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    Design of a high-efficiency switching power amplifier for driving piezoelectric transducers

    Author
    Curt, Edward Morgan
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    Curt_rpi_0185N_10509.pdf (3.197Mb)
    Thesis defense slide deck (8.040Mb)
    Other Contributors
    Saulnier, Gary J.; Scarton, Henry A.; Wozny, M. J. (Michael J.);
    Date Issued
    2014-12
    Subject
    Electrical engineering
    Degree
    MS;
    Terms of Use
    This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.;
    Metadata
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    URI
    https://hdl.handle.net/20.500.13015/4094
    Abstract
    Recently developed methods for wireless power transfer through metallic barriers using acoustic-electric channels require specialized amplifiers to drive their ultrasonic transducers. These channels operate at frequencies varying from 50 kHz to 1.5 MHz and present input impedance magnitudes from 50 to 1,000 Ohms. Requiring amplifiers to operate over this broad range of conditions while maintaining high levels of efficiency in high temperature environments presents a challenging set of design constraints.Two types of amplifier topologies are presented within this thesis: designs with and without galvanic isolation. Each design was researched, designed, and realized with custom printed circuit boards, and their performance was analyzed thoroughly. Design life was documented as the five individual revisions were developed and manufactured. Revisions are compared with one another and with how they fit into the specific requirements of the project application. Results include completed amplifier designs and working prototypes capable of delivering more than 50 W of power at greater than 98% efficiency, operating with up to 600 VDC supplies, driving a full range of ultrasonic transducer loads at various frequencies, and using components rated for 125 degrees C.;
    Description
    December 2014; School of Engineering
    Department
    Dept. of Electrical, Computer, and Systems Engineering;
    Publisher
    Rensselaer Polytechnic Institute, Troy, NY
    Relationships
    Rensselaer Theses and Dissertations Online Collection;
    Access
    Restricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.;
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