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  • DC bus capacitor discharge of permanent magnet synchronous machine drive systems for hybrid/electric vehicles

    Creator:
    Jin, Lei
    Abstract:
    Permanent magnet synchronous machines (PMSMs) are widely used in electric vehicles and hybrid electric vehicles to propel the wheels. Various control strategies have been developed for PMSM drive systems to achieve both high efficiency and safe operation. In a PMSM drive system, generally the high voltage battery and the power...
    Resource Type:
    Masters Thesis
    Full Text:
    the power converter based on the current, voltage, position and speed of the AC electric machine

  • Equivalent circuit modeling of on-chip magnetic devices based on terminal measurements

    Creator:
    Gaskill, Steven G.
    Abstract:
    The addition of thin-film alloy magnetic materials to integrated circuit processing enables a number of novel monolithic circuits. Examples include fully integrated magnetic field sensors, signal and power galvanic isolation circuits, and power supplies on chip (PwrSoC). There are several benefits to integrating these traditionally off-chip devices, including improved manufacturability,...
    Resource Type:
    Dissertation
    Full Text:
    captures the current with an error of 3.3% and power efficiency to with 5.6% error when compared to field

  • TIMR : Time Interleaved Multi Rail

    Creator:
    Ruggeri, Thomas L.
    Abstract:
    This work presents a new energy saving technique for modern digital designs. We propose Time Interleaved Multi-Rail (TIMR) - a method for providing two dynamic supply rails to a circuit. This technique uses the first supply rail to mask the transition delay while changing the voltage of the second rail....
    Resource Type:
    Masters Thesis
    Full Text:
    . This work concludes with comparisons to current energy saving techniques. c©Copyright by Thomas L

  • Development of two-variable maximum power point tracking control for ocean wave energy converters utilizing a power analysis and data acquisition system

    Creator:
    Amon, Ean A.
    Abstract:
    Ocean wave energy shows great potential as a developing form of renewable energy. However, challenges arise in maturing this technology to achieve cost-effective energy conversion. Development and testing of wave energy converters can be problematic due to the harsh environment in which they are operated. To promote development of this...
    Resource Type:
    Dissertation
    Full Text:
    current comparison for experimental and simulation passive rectifier results

  • Towards reliable and survivable ocean wave energy converters

    Creator:
    Brown, Adam C.
    Abstract:
    Ocean wave energy is a new and developing field of renewable energy with great potential. The energy contained in one meter of an average wave off the coast of Newport Oregon could supply dozens of homes with electricity. However, ocean waves are usually quite irregular which leads to large bursts...
    Resource Type:
    Masters Thesis
    Full Text:
    current all produce significant loading on any device that calls the ocean home [1,2]. It is

  • Evaluation of the performance of a taut-moored dual-body direct-drive waveenergy converter through numerical modeling and physical testing

    Creator:
    Elwood, David E.
    Abstract:
    With energy prices rising and increasing concern about the influence of fossil fuels on climate change, wave energy systems are on the verge of commercial implementation. These first generation wave energy converters utilize either pneumatics or hydraulics to convert the mechanical energy of waves into electricity. For the last several...
    Resource Type:
    Masters Thesis
    Full Text:
    LIST OF FIGURES Page Figure 1.1 Current commercial wave energy conversion devices a

  • Novel design and implementation of a permanent magnet linear tubular generator for ocean wave energy conversion

    Creator:
    Prudell, Joseph H.
    Abstract:
    The world’s energy consumption is growing at an alarming rate and the need for renewable energy is apparent now more than ever. Estimates have shown that optimization of the extraction of energy from the ocean could significantly aid the world’s quest for sustainable and affordable energy services for all. From...
    Resource Type:
    Masters Thesis
    Full Text:
    .........................................................................................1 1.2 Current Technological Developments

  • A novel control design for a wave energy converter

    Creator:
    Schacher, Alphonse A.
    Abstract:
    Ocean wave energy is rapidly becoming a field of great interest in the world of renewable energy. Significant advancements in design and technology are being made to make wave energy a viable alternative for our growing energy demands. The two major hurdles for ocean wave energy to make a significant...
    Resource Type:
    Masters Thesis
    Full Text:
    4.1.3 Current Limit……………………………………… 31 4.1.4 Maximum Power Limit…………………………… 32 4.2 Control Design

  • Novel control of a permanent magnet linear generator for ocean wave energy applications

    Creator:
    VanderMeulen, Aaron H.
    Abstract:
    Wave energy conversion devices are a rapidly growing interest worldwide for the potential to harness a sustainable and renewable energy source. Due to the oscillatory nature of ocean waves, the power generated from a permanent magnet linear generator (PMLG) for ocean wave energy conversion is pulsed. Focusing on direct drive...
    Resource Type:
    Masters Thesis
    Full Text:
    ...........................................................................................35 3.5(f) Rectifier dc bus current

  • Hybrid electric vehicle active rectifier performance analysis

    Creator:
    Amon, Ean A.
    Abstract:
    In advanced hybrid electric vehicle development, performance and dependability are essential considerations in the design process. High efficiency is crucial in a successful design and fault tolerance is necessary to provide limp-home capability under faulted operating conditions. The reduction of electromagnetic interference is mandatory to reduce interference in communications and...
    Resource Type:
    Masters Thesis
    Full Text:
    of several generator and active rectifier configurations for use in military hybrid electric