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Industry Applications, IEEE Transactions on

Issue 5 • Date Sep/Oct 1989

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Displaying Results 1 - 25 of 26
  • Thermal characteristics of energized coal mine trailing cables

    Publication Year: 1989 , Page(s): 824 - 829
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (616 KB)  

    The US Bureau of Mines conducted research to determine the relationship between current load and temperature rises in coal mine trailing cables. Six low-voltage unshielded portable power cables were continuously and intermittently loaded with direct current of various magnitudes. Relationships between average temperature at the conductor/insulation interface and current load were established. The ... View full abstract»

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  • Realization of a control device for a robotic manipulator based on nonlinear decoupling and sliding mode control

    Publication Year: 1989 , Page(s): 790 - 799
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (744 KB)  

    The realization of a control system for a robotic manipulator is described. The control scheme is subdivided into two hierarchical levels: the inner level performs the output decoupling of the joint dynamics: the outer one computes the desired accelerations. The decoupling, obtained by a simplified compensator and a sliding mode technique, is realized by means of analog circuits, while the trackin... View full abstract»

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  • Theory for finite-phase traveling-wave boundary-guided transport of triboelectrified particles

    Publication Year: 1989 , Page(s): 949 - 955
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (568 KB)  

    Numerical simulations are used to picture synchronous and asynchronous domains of traveling-wave pumping of charge-conserving particles (having mass m, charge q, radius a, and mobility b) in terms of the dimensionless frequency Ω=(ω/k)/(bE0), mass M=(m/q) (kb) (bE0),... View full abstract»

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  • Improving precision in manufacturing

    Publication Year: 1989 , Page(s): 800 - 804
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (368 KB)  

    Principles are presented for improving the spatial accuracy of manufacturing machines by combining novel spatial gauging equipment, versatile desktop computers, powerful software, and sound statistical techniques. A novel multiple regression procedure is presented to evaluate parameters for dimensional correction that reduce the machine's residual errors to their minimum-least-squares value. The t... View full abstract»

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  • Traveling-wave delivery of single-component developer

    Publication Year: 1989 , Page(s): 956 - 961
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (568 KB)  

    With the objective a controlled electrical delivery of single-component toner from a hopper to an image developing region, the traveling-wave induced pumping of dilute triboelectrified particles along the semi-insulating surface of a 100 μm thick insulating layer is studied. Fabricated on a circuit board underlying the layer are electrodes connected to a six-phase high-voltage system so as to g... View full abstract»

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  • Optimum electrical system design for a modern chlor-alkali plant

    Publication Year: 1989 , Page(s): 928 - 938
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (864 KB)  

    Development of the electrical distribution system for a modern chlor-alkali plant is described starting from the conceptual design stage and continuing through final equipment design. Emphasis is on the electric utility interface, main plant substation, 13.8 kV distribution system, rectifier design and control, and DC bus design. Load flow, voltage regulation, and harmonic studies are discussed View full abstract»

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  • Application and use of inspection checklists for factory and field inspection of electrical equipment

    Publication Year: 1989 , Page(s): 855 - 864
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (844 KB)  

    The success or failure of electrical projects can often be determined by the proper use, or lack of use, of adequate equipment inspection and testing procedures. Examples are given of a large petroleum production project with an extremely tight client startup schedule where the use of proper inspection and testing procedures ensured successful start-up ahead of the client's schedule. Factory inspe... View full abstract»

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  • Development of a 40-year design life severe duty motor

    Publication Year: 1989 , Page(s): 881 - 882
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (224 KB)  

    The factors that lead to motor failure are considered, and an analysis of those components most affected by insulation design is presented. The insulation design factors considered are: enclosure, rotating elements, electrical winding, materials, and the manufacturing processes used. The selection of proper insulation to protect the winding from premature failure for round-wire random windings is ... View full abstract»

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  • Integrated metering and protective relay systems

    Publication Year: 1989 , Page(s): 889 - 893
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (456 KB)  

