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  • 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:
    Frequency-domain, parameter estimation for a brushless

  • 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:
    : Analysis of Brushless Doubly-Fed. Stand-Alone Generator Systems. Abstract approved: Gerald C. Alexander

  • 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:
    development of dynamic control strategies for the brushless doubly-fed machine (BDFM). A simple open-loop

  • 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

  • Operating characteristics of the brushless doubly fed machine

    Creator:
    Qin, Bi-de
    Abstract:
    The brushless doubly fed machine (BDFM), or self-cascade single-frame machine, can operate asynchronously or synchronously over a wide speed range. In this sense the machine becomes an adjustable speed synchronous machine. Such machines may become unstable in certain regions of operation. Analyzing its steady-state performance and determining its stable operating...
    Resource Type:
    Masters Thesis
    Full Text:
    construction the rotor of the brushless doubly fed machine closely resembles a conventional induction motor

  • 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:
    investigation and construction of the linear brushless doubly-fed motor was first propounded at Oregon State

  • 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:
    % rated load) 27 Figure 4.5 Electric loading of air-gap periphery of induction motor 30 Figure 4.6 Slot

  • The development of commercially viable brushless doubly-fed machines

    Creator:
    Bellagh, Robert L.
    Abstract:
    Basic operation, as well as successful development, of the Brush less Doubly-fed Machine (BDFM) has been documented, and research has turned from proof of concept and early development to the more practical direction of increased manufacturability to prove industrial viability. Previous research centered on using standard induction motor stators along...
    Resource Type:
    Masters Thesis
    Full Text:
    The development of commercially viable brushless doubly-fed

  • Analysis and design of the brushless doubly-fed machine

    Creator:
    Rochelle, Patrick R.
    Abstract:
    Use of conventional induction machines (IM) in adjustable speed drives (ASD) has increased in recent years. Electronic power processing has facilitated this increased use. The IM is an inexpensive and robust machine, but when used as part of an ASD, the cost of the system increases due to the inclusion...
    Resource Type:
    Masters Thesis
    Full Text:
    : Analysis and Design of the Brushless Doubly-Fed Machine Abstract approved: ( Alah-'K. liace Use of

  • Characterization studies and industrial control development for the brushless doubly-fed machine

    Creator:
    Koch, Brian
    Abstract:
    This thesis presents the development of a supervisory controller for a pre-commercial Brushless Doubly-Fed Machine (BDFM) drive system. In addition, characterizations of new diecast rotors for the BDFM are presented. Using the characterization results from the new rotors, a control scheme was developed to allow a BDFM to be packaged...
    Resource Type:
    Masters Thesis
    Full Text:
    : Characterization Studies and Industrial Control Development for the Brushless Doubv Fed Machine. Abstract