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TENCON '98. 1998 IEEE Region 10 International Conference on Global Connectivity in Energy, Computer, Communication and Control

Date 17-19 Dec. 1998

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  • IEEE Region 10 International Conference on Global Connectivity in Energy, Computer, Communication and Control [front matter]

    Publication Year: 1998, Page(s):i - xvii
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    Freely Available from IEEE
  • Sir J.C. Bose revisited [MM wave research]

    Publication Year: 1998, Page(s):291 - 294 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    The presentation of the work of Sir. J.C. Bose (1895, 1896, 1897, 1927) to the scientific community has resulted in a plethora of newspaper articles which claimed that perhaps the western scientific world of Lords Rayleigh and Kelvin which created Bose, attempted to deprive him of his Noble Prize for his work on electromagnetic phenomena which were carried out at the same time as that of Marconi. ... View full abstract»

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  • Protection of power system apparatus against arcing faults

    Publication Year: 1998, Page(s):436 - 439 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    This paper presents a technique that detects the presence of arcing faults by analyzing the radiation produced due to arcing faults. Acoustic, infra-red and radio waves are recorded using appropriate sensors and a DSP-based data acquisition system. The recorded signals are then classified using artificial neural networks. The technique was implemented and tested in the laboratory. Some test result... View full abstract»

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  • A new approach for protecting busbars

    Publication Year: 1998, Page(s):432 - 435 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    This paper describes a digital technique for protecting busbars. The technique uses positive- and negative-sequence models of the power system in a fault-detection algorithm. The phase voltages and currents at the busbar location are used to detect faults. The performance of the proposed technique was studied for a variety of operating conditions and busbar configurations using simulated data View full abstract»

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  • Artificial neural network based voltage controller for energy efficient induction motor drive

    Publication Year: 1998, Page(s):410 - 413 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    A loaded induction motor is generally obtained using a search technique which involves more time and the machine is subjected to many step changes of voltage which is undesirable. This paper presents two novel techniques for energy efficient operation of a voltage controlled induction motor drive using artificial neural networks (ANN). In the proposed methods, the time required to converge to the ... View full abstract»

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  • Simplified model for control design of STATCOM using three-level inverter

    Publication Year: 1998, Page(s):536 - 539 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    A simplified closed-loop model is proposed for a static compensator (STATCOM). Although PI and PD controllers for the proposed model have been investigated, the latter controller is found to offer better performance. This model makes it possible to extract instantaneous active fundamental component of the load current. The STATCOM is configured using a three level voltage source inverter. For high... View full abstract»

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  • New perceptions in integrated power system operation and control

    Publication Year: 1998, Page(s):489 - 496 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    In the persistence of generation capacity shortages, increasing demand, private sector participation and interconnections of power systems, the operational and control tasks have become complex and multi dimensional. This paper is aimed to put forth the changing power scenario, nature and challenges being faced in successful operation, emergency control practices and new technology emerging to han... View full abstract»

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  • On the performance of interleaved convolutional codes and the comparison with BCH codes in different mobile channels

    Publication Year: 1998, Page(s):344 - 347 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    The 3-state and 4-state Markov models are proposed as the long-bursting error possibility models of mobile channels. The coding and decoding of simple convolutional codes and the method of interleaving are combined. The error-correcting performance of interleaved convolutional codes in nine different channels with different modulation styles, vehicle speeds, and different information transmitting ... View full abstract»

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  • A new fuzzy logic based power system stabilizer

    Publication Year: 1998, Page(s):531 - 535 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    A new power system stabilizer based on fuzzy logic control (NFLPSS) using speed deviation (Δω) and change in excitation voltage (ΔEfd) as inputs is presented in this paper. Also a new method of defining the membership functions of fuzzy classes for the variables over the respective universe of discourses is also presented. Simulation studies have shown that the propose... View full abstract»

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  • High horse power ratings in AC drives by means of phase-redundancy technique-some experimental investigation

    Publication Year: 1998, Page(s):580 - 583 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    Phase-redundancy is a simple and unique technique for improving the reliability of large adjustable-frequency AC drives. As the name suggests, this technique is based on the inherent feature of a general n-phase AC motor to continue operation following loss of excitation to one or more of its many stator phases during open circuit or short circuit at stator terminals. This technique can, also be u... View full abstract»

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  • Inversion of recurrent neural networks for control of non-linear systems

    Publication Year: 1998, Page(s):642 - 647 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    Recurrent neural networks can be used for both the identification and control of non-linear systems. This paper takes a previously derived set of theoretical results about recurrent neural networks and applies them to task of providing internal model control for a non-linear plant. Using the theoretical results, we show how an inverse controller can be produced from a neural network model of the p... View full abstract»

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  • Capacitor self-excited double-armature synchronous generator for enhanced power output

    Publication Year: 1998, Page(s):391 - 397 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    A three-phase squirrel-cage induction motor driven by a prime mover can be self-excited by a bank of 3-phase capacitors to give supply as an induction generator. In any motor or generator, normally one side provides the excitation and other side produces power i.e. only half of the machine produces power. In a 3-phase slip ring induction motor both the stator and rotor windings can be connected in... View full abstract»

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  • Digital simulation of power systems

    Publication Year: 1998, Page(s):444 - 447 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    This paper outlines the evolution of digital simulation of power systems and describes the present state of the art. This evolution is caused by and closely follows the evolution of the digital computer. Both the speedup of the hardware and the sophistication of the software environment have greatly influenced the digital simulation of power systems and its various applications. The hardware speed... View full abstract»