    The process of converting sampled analog signals to digital numbers using a low-cost microprocessor and an A/D converter for motor protection is considered. Distribution fault records, relay performance with extremely saturated low ratio current transformers, and advanced methods of protecting high-inertia drive motors are presented. The discussion also covers: digital filtering; range of operatio... View full abstract»

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  • Zero-voltage-fired transformer-coupled thyristor power control applied for temperature control of the tin bath in the float glass process

    Publication Year: 1989 , Page(s): 805 - 810
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (508 KB)  

    A novel thyristor-based power circuit is described that substitutes zero-voltage-fired time-proportioning control and thus allows fewer transformer taps while causing no degradation of circuit power factor. Harmonic distortion usually associated with phase angle control in this application is eliminated. A system description outlining power requirements, a comparison of power factor costs, and sys... View full abstract»

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  • NEC Article 725-cost-effective control wiring

    Publication Year: 1989 , Page(s): 901 - 905
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (428 KB)  

    The authors consider Article 725 of the National Electrical Code with regard to the limitations imposed and the advantages provided by this section of the code. The Article's applicability in hazardous environments is considered. The installation, application, and transient protection of communications cable for instrumentation circuits is also outlined View full abstract»

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  • A coordination-free ground-fault relay for AC mine distribution systems

    Publication Year: 1989 , Page(s): 819 - 823
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (500 KB)  

    A brief review of the coordination-free ground-fault protection concept is presented, followed by a discussion of major design considerations. The actual design of a coordination-free relay system is then described along with laboratory test results. Based on this information, conclusions are drawn relating to performance in typical mining situations View full abstract»

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  • A new threat-EMI effect by indirect ESD on electronic equipment

    Publication Year: 1989 , Page(s): 939 - 944
    Cited by:  Papers (15)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (584 KB)  

    A discussion is presented of the need to recognize the occurrence of indirect electrostatic discharge (ESD) on electronic equipment. The use of a detector for this application is outlined along with detector response. Current risetime versus discharge voltage is examined as an antenna-induced voltage versus discharge voltage. Electromagnetic wave intensity inside a copper cabinet is also discussed View full abstract»

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  • Anti-friction bearing temperature rise for NEMA frame motors

    Publication Year: 1989 , Page(s): 883 - 888
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (448 KB)  

    An acceptable antifriction bearing temperature is recommended, and, in particular, the location for monitoring the bearing temperature rise for NEMA frame chemical industry severe-duty squirrel-cage induction motors is identified. The relationship between the bearing temperature rise and stator winding temperature rise is investigated. An overview of the types of antifriction bearings most commonl... View full abstract»

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  • Integration of utility distribution system into a refinery plant generation/distribution network at Unocal Los Angeles Refinery

    Publication Year: 1989 , Page(s): 918 - 927
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (712 KB)  

    A discussion is presented of the installation of a 46 MW cogeneration plant and the conversion of a 34.5 kV utility distribution system to a refinery distribution system with an interconnection to the utility to export or import electrical power. The intended modifications for the conversion are described. The integration of a power cogeneration plant is discussed, covering gas turbine, generator,... View full abstract»

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  • Diagnostic maintenance expert system for the hydraulic subsystem of a continuous miner

    Publication Year: 1989 , Page(s): 841 - 845
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (472 KB)  

    An expert system is being developed for diagnostic maintenance of the hydraulic system of a continuous coal mining machine. Through the use of such a system, lengthy and costly delays due to equipment failure and repair can be significantly reduced. This type of equipment diagnostic system can be applied to the electrical and mechanical systems as well as other mining machinery. The functional req... View full abstract»

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  • Considerations for application of electrical submersible pumps for underground coal mine dewatering

    Publication Year: 1989 , Page(s): 846 - 850
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (444 KB)  

    At mining depths beyond 800 ft., electrical submersible pumps become an economic alternative for coal mine dewatering. Pump configurations differ from those used for freshwater or petroleum applications. Controls are implemented by a combination of commercial and custom techniques. Pump configurations, code requirements, and pump controls are discussed. It is stressed that pump reliability is affe... View full abstract»

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  • Self-checking safety interlock system

