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  • The design of delta-sigma modulators for multi-standard RF receivers

    Creator:
    Liu, Mingliang
    Abstract:
    The transition from second-generation (2G) to third-generation (3G) wireless cellular and cordless telephone systems requires multi-standard adaptability in a single RF receiver equipment. An important answer to this request is the use of Delta-Sigma modulators for IF-to-baseband conversion, which will satisfy the dynamic range requirements for digital signal processing, and...
    Resource Type:
    Masters Thesis
    Full Text:
    to acknowledge the other members of my committee, Dr. Un-Ku Moon and Dr. Molly H. Shor for taking

  • Aseismic performance of a cable-stayed structure with decentralized H[infinity] control

    Creator:
    Chńg, Guan B.
    Abstract:
    The dissertation uses state-of-the-art structural engineering theories, in parallel with the modern and still-developing control theory of electrical engineering to mitigate the vibratory responses of a double-stayed bridge subjected to strong earthquake ground motions. First, a nonlinear finite element model of the double-stayed bridge subjected to non-uniform (multi-support) earthquake excitations...
    Resource Type:
    Dissertation
    Full Text:
    . Miller, Dr. Solomon C. S. Yim, Dr. Molly H. Shor, and Dr. Donald C. Solmon, for their interest and

  • A remotely controlled power quality test platform for characterizing the ride-through capabilities of adjustable speed drives

    Creator:
    Matheson, Evelyn
    Abstract:
    With the increased attention on high efficiency and controllability of industrial processes, as well as reduced weight, volume and cost of consumer products, the applications of nonlinear power electronic converters such as adjustable speed drives (ASDs) are showing a rapid rise. Power Quality (PQ) is becoming an increasing concern with...
    Resource Type:
    Masters Thesis
    Full Text:
    MSRF. I would also like to thank the other members of my program committee, Dr. Molly Shor and Dr

  • 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 work and other topics. Special thanks to Dr. Alan Wallace, Dr. Molly Shor, Dr. G. C

  • 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:
    have met in Portland. I would also like to thank Dr. Annette von Jouanne, Dr. Molly Shor, and Dr

  • Active power filter for the cancellation of harmonic line current distortion

    Creator:
    Merk, Marcel
    Abstract:
    With the increased attention on high efficiency and energy savings, power electronic energy conversion equipment is increasingly incorporated in all levels of the power system. The drawback of such equipment is the generation of nonsinusoidal currents in the power distribution network due to the nonlinear operation. Harmonic currents may distort...
    Resource Type:
    Masters Thesis
    Full Text:
    , Dr. Molly Shor, Dr. Alan Wallace, and Dr. Jim Coakley. I would like to thank Evelyn Matheson and

  • Development of a variable-speed, doubly-fed wind power generation system

    Creator:
    Brune, Christopher S.
    Abstract:
    Generation of electricity from the wind is becoming increasing popular as an environmentally responsible resource. Current methods for generating electricity from the wind involve the use of fixed-speed generators. However, the use of variable-speed generators increases the amount of energy that can be extracted from the wind. Most variable-speed technologies...
    Resource Type:
    Masters Thesis
    Full Text:
    . Molly Shor, Dr. Alan Wallace, and Dr. Bill Warnes. A special thanks goes to my colleague Brian Wiley

  • The implicit derivative matching technique for Maxwell's equations in complex heterogeneous media

    Creator:
    Kirk, Anna Rae
    Abstract:
    We construct an implicit derivative matching (IDM) technique for restoring the accuracy of the Yee scheme for Maxwell's equations in dispersive media with material interfaces in one dimension. We consider media exhibiting orientational polarization, which are represented using a Debye dispersive model, examples of which are water and living tissue....
    Resource Type:
    Masters Thesis
    Full Text:
    Dr. Nathan Gibson, Dr. Malgorzata Peszynska, and Dr. Molly Shor for serving on my committee

  • Timing jitter and phase noise in electronic oscillators

    Creator:
    Zhang, Chengwei
    Abstract:
    In the first part of this dissertation, low frequency l/f or flicker noise in the frequency range of Hz to kHz has been identified and demonstrated to be described by temperature fluctuations in heat conduction in bipolar transistors operated at higher power densities. This noise phenomenon is not described by...
    Resource Type:
    Dissertation
    Full Text:
    Settaluri, Professor Molly Shor, Professor Thomas G. Dietterich for spending their valuable time as my

  • Scaled modeling and simulation of ocean wave linear generator buoy systems

    Creator:
    Gore, Ganesh P.
    Abstract:
    Accurate scaled modeling and simulation are critical to advancing ocean wave linear generator buoys. A 100th scaled model of ocean wave generator buoy systems is analyzed by solving the Navier-Stokes equations. These equations are numerically solved using Computational Fluid Dynamics (CFD) by implementing the front capturing method. In this thesis,...
    Resource Type:
    Masters Thesis
    Full Text:
    suggestions during discussion meetings. I would also like to thank Dr. Molly Shor, Dr. Huaping Liu and Dr