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  • A simple microcontroller based building block for digital communication applications

    Publication Year: 1998, Page(s):324 - 327 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    This paper describes the design of a simple building block for applications in the area of digital communication. The simple building block functions mainly as a digitally programmable oscillator (DPO) extendable to work as a BFSK modulator. The DPO is designed using an LM 565 PLL chip, the centre frequency of the VCO within which is controlled by an 8031 microcontroller using binary weighted swit... View full abstract»

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  • An improved converter with power factor correction of 3-phase auxiliary loads

    Publication Year: 1998, Page(s):552 - 556 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    This paper deals with the performance analysis of an improved converter which is capable of supplying reactive power of other 3-phase linear loads at the common point of connection to the AC mains. The converter with sinusoidal unity power-factor input currents can provide regulated DC voltage to feed applications such as adjustable speed drives (ASD). It employs a PI based DC voltage controller a... View full abstract»

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  • Method of digital signal's spectrum coding in the analog channels

    Publication Year: 1998, Page(s):340 - 343 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    On the basis of summarizing the superiority and inferiority of the current digital communication systems, this paper provides a spectrum-coding method adaptive to narrow-band radio communication to transmit digital signal. This method codes the spectrum with the binary digital signal to be transmitted, then convert the spectrum to an ordinary analog signal by the IFFT and transmits it. At the rece... View full abstract»

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  • Energy loss reduction in distribution system by capacitor placement through combined GA-SA technique

    Publication Year: 1998, Page(s):502 - 505 vol.2
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    The problem in optimal placement of capacitors is to decide on the number, locations, and sizes of capacitors to be placed at different buses of the system such that the reduction of energy losses become maximum considering the load variation and the cost of capacitors. A solution technique using combined simulated annealing and genetic algorithm is presented in this paper. The results for two tes... View full abstract»

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  • Application of power electronics in the transmission of electrical energy

    Publication Year: 1998, Page(s):522 - 530 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    Application of power electronics in the field of power distribution and transmission systems is attracting wide attention because of its anticipated large scale application in the future. Traditional industry structure and operating principles have built around a tightly and centrally controlled single entity in a typical vertically integrated utility. The demands that are made on the power system... View full abstract»

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  • A new approach for image compression using an image array

    Publication Year: 1998, Page(s):630 - 633 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    We have developed an image array by taking digital roots of addition of single numbers. We have discussed its properties previously by Deshpande (1993). We have observed additional properties which are used in developing a digit controller. In this paper, modified image arrays are developed for image and data compression. Four bits are required instead of 6 bits to store 64 gray levels (numbers). ... View full abstract»

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  • Making mobile IP more efficient

    Publication Year: 1998, Page(s):352 - 355 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    With the proliferation of compact laptops and notebook computers, and the spread of wireless network interfaces, the mobility of hosts connected to a network is becoming an important issue. Perkins (see IEEE Communications Magazine, p.84-99, 1997) proposed a mobile IP protocol, which relies on mobility support routers (MSR) and provides continuous network connectivity to the mobile hosts. These MS... View full abstract»

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  • Intelligent multimedia technology and its application in training for operators in Chinese power plants

    Publication Year: 1998, Page(s):453 - 456 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    Taking into consideration the remarkable diversity of the trainees' knowledge background in Chinese hydro-power plants, we have developed a multimedia intelligent training system (MITS) suitable for various kinds of trainees with different entrance levels and exit targets as well as the duration of the training. In this paper, the teaching strategies adaptable to those trainees. Two presentation m... View full abstract»

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  • An 8-element switched-beam array antenna for mobile satellite communications

    Publication Year: 1998, Page(s):241 - 244 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    Conventional designs of phased array antennas for mobile satellite communications carry a high price tag. Hence antenna designers look for alternative low-cost solutions. In the paper, the design and development of a low-cost 8-element switched-beam array antenna is presented. The array elements are arranged in a circle on the side of a truncated cone whose inclination angle matches the satellite ... View full abstract»

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  • On-line instantaneous and delayed control of a fast tubular reactor

    Publication Year: 1998, Page(s):448 - 452 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    A control system for the tubular reactor-unit has been synthesized, which is a combination of feedforward, feedback and inferential control configurations. The reactor chosen is fast; transient period for a given disturbance varies between 20 and 100 sec, as found from numerical simulation. Therefore a fast on-line control scheme using heuristic approach has been used in which disturbances, manipu... View full abstract»

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  • An integrated distributed motor monitoring system

    Publication Year: 1998, Page(s):575 - 579 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    This paper describes a state-of-the-art distributed motor monitoring system (DMMS), a computer based system communicating with individual equipment monitoring units (EMUs) distributed in the field and connected in a network. The EMUs are connected in a daisy chain with a proprietary communication protocol. DMMS is an on-line system developed in the Windows environment. The principal functions of D... View full abstract»

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  • Fault-tolerant routing in irregular MINs

    Publication Year: 1998, Page(s):638 - 641 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    Efficient and simple routing algorithms have been developed for two irregular MINs-namely, MFDOT and QT. Static routing provides full access for MFDOT whereas minimal multiple paths to reach the destination are provided through dynamic routing in QT networks. Multiple paths of varying lengths are available to route the data to the destination in irregular MINs. The path length is just 2 for a favo... View full abstract»

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