Proceedings of 1996 Canadian Conference on Electrical and Computer Engineering

26-29 May 1996

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  • 1996 Canadian Conference on Electrical and Computer Engineering

    Publication Year: 1996
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    Freely Available from IEEE
  • Robotics and control R&D in the Canadian Space Station program

    Publication Year: 1996, Page(s):482 - 485 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (387 KB)

    The Canadian Space Agency has chosen space robotics as one of its key niche areas, and currently more than 75% of the space robotic program resources is for the International Space Station. As a result of this the Canadian Space Station Program has invested considerable research and development effort in the field of robotics and control. This R&D effort is occurring both in the main mobile servic... View full abstract»

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  • Dynamic analysis of a high performance permanent magnet synchronous motor drive

    Publication Year: 1996, Page(s):611 - 614 vol.2
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (376 KB)

    In this paper, a complete model is developed to examine the dynamic behaviors of a high-performance vector controlled permanent magnet synchronous motor (PMSM) drive. The d,q axis model of the PMSM is used to simulate and analyze the complete drive system. Based on the vector control principle and current feedback control, the nonlinear dynamic model of the PMSM drive can be simplified and lineari... View full abstract»

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  • Harmonic reduction in three phase unbalanced systems

    Publication Year: 1996, Page(s):663 - 666 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (346 KB)

    Active power filters are becoming more and more economically viable as a solution to reduce harmonics generated by nonlinear loads. In the shunt connected conventional three-phase topology, interactions between phases are experienced. This problem points to the necessity of having per phase based current controllers and power converters. The three half-bridge topology presented in this paper is a ... View full abstract»

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  • Author index

    Publication Year: 1996
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    Freely Available from IEEE
  • Active corrector of the power factor in a three-phase network with impedance

    Publication Year: 1996, Page(s):842 - 846 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (380 KB)

    This study aims to analyse the working of a three-phase convertor controlled by the method of pulse width modulation with sinusoidal references. A simulation aided by Matlab software is completed with consideration of the state representation of each working sequence. The values of the various parameters of the system is optimized on the basis of this simulation. It is then shown that this type of... View full abstract»

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  • Non destructive monitoring of the curing process of epoxy in situ by way of a fiber acoustic sensor

    Publication Year: 1996, Page(s):880 - 883 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (256 KB)

    In this paper the experimental model of the nondestructive monitoring of the curing process of epoxy in situ by way of an embedded fiber optic acoustic sensor is given and the sensing principles of this intensity modulation fiber acoustic sensor are theoretically analyzed. The highlight is focused on the study of how the amplitude of the nonideal guided mode L01 in the acoustic fiber ch... View full abstract»

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  • A three-phase active power filter for harmonic and reactive power compensation

    Publication Year: 1996, Page(s):838 - 841 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (320 KB)

    In this paper, a 3-phase active power filter (APF) is presented to eliminate harmonics and to compensate the reactive power of an uncontrolled rectifier with capacitive loading taken as nonlinear load. An APF is realized using a 3-phase voltage source inverter (VSI) with DC bus capacitor. Reference source currents are estimated using P-I control over DC bus voltage and 3-phase source voltages. Com... View full abstract»

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  • Frequency dependent network equivalent algorithm for AC power systems

    Publication Year: 1996, Page(s):639 - 642 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (256 KB)

    In electromagnetic transients studies, only a small part of an AC power system can be modeled in detail. The remaining parts of the system should be reduced to equivalent networks. Different methods have been developed to generate frequency dependent network equivalent (FDNE) models. These FDNE models consist of simple R,L and C branches that reproduce the impedance frequency characteristic of the... View full abstract»

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  • Mechanical vibration analysis using an optical sensor

    Publication Year: 1996, Page(s):876 - 879 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (344 KB)

    A laser-based contactless displacement measurement system developed at the National Optics Institute is used for data acquisition to analyze the mechanical vibrations exhibited by vibrating structures and machines. The analysis of these vibrations requires a number of signal processing operations which include the determination of the system conditions through a classification of various observed ... View full abstract»

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  • Capacitor placement in distribution systems using fuzzy technique

    Publication Year: 1996, Page(s):790 - 793 vol.2
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (344 KB)

    A new approach using fuzzy sets theory and heuristic rules is used to determine the optimal number, size, and location of capacitors to place in a distribution system. The use of fuzzy sets theory is utilized for the decision of candidate nodes for the installation of capacitors by reconciling the degree of reactive power loss and the voltage sensitivity. This algorithm is applied to a practical c... View full abstract»

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  • Comparison studies of five neural network based fault classifiers for complex transmission lines

    Publication Year: 1996, Page(s):745 - 749 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (424 KB)

    The application of neural networks to power systems has been extensively reported. In the field of protection, neural network based-protection techniques have been proposed by a number of investigators including the authors. However, almost all the studies have so far employed the backpropagation neural network structure with supervised learning. It is the purpose of this paper to report some rece... View full abstract»

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  • Blocking analysis and optimized design of a class of circuit-switched multicast networks

    Publication Year: 1996, Page(s):966 - 971 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (428 KB)

    We present a blocking analysis and optimized design method for a wide-area multicast videoconferencing service which interconnects subscriber locations via circuit-switched DS-1 multicast control units (MCUs). Optimization leads to a configuration of MCUs in which the end-to-end blocking of random multicast traffic meets a target specification with a minimum total number of MCUs. The analytical mo... View full abstract»

