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Filtering by: Subject Electric motors, Synchronous Remove constraint Subject: Electric motors, Synchronous Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • A study of the effect of the rotor coil couplings of a synchronous machine on its predicted transient response

    Creator:
    Nehrir, Mohammad Hashem
    Abstract:
    The effect of the mutual inductances between the rotor coils of a synchronous machine on its defined reactances and predicted transients are investigated. Two linearized models of the machine are considered. One uses the Laplace-Transform approach, with minimum number of assumptions on the inter-coil couplings, in developing a model for...
    Resource Type:
    Dissertation
    Full Text:
    synchronous machine on its predicted transient response AN ABSTRACT OF THE THESIS OF Mohammad Hashem

  • Identification of synchronous machine parameters

    Creator:
    Shaban, Ali Omar
    Abstract:
    The synchronous machine is an essential component of a power system and determination of its parameters accurately is an important task in securing adequate modes of operation through certain control strategies. An estimation technique based on the Powell algorithm was evaluated for the identification of these parameters on the basis...
    Resource Type:
    Dissertation
    Full Text:
    SYNCHRONOUS MACHINE PARAMETERS I. INTRODUCTION 1.1 Literature Review As the size and complexity of electric

  • 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:
    pulse-width modulated strategies. A brushless dc motor with trapezoidal induced voltages and complex

  • Analysis of brushless doubly-fed, stand-alone generator systems

    Creator:
    Gorti, Bhanuprasad V.
    Abstract:
    This thesis introduces a Brushless Doubly-Fed Machine (BDFM), stand-alone generator system. Development of a BDFM current-forced model, along with the analysis of air gap power distribution between the two stator windings and the rotor circuit, pave the way for the characterization and analysis of stand-alone generator systems. The main disadvantage...
    Resource Type:
    Dissertation
    Full Text:
    -alone power systems". The systems based on synchronous generators often use the rotary converter (motor

  • Frequency-domain, parameter estimation for a brushless, doubly-fed machine

    Creator:
    Ramchandran, Ashok
    Abstract:
    A Brushless, Doubly Fed Machine (BDFM) attempts to combine the advantages of conventional induction and synchronous types of electrical machines by its unique architecture. The validation of BDFM designs in an actual test environment requires the estimation of the BDFM model parameters from actual experimentation. Accurate values for the parameters...
    Resource Type:
    Dissertation
    Full Text:
    synchronous types of electrical machines by its unique architecture. The validation of BDFM designs in an

  • Dynamic control of brushless doubly-fed machines

    Creator:
    Zhou, Dongsheng, 1964-
    Abstract:
    This thesis presents the development of dynamic control strategies for the brushless doubly-fed machine (BDFM). A simple open-loop scalar controller is first investigated and its response is found to be oscillatory. Using the speed feedback signal, an improved closed loop scalar control algorithm is designed. Steady state performance is controlled...
    Resource Type:
    Dissertation
    Full Text:
    Versus The Synchronous Angle 79 5.14 The BDFM Electric Torque Versus The Synchronous Angle 80 5.15

  • Performance optimization for doubly-fed generation systems

    Creator:
    Bhowmik, Shibashis
    Resource Type:
    Dissertation
    Full Text:
    dc machines. synchronous and induction machine technology as well as reluctance machines. While

  • Advanced propulsion systems for linear motion with high performance requirements

    Creator:
    Zhou, Xiaolin
    Abstract:
    Traditionally linear actuator applications are addressed by the use of hydraulic systems. The high maintenance cost and poor reliability will always be the most critical problem in the real applications. Benefited from both the high mechanical advantage of the roll screw and the simple structure of the switched reluctance motor,...
    Resource Type:
    Dissertation
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    the simple structure of the switched reluctance motor, a new SRM driven linear actuator is proposed

  • 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:
    of power converter compared with that of a conventional induction motor or synchronous motor ASD or