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Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239)

19-22 Aug. 2001

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  • IEEE Region 10 International Conference On Electrical And Electronic Technology [front matter]

    Publication Year: 2001, Page(s):i - xvi
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    Freely Available from IEEE
  • Author index

    Publication Year: 2001, Page(s):907 - 909
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    Freely Available from IEEE
  • An APF with MAPPT scheme to improve power quality

    Publication Year: 2001, Page(s):620 - 626 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (375 KB) | HTML iconHTML

    This paper presents design and implementation of an active power filter (APF) with a minimum apparent power point tracking (MAPPT) scheme to improve power quality under distorted input voltage. The proposed APF with an MAPPT scheme can further improve the power quality over that of a conventional zero-crossing detection method. The main idea of the proposed scheme is to keep on shifting the filter... View full abstract»

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  • Neural network control for damping of multi-mode oscillations in a power system

    Publication Year: 2001, Page(s):658 - 663 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB) | HTML iconHTML

    A neural network-based control scheme, in conjunction with a coherency recognition technique, is proposed for enhancing the damping characteristics of multi-machine power systems. From the simulation results obtained, it is shown that the proposed control scheme is suitable for damping multi-mode oscillations in a 10-machine power system and performs better than a conventional control scheme View full abstract»

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  • Evaluation of lamination materials in zero-speed sensorless controlled induction machine drives

    Publication Year: 2001, Page(s):613 - 619 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (610 KB) | HTML iconHTML

    Control of induction machines without mechanical sensors has gained more and more interest in the past years. Different methods for sensorless control have been proposed in literature recently. The performance of methods, which are based on fundamental wave models of the machine deteriorate at low frequency. To guarantee a stable operation, even at zero fundamental electrical frequency, it is thus... View full abstract»

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  • A new variable structure controller incorporating actuator dynamics

    Publication Year: 2001, Page(s):654 - 657 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (279 KB) | HTML iconHTML

    In this paper, the design of variable structure control systems is presented with incorporation of the dynamics of an actuator. The VSS controller design is formulated, including the dynamics of the actuator expressed as a state equation. An example is given to show the effectiveness of the developed algorithm View full abstract»

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  • A novel estimation of phase currents from DC link for permanent magnet AC motors

    Publication Year: 2001, Page(s):606 - 612 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (579 KB) | HTML iconHTML

    This paper proposes a novel three-phase current reconstruction technique that utilises the measured DC link current and the switching signals of the inverter. The method is based on an adaptive current observer, which uses the computer model of the motor drive to determine all possible inverter conditions that are not measurable and reconstructs the phase currents accurately. A wide range of exper... View full abstract»

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  • A current-sharing control strategy for paralleled multi-inverter systems using microprocessor-based robust control

    Publication Year: 2001, Page(s):647 - 653 vol.2
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (543 KB) | HTML iconHTML

    A current-sharing control strategy for paralleled multi-inverter systems using microprocessor-based robust control is presented in this paper. With an averaged current-sharing control (ACSC) strategy, the inverters are in parallel connection and each inverter has a voltage robust controller to achieve system stability and robustness, and a current robust controller to track the averaged inductor c... View full abstract»

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  • A single-phase bidirectional rectifier with power factor correction

    Publication Year: 2001, Page(s):601 - 605 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB) | HTML iconHTML

    A single-phase rectifier based on the conventional two-level full-bridge rectifier and one AC power switch is proposed. The voltage stress of the full-bridge rectifier is equal to the DC bus voltage, but the AC power switch has a voltage rating of half the DC-link voltage. The control signals of the rectifier switches are derived from the voltage balance compensator, current controller and detecte... View full abstract»

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  • Listless zerotree coding using raster tree search

    Publication Year: 2001, Page(s):514 - 518 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (812 KB) | HTML iconHTML

    Previously, we have proposed a very simple zerotree coding algorithm called listless zerotree coding (LZC) whose coding memory requirement is significantly lower than that of SPIHT. In common with SPIHT, LZC performs a recursive tree search that is likely to discard some important coefficients when the bit rate is low. Therefore, we propose a new LZC algorithm that uses a raster tree search to min... View full abstract»

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  • An optical fiber feeder system and performance for cellular microcell 800 MHz CDMA systems

    Publication Year: 2001, Page(s):783 - 785 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (189 KB) | HTML iconHTML

    This paper proposes an optical fiber feeder system for use in cellular microcell 800 MHz CDMA systems, as well as its performance. The RF signal of the CDMA system is converted into the optical signal, which can be delivered in the optical fiber. We analyze the system performance in terms of CNR (carrier to noise ratio) and SER (symbol error rate) using theoretical modeling as well as numerically ... View full abstract»

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  • Robustness issues in digital compensation for IQ modulators

    Publication Year: 2001, Page(s):641 - 646 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (395 KB) | HTML iconHTML

    A flexible approach to the implementation of a radio transmitter is to synthesise base-band I and Q signals using a DSP (digital signal processor) followed by a vector modulator to up-convert the base-band signals directly to RF. This approach can be limited, however, by analogue reconstruction filters that are necessary to remove digital image components from the baseband signal spectrum before t... View full abstract»

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  • The profile lining-cutting robot system based on offline program

    Publication Year: 2001, Page(s):597 - 600 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (578 KB) | HTML iconHTML

    The paper introduces a new type of lining and cutting system: the profile lining-cutting robot system based on offline program. The system adopts a modular design method, which makes the huge system's hierarchy clear and makes the system easy to design and repair. The system adopts the offline program technology without teach, and it can measure and compensate every profile's deformation automatic... View full abstract»

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  • High-power factor rectifier based on neutral point clamped scheme

    Publication Year: 2001, Page(s):556 - 560 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (325 KB) | HTML iconHTML