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  • Control strategies for a hybrid static reactive compensator

    Publication Year: 1996, Page(s):834 - 837 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (360 KB)

    This paper presents a hybrid approach for the reactive power compensation. The proposed approach combines a current regulated power electronic converter in series with the conventional static VAr compensator (SVC) connected in shunt to the power line. The current through this power electronic converter is controlled to inject sinusoidal currents of desired compensation level into the power system.... View full abstract»

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  • On trajectory control of multi-link robots with flexible links and joints

    Publication Year: 1996, Page(s):513 - 516 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (352 KB)

    A technique based on numerical optimization is presented in this paper for solving the inverse dynamics and kinematics of multi-link robot arms with flexible links and joints. This technique finds the joint torques required to move the end point of flexible manipulators through specified trajectories while avoiding tip oscillations. Since the point for which the prescribed motion is specified and ... View full abstract»

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  • AC/DC/AC quasi-resonant transistor's converter for AC drive application

    Publication Year: 1996, Page(s):624 - 626 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (208 KB)

    This paper discusses the AC/DC/AC IGBT power converter system with a quasi-resonant circuit, which is a common commutation system for all transistors and which minimizes switching losses. The input AC/DC inverter is controlled to keep unity input power factor. The output DC/AC inverter supplies the AC motor, which is controlled by an indirect field-oriented method View full abstract»

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  • Modeling of medium voltage smart motor controllers (MV SMC) in PSPICE

    Publication Year: 1996, Page(s):635 - 638 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (208 KB)

    Computer-aided analysis and synthesis of power electronics circuits provides a powerful and economic insight into MV smart motor controllers. Although the PSPICE software contains a library of specific semiconductor devices including SCRs, the programmability of a thyristor model is required. A thyristor model featuring programmable on-resistance and reverse recovery time was proposed by Losic (19... View full abstract»

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  • Faraday effect optical current sensor

    Publication Year: 1996, Page(s):871 - 875 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (348 KB)

    Based on the classical electromagnetic theories, the Faraday magnetooptic effect in a diamagnetic medium is independent of temperature. In this study the geometric compensation methods is adopted and closed loop current sensor with frame structure is designed and fabricated based on the Faraday effect in diamagnetic media using SF6 glass. With the closed loop optical current sensor the experimenta... View full abstract»

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  • Intellectual property law for software professionals

    Publication Year: 1996, Page(s):915 - 918 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (368 KB)

    Due perhaps to the exponential growth of the use of computers, and the corresponding increase in the monetary value of software and computer related technologies, the legal issues surrounding these technologies are increasingly affecting software professionals such as researchers, developers, publishers and others. The author believes that it is now essential for software professionals to understa... View full abstract»

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  • Flux distribution and core losses of switched reluctance motors

    Publication Year: 1996, Page(s):935 - 938 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (272 KB)

    The pole and yoke flux waveforms for a prototype switched reluctance motor (SRM) are presented. These flux waveforms are obtained from measured voltage signals from search coils, installed inside the SRM during its construction, through a numerical integration routine. Harmonic components for both of these flux waveforms are also presented along with eddy current loss and hysteresis loss coefficie... View full abstract»

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  • Improving the classification accuracy of automatic text processing systems using context vectors and back-propagation algorithms

    Publication Year: 1996, Page(s):696 - 699 vol.2
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (380 KB)

    We analyze some of the benefits of combining the context-vector representation of documents with the back-propagation paradigm for document classification. We discuss an implementation of this architecture, called NeuroFile, which combines automatic document classification with similarity-based, as well as Boolean retrieval facilities in a single electronic filing system. The quality of performanc... View full abstract»

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  • SCR harmonic correction topologies for VSI drives

    Publication Year: 1996, Page(s):992 - 995 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (308 KB)

    The circuit topologies described in this paper contribute to the technology of converting three-phase AC power to DC, with the prime application being the input stage to commercial variable speed VSI drives. The power converter topologies examined are essentially SCR harmonic correction units (HCUs) suitable as a retrofit or as a drive option. The elementary HCU uses a three-phase switch network t... View full abstract»

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  • An artificial neural network for optimum topology in distribution expansion planning

    Publication Year: 1996, Page(s):786 - 789 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (332 KB)

    An artificial neural network supported with an expert system is developed to determine the optimum topology in the expansion of distribution systems. This technique reduces considerably both training and testing time. The required input data is a digital simulation of the overloaded feeders switch status which is obtained directly from the expert system. The output of the neural network is the cor... View full abstract»

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  • Radiation pattern control in microstrip antennas

    Publication Year: 1996, Page(s):859 - 862 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (376 KB)

    The far field radiation from a microstrip antenna is investigated numerically. Such an antenna has several electrical and geometrical parameters that can be used in shaping its radiation patterns. Among these the ground plane size and shape have the least effect on the antenna circuit parameters and may be used as the controlling parameters. A few representative antenna configurations are selected... View full abstract»

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  • WATSUN-PV 4.0 modifications to include wind turbine generator, AC load shedding, and operation with zero-capacity diesel generator

    Publication Year: 1996, Page(s):655 - 658 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (328 KB)

    The source code for the WATSUN-PV 4.0 hybrid energy model was modified to incorporate models for a wind turbine generator (WTG) and a simple form of AC load shedding as well as allowing operation without a diesel generator. Five sets of revisions of the model were required during its development. Tests of the final computer model used weather data for Edmonton, Toronto, and Vancouver, diesel gener... View full abstract»

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