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IEEE Aerospace and Electronic Systems Magazine

Issue 8 • Aug. 1990

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Displaying Results 1 - 6 of 6
  • Applications of mathematical models in lead-acid battery design

    Publication Year: 1990, Page(s):3 - 6
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    Two mathematical models describing processes that occur in a lead-acid battery are presented. One model is used to evaluate the geometry of the current collecting grids for minimum ohmic losses; the other is useful for evaluating cell design parameters such as electrode paste specifications and separator characteristics. The formulation of the models is briefly discussed, and they are demonstrated... View full abstract»

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  • Complex impedance studies of lithium iodine batteries

    Publication Year: 1990, Page(s):7 - 12
    Cited by:  Papers (2)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (446 KB)

    Complex impedance spectra of conductivity cells containing iodine-poly-2-vinylpiridine cathode material has been taken by two- and four-probe techniques. The impedance spectra contain a current-independent bulk resistance in series with a current-dependent interfacial resistance. The current-dependent interfacial resistance has the characteristics expected of a charge-transfer resistance. Electron... View full abstract»

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  • Brushless motors and controllers designed for GM Sunrayce

    Publication Year: 1990, Page(s):13 - 15
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    A description is given of the design, function, and application of a series of brushless motors and controllers being offered to the participants of the GM-sponsored Sunrayce, a competition of solar-powered electric vehicles. The motor and controller, when purchased together, provide single bidirectional speed control, automatic overspeed protection, motor and controller overtemp protection, and m... View full abstract»

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  • Bimode uninterruptible power supply compatibility in renewable hybrid energy systems

    Publication Year: 1990, Page(s):16 - 22
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    An alternative to inverters with add-on charging circuits or standby uninterruptible power supply (UPS) hardware, the bimode UPS, is discussed. The bimode UPS uses common circuitry and power components for DC-to-AC inversion and battery charging. It also provides an automatic and nearly instantaneous AC power transfer function when the engine-generator is started or stopped. The components of the ... View full abstract»

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  • Battery configurations for multi-megawatt pulse power

    Publication Year: 1990, Page(s):23 - 26
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The capability of lead-acid batteries for supplying very high power for a short time is explored. The application of such a battery for accelerating a hypersonic plane is used to illustrate the requirements. A technique for analyzing batteries and controlling voltage for pulse loads is described. Evaluation of lead-acid batteries in production and voltage regulation by switching batteries in and o... View full abstract»

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  • A nickel/hydrogen battery for PV systems

    Publication Year: 1990, Page(s):27 - 30
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (278 KB)

    The nickel-hydrogen battery, developed in the early nineteen-seventies as an energy-storage subsystem for commercial communication satellites, is discussed. The advantages offered by nickel-hydrogen batteries, including long life, low maintenance and high reliability, make it very attractive for terrestrial applications such as stand-alone photovoltaic systems. The major drawback to the wider use ... View full abstract»

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IEEE Aerospace and Electronic Systems Magazine is a monthly magazine that publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments as well as news and information of interest to IEEE Aerospace and Electronic Systems Society members.

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