and fixed frequency ac voltage is essential especially in case of grid-connected wind generation system. Direct matrix Converter (DMC) provides a solution for such ac/ac conversion for desired voltage and frequency. Five to three phase matrix converter developed in this paper is proposed to convert five- phase input voltage into three-phase voltage, control the amplitude of the output current and its frequency and also control input current power factor to be near unity with the supply voltage. Among the existing control techniques, Model Predictive Control (MPC) is considered one of the most effective control techniques. In this paper MPC is used to control the fifteen switches of the five-to-three phase matrix converters. MPC is employed to achieve the following control functions: control the output current amplitude, shape and frequency and control input current to be in phase with the supply voltage (unity power factor). The algorithm used for MPC in this paper has the advantages of no need for weighting factor. Matlab/Simulink Simulation of the proposed control system is provided including their real time validation.
    POWERENG; 05/2013

Publication Stats

415 Citations
82.68 Total Impact Points

Institutions

  • 2007–2013
    • Texas A&M University at Qatar
      Ad Dawḩah, Ad Dawḩah, Qatar
  • 2003–2011
    • Gdansk University of Technology
      • Faculty of Electrical and Control Engineering
      Gdańsk, Pomeranian Voivodeship, Poland
  • 2010
    • Beijing Jiaotong University
      • School of Electrical Engineering
      Beijing, Beijing Shi, China
  • 2009–2010
    • Universidad Técnica Federico Santa María
      • Department of Electronics
      Valparaíso, Region de Valparaiso, Chile
  • 2008
    • Friedrich-Alexander Universität Erlangen-Nürnberg
      Erlangen, Bavaria, Germany
  • 2003–2004
    • Birzeit University
      • Department of Electrical Engineering
      Al Bīrah, WE, Palestinian Territory
  • 2001–2004
    • Texas A&M University
      • Department of Electrical and Computer Engineering
      College Station, TX, United States