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Filtering by: Creator Wallace, Patricia K. Remove constraint Creator: Wallace, Patricia K. Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering

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  • 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

  • Passively controlled variable-speed generator system

    Creator:
    Bathon, Tobias Siegfried
    Abstract:
    This thesis presents both an analysis and simulations of a passively controlled variable-speed generator system, which can be applied for renewable energy sources such as wind turbines. Parallel connected passive/external resistors and inductors are connected to the slip rings of a wound rotor induction machine to provide an acceptable speed...
    Resource Type:
    Masters Thesis
    Full Text:
    System. Abstract approved: -- \"'//,-? Alan K. Wallace This thesis presents both an analysis and

  • 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

  • Maximization of energy capture of passive, variable-speed wind-turbine

    Creator:
    Kinjo, Fuminao
    Abstract:
    This thesis presents and examines the concept that the output of a wound-rotor induction generator (WRIG) can be limited by means of linking to external impedances for wind-turbine generating system application. An 80kW-WRIG is simulated as a model to examine the control of the output power vs. speed characteristic. Model...
    Resource Type:
    Masters Thesis
    Full Text:
    : Maximization of Energy Capture of Passive, Variable-Speed Wind-Turbine Generator Abstract approved: Alan K

  • 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

  • Evaluation of the stray load losses for a three-phase induction motor

    Creator:
    Nagornyy, Aleksandr S.
    Abstract:
    The evaluation of the stray-load losses in induction motors is an important part of the efficiency estimation process. However, stray-load losses have several components which are difficult to isolate and calculate. Consequently, they are more readily determined by test. IEEE Standard 112-1996 recommends the testing of electrical induction motors at...
    Resource Type:
    Masters Thesis
    Full Text:
    : EVALUATION OF THE STRAY LOAD LOSSES FOR A THREE-PHASE iNDUCTION MOTOR Abstract approved: K. Wallace The

  • 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

  • Computerised dynamic control of an ac dynamometer

    Creator:
    Rodrigues, Terence Keith
    Abstract:
    The Motor Systems Resource Facility (MSRF) at Oregon State University presently conducts a variety of steady state tests on Motors and Generators, with ratings of upto 300Hp.(225kW), using a dynamometer. The dynamometer consists of an induction motor fed by a power electronic converter. A control computer uses a serial link,...
    Resource Type:
    Masters Thesis
    Full Text:
    : Computerised Dynamic Control of an AC Dynamometer. Abstract approved: an K. Wallace The Motor Systems