    Publication Year: 1989 , Page(s): 851 - 854
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (340 KB)  

    A novel electrical self-checking interlock system for the petrochemical industry is discussed that meets the goals of eliminating fire, explosion, and chemical releases by providing more reliable safety shutdown systems. The design, operating principles, and performance characteristics of the microprocessor-based self-checking safety interlock system are described. With some modification the syste... View full abstract»

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  • 1987 ampacity tables-demystifying the myths

    Publication Year: 1989 , Page(s): 910 - 917
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (784 KB)  

    The major change in the National Electrical Code method of calculating the ampacity rating of conductors affects every segment of the electrical industry. The history and background of the development of the principles of calculating the load capabilities of conductors are presented. The limitations of the earlier works and obstructions to accepting the all-inclusive formula are detailed View full abstract»

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  • Determination of motor quality through routine electrical tests

    Publication Year: 1989 , Page(s): 873 - 880
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (672 KB)  

    Tests representing mechanical and electrical testing that can be performed on fully assembled motors are described. Associated benefits along with the corresponding costs are identified. The tests covered are heat run, performance locked-rotor, speed-torque, no-load-saturation, surge, high-potential, polarization-index, single-phase-rotor, Reed-critical-frequency, hot/cold vibration coastdown-crit... View full abstract»

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  • The application of a continuous leak detection system to pipelines and associated equipment

    Publication Year: 1989 , Page(s): 906 - 909
    Cited by:  Papers (10)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (428 KB)  

    An overview of classical leak detection systems is given and the engineering basis of a novel type of detector is examined. This system is a flexible hydrocarbon-sensing cable that can be installed along pipelines, in double-containment tanks and piping, or in trenches to detect and locate leaks of common industrial hydrocarbon solvents or fuels while ignoring the presence of water. The simple ele... View full abstract»

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  • Harmonics and technical barriers in adjustable speed drives

    Publication Year: 1989 , Page(s): 894 - 900
    Cited by:  Papers (15)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (524 KB)  

    All thyristor adjustable-speed drives, unlike fixed-speed ones, generate harmonics to some degree. Harmonics are currents and voltages that are multiples of the fundamental 60 Hz frequency. Any power converter that converts AC to DC or DC to AC can be considered to be a source of harmonics. The characteristics of harmonics produced by an adjustable-speed drive system, methods of reducing them, and... View full abstract»

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  • Alternate methods of energy recovery for the mining industry

    Publication Year: 1989 , Page(s): 811 - 818
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (652 KB)  

    When mining for certain precious metals such as gold and silver, it is sometimes necessary to excavate to great depths (>3000 m) below the surface, where the environments is hot and humid. Refrigeration plants are needed that require large volumes of cooling water to be brought into and taken out of the mines. By converting the potential energy of the incoming water to electricity rather than t... View full abstract»

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  • Computerized method for evaluating the suitability of trailing cables

    Publication Year: 1989 , Page(s): 830 - 840
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (648 KB)  

    A program to develop models for the enable computer calculation of conductor temperature rise versus time in trailing cables has been initiated. To date, a common model equation has been developed and parameters determined for two round trailing cables typically used on continuous miners, type G-GC, sizes 2/0 AWG and 4/0 AWG, rated 90°C. The resulting cable models have been tentatively confirm... View full abstract»

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  • Breakup of large water droplets by electric fields

    Publication Year: 1989 , Page(s): 945 - 948
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (756 KB)  

    The results are presented of an experimental study of the processes that lead to the breakup of a large water droplet doped with alcohol to approach the density of oil and immersed in an oil dielectric medium to which a strong electric field is applied. The study, which was carried out by means of photography, showed that the deformation of the droplets prior to breakup involves distinct character... View full abstract»

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Aims & Scope

The scope of the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS includes all scope items of the IEEE Industry Applications Society, that is, the advancement of the theory and practice of electrical and electronic engineering in the development, design, manufacture, and application of electrical systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; industry leadership in energy conservation and environmental, health, and safety issues; the creation of voluntary engineering standards and recommended practices; and the professional development of its membership.

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Carlton E. Speck