Search Constraints

Start Over
Filtering by: Subject Electric motors -- Design and construction Remove constraint Subject: Electric motors -- Design and construction Decade 1990-1999 Remove constraint Decade: 1990-1999

Search Results

  • 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:
    evaluation of the desired specifications to design, simulation, construction, and finally to testing. Using

  • 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:
    distribution of the windings is important in the design and construction of the machine. Table 2-1 shows

  • Testing and modeling of the single-phase Written-Pole Motor

    Creator:
    Chis, Lucian
    Abstract:
    A relatively new development in the electric machines field has been the written-pole technology, of which the latest product is the large single-phase electric motor, the single phase Written-Pole Motor (WPM). The WPM is a synchronous, permanent-magnet single-phase motor having a weak rotor cage for start-up which in addition exhibits...
    Resource Type:
    Masters Thesis
    Full Text:
    Testing and modeling of the single-phase Written-Pole Motor

  • Use of multiple loop model for brushless doubly fed machine rotor design

    Creator:
    Kemp, Alson R.
    Abstract:
    The Brushless Doubly Fed Machine (BDFM) is receiving attention as a candidate for use in adjustable speed drives (ASDs) and variable speed generators (VSGs). With a large percentage of a drive or generator system's cost due to power electronics content, considerable research has been conducted to find drives in which...
    Resource Type:
    Masters Thesis
    Full Text:
    dynamic model, is relatively simple and runs very quickly. For motor design and investigation of motor

  • 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:
    more effective stator and rotor design was then developed by Creedy [6] for this system. The idea 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:
    directed at optimizing the design of the BDFM and investigating areas of commercial feasibility. One

  • A low cost AC motor drive for battery powered applications

    Creator:
    Wiley, Brian
    Abstract:
    Environmental concerns have renewed the interest in electric vehicles. To gain widespread use, electric vehicles will also have to offer good performance and be reasonably priced. AC drive systems using modern semiconductors can provide efficient operation at the required power levels, but their cost at present is still too high....
    Resource Type:
    Masters Thesis
    Full Text:
    , operating costs, and performance. The electric motor is far simpler than the internal combustion engine

  • Direct torque control for brushless doubly-fed machines

    Creator:
    Brassfield, William R.
    Abstract:
    The Brushless Doubly-Fed Machine (BDFM) has recently become an important research topic in the field of variable-speed AC drives. In recent studies, the BDFM has shown significant potential for improving the reliability and performance of AC drive systems, as well as reducing total system cost. While the BDFM offers several...
    Resource Type:
    Masters Thesis
    Full Text:
    of the motor itself. Third, the BDFM has a wide operating range in terms of speed and torque. The

  • Design studies relating to the brushless doubly-fed automotive alternator

    Creator:
    Ravi, D. K.
    Abstract:
    The alternators in today's automobiles are of the claw-pole or Lundell construction, which is a readily manufactured, low-cost derivative of the conventional rotating dc field synchronous generator. The efficiency of the Lundell system is low due to a complicated magnetic circuit of predominantly solid steel and a high windage rotor...
    Resource Type:
    Masters Thesis
    Full Text:
    Electrical and Computer Engineering presented on June 8, 1992. Title : Design Studies Relating to the Brush

  • Hardware design and protection issues in an AC/AC converter

    Creator:
    Faveluke, Alex
    Abstract:
    An AC/AC converter has been designed and implemented for the purpose of providing a modular drive system with a Brushless Doubly-Fed Machine (BDFM.) This converter is to be used in laboratory testing and also as part of a demonstration system in the field. All hardware needed to start and run...
    Resource Type:
    Masters Thesis
    Full Text:
    Hardware design and protection issues in an AC/AC converter