    A high power factor rectifier based on neutral point clamped scheme is proposed. The voltage stress of each power semiconductor of the adopted rectifier is equal to the half DC bus voltage instead of full DC link voltage in the conventional switching mode rectifier. The control signals of the rectifier switches are derived from the DC link voltage balance compensator, fine current controller and D... View full abstract»

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  • An adaptive audio watermarking system

    Publication Year: 2001, Page(s):509 - 513 vol.2
    Cited by:  Papers (12)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB) | HTML iconHTML

    An adaptive and content-based audio watermarking system based on echo hiding is presented. The proposed system aims to overcome the problems of audible echoes in a simple echo hiding approach. Audibility of echoes is reduced especially for problematic signals by the application of signal-based attenuation, psycho-acoustic model and perceptual filter to adaptively modify the decay rate used in enco... View full abstract»

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  • Trends and issues in data transport over optical networks

    Publication Year: 2001, Page(s):580 - 583 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (275 KB) | HTML iconHTML

    The paper discusses the shortcomings of current day networks in transporting exponentially increasing data traffic. Bursty and unpredictable characteristics of data traffic would need thorough overhauling of existing networks. An all optical network architecture is envisaged for the future with electrical elements only in the access feeds. Various issues, techniques and architecture are discussed.... View full abstract»

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  • A scalable and secure mobile agent based surrogate host system

    Publication Year: 2001, Page(s):776 - 782 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB) | HTML iconHTML

    Mobile agents represent a distributed computing paradigm in which software migrates autonomously from one host in a network to another. In spite of its promises, mobile agent systems have not gained substantial acceptance because of the security concerns that have not been adequately addressed yet. In this paper, we propose an architecture that allows user programs to run on third party hosts call... View full abstract»

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  • A new digital multiple feedback control strategy for single-phase voltage-source PWM inverters

    Publication Year: 2001, Page(s):809 - 813 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (306 KB) | HTML iconHTML

    This paper proposes a new digital multiple feedback control scheme for uninterruptible power supplies (UPS) using a single-phase half-bridge inverter. The control scheme is based on sensing the current and voltage of the of the filter's capacitor. Thus, current deadbeat control is achieved, which is easy to be deduced by the discrete state equation of the LC filter. An outer voltage feedback loop ... View full abstract»

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  • Decomposition of a linear-filter channel with additive noise

    Publication Year: 2001, Page(s):636 - 640 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (305 KB) | HTML iconHTML

    This paper introduces a new multiplexing system for discrete-time signals based on polynomial residue arithmetic. Using this multiplexing system, a linear additive-noise channel is decomposed into independent subchannels that are also modeled as quasi-linear additive noise channels. This property is useful for subchannel users to apply accumulated conventional technologies in the design of subchan... View full abstract»

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  • Analysis of 2.45 GHz 4-bit hybrid-coupled phase shifter for phased arrays

    Publication Year: 2001, Page(s):529 - 534 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (410 KB) | HTML iconHTML

    A complete analysis of 4-bit branchline hybrid coupled phase shifter for a phased array antenna operated in a Bluetooth access-point is presented. The analysis is based on the transmission line equivalent model which does not take account the losses of the substrate material. The analysis includes the performance of the cascaded phase shifters with different phase bit combinations. Different value... View full abstract»

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  • Circuit simulation of dynamic performances of the switched reluctance motor

    Publication Year: 2001, Page(s):592 - 596 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (697 KB) | HTML iconHTML

    Dynamic characterization by simulation of switched reluctance motor (SRM) systems and the development of a package for the same is the scope of this paper. The modeling of electromagnetic, control and mechanical concerns is presented in this paper. The time varying parameter, namely the inductance of SRM, which solely determine the dynamic response of the machine, is rigorously evaluated using the... View full abstract»

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  • Linear grade encoder for high resolution angle control of SRM drive

    Publication Year: 2001, Page(s):549 - 555 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (555 KB) | HTML iconHTML

    In SRM drives, the ON-OFF angles of each phase switch should be accurately controlled in order to control the torque and the speed stably. The accuracy of switching angles is dependent upon the resolution of the encoder and the sampling period of the microprocessor, that are used to provide the information of rotor position and to control the SRM power circuit, respectively. However, as the speed ... View full abstract»

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  • Shunt active filter with sliding mode control

    Publication Year: 2001, Page(s):884 - 889 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB) | HTML iconHTML

    This paper presents a simple control scheme which adopted the voltage source inverter to decrease current harmonics generated by the nonlinear load. The sliding mode control is used in the current control loop to achieve fast dynamics. Only the source currents are measured in the proposed control scheme to reduce the elements of current sensors needed in the conventional control approach. A simple... View full abstract»

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  • Digital filters for carrierless amplitude and phase receivers

    Publication Year: 2001, Page(s):575 - 579 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (310 KB) | HTML iconHTML

    Carrierless amplitude and phase (CAP) is a bandwidth efficient modulation and line coding scheme that has been accepted by various standardization bodies as the means to accomplish the task of high speed data transfer over voice grade unshielded twisted pair copper cable in digital subscriber line (DSL) applications. This paper considers the design of finite length digital filters for CAP receiver... View full abstract»

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  • Performance of dispersion compensation for ultrashort light pulse CDMA

    Publication Year: 2001, Page(s):769 - 775 vol.2
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (500 KB) | HTML iconHTML

    We investigate dispersion compensation using dispersion-compensating fiber (DCF) for ultrashort light pulse code division multiple access (CDMA) communication systems. The fiber link is composed of standard single-mode fiber (SMF) connected with two different types of DCFs. Fiber dispersion can be effectively decreased by properly adjusting the length ratio of DCF to SMF. Some different dispersion... View full abstract»

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