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  • Full of his details and other essays

    Creator:
    Tuma, Teresa K. Easterling
    Abstract:
    This collection consists of autobiographical essays which center around my father, my first husband, and my backyard. All of the pieces are recollections, and most occur either from my study inside the house, or from the deck outside, looking at the yard. The Preface is the story of how I...
    Resource Type:
    Masters Thesis
    Full Text:
    THESIS OF Teresa K. Easterling Tuma for the degree of Master of Arts in English presented on May 19

  • The effect of 2, 4-dichlorophenoxyacetic acid on the vivo metabolism of acetate in rats

    Creator:
    Philleo, William Wallace
    Abstract:
    Normal adult rats absorbed and metabolized C¹⁴-labeled acetate rapidly. The greatest percentage of the administered radioactivity was recovered in the expired CO₂, however small amounts of radioactivity were also found in the urine and feces. There were two rates of C¹⁴O₂ elimination in normal adult rats. The small amount of...
    Resource Type:
    Masters Thesis
    Full Text:
    metabolism of acetate in rats AN ABSTRACT OF THE THESIS OF William Wallace Philleo for the M.S. in

  • General pole number model for the brushless doubly-fed machine

    Creator:
    Boger, Michael S.
    Abstract:
    The Brush less Doubly-Fed Machine (BDFM) has the potential to be a more cost effective replacement for conventional induction or synchronous machine drives. The BDFM has two stator windings: a power winding and a control winding. An electronic power converter of variable voltage and frequency is connected to the control...
    Resource Type:
    Masters Thesis
    Full Text:
    professor, Alan Wallace, who has helped guide my efforts and allowed me to concentrate on my work and

  • Investigation, analysis and design of the linear brushless doubly-fed machine

    Creator:
    Seifkhani, Farroh
    Abstract:
    This thesis covers the efforts of the design, analysis, characteristics, and construction of a Linear Brush less Doubly-Fed Machine (LBDFM), as well as the results of the investigations and comparison with its actual prototype. In recent years, attempts to develop new means of high-speed, efficient transportation have led to considerable...
    Resource Type:
    Masters Thesis
    Full Text:
    : K. Wallace This thesis covers the efforts of the design, analysis, characteristics, and

  • Dynamic modeling, simulation and stability analysis of brushless doubly-fed machines

    Creator:
    Li, Ruqi
    Abstract:
    A brushless doubly-fed machine (BDFM) is a single-frame, self-cascaded induction machine capable of operating in both the induction and the synchronous modes. This thesis presents some important advances concerning dynamic modeling, simulation and analysis of the BDFM. Initially, a two-axis model and its associated parameters are developed and calculated. The...
    Resource Type:
    Dissertation
    Full Text:
    presented May 2 , 1991 Typed by Ruqi Li for Ruqi Li ACKNOWLEDGEMENTS I am grateful to Dr. A. K. Wallace

  • Design procedure for brushless doubly-fed machine used as a limited speed-range pump drive

    Creator:
    Alajmi, Abdulhadi M.
    Abstract:
    The continuing desire of industry to further improve process efficiency, through tighter control and energy conservation, has prompted users to pay closer attention to Adjustable Speed Drives (ASDs). The conventional ASDs consist of induction or synchronous motors controlled by power electronic controllers through the adjustment of supply frequency and line...
    Resource Type:
    Masters Thesis
    Full Text:
    approved : Alan K. Wallace The continuing desire of industry to further improve process efficiency

  • Prediction of brushless DC drive performance considering non-sinusoidal parameter variations and asymmetrical operating conditions

    Creator:
    Spee, Rene
    Abstract:
    A highly flexible numerical simulation model for the performance prediction of brushless dc drives is presented, which is capable of investigating unbalanced and asymmetrical operating conditions as well as drives with non-ideal parameters. Numerical speed-up procedures allow for the investigation of pulse-width modulated (PWM) drives using a personal computer. Experimental...
    Resource Type:
    Dissertation
    Full Text:
    K. Wallace A highly flexible numerical simulation model for the performance prediction of

  • Three-dimensional finite element design procedure for the brushless doubly fed machine

    Creator:
    Thompson, Brenda E.
    Abstract:
    Brushless Doubly Fed Machines (BDFM) have potential advantages in variable speed generation and adjustable speed drive applications. The most significant of these advantages is a reduction in the power electronic converter rating, and therefore a reduction in overall system cost. Presently, efforts are being directed at optimizing the design of...
    Resource Type:
    Masters Thesis
    Full Text:
    Finite Element Design Procedure for the Brush less Doubly Fed Machine. Abstract approved: Dr. Alan K

  • Preliminary studies on a magnetic elevator for solids (MES)

    Creator:
    Ranawake, Udaya A.
    Abstract:
    The thesis describes the preliminary studies on a laboratory model of a magnetic elevator intended as part of a system for circulating magnetic materials in chemical reactors. A multiple coil laboratory model, controlled by computer, was designed and constructed. Current measuring transducers were used to monitor system performance and study...
    Resource Type:
    Masters Thesis
    Full Text:
    Solids (MES) Redacted for Privacy Abstract approved : vi Alan K. Wallace The thesis describes the

  • Development of a 300 Hp regenerative motor and generator test facility

    Creator:
    Lewis, Timothy M. (Timothy Michael)
    Abstract:
    A 300 hp motor and generator testing facility is being completed at Oregon State University. The testing center is the largest independent testing facility west of the Mississippi River. This regional resource center will incorporate state-of-the-art features that set it apart from other testing facilities. An induction machine with a...
    Resource Type:
    Masters Thesis
    Full Text:
    Regenerative Motor and Generator T t Facility. Abstract Approved: Wallace A 300 hp motor and generator