GAN LIGHT EMISSION CONTROLLED DC-DC CONVERTER

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dc.contributor.advisorWeatherford, Todd R.
dc.contributor.advisorCorzine, Keith, UC Santa Cruz
dc.contributor.authorJohnston, Justin D.
dc.contributor.departmentElectrical and Computer Engineering (ECE)
dc.contributor.secondreaderPorter, Matthew A.
dc.date.accessioned2023-02-14T04:22:45Z
dc.date.available2023-02-14T04:22:45Z
dc.date.issued2022-12
dc.description.abstractThis work demonstrates the very first implementation of electroluminescence from a gallium nitride vertical diode as a feedback mechanism for real-time current control of a power converter. Current estimation via electroluminescence provides a galvanically isolated sensor capability that is not susceptible to electromagnetic interference, which is inherently produced in switch mode power supplies. The light feedback is converted to an electrical signal that is further digitally filtered to construct a 3D current calibration surface. This surface converts duty cycle and light signal intensity into a real-time current estimation utilized as a feedback parameter in a buck converter control system. The accuracy of current estimation is shown to be within 5% of steady-state current over various load conditions. Transient-state response was also demonstrated for step changes in commanded current and voltage within the power converter. Methods of increasing accuracy and reducing current estimation delay time are discussed.en_US
dc.description.distributionstatementApproved for public release. Distribution is unlimited.en_US
dc.description.serviceLieutenant, United States Navyen_US
dc.identifier.curriculumcode590, Electronic Systems Engineering
dc.identifier.thesisid38386
dc.identifier.urihttps://hdl.handle.net/10945/71485
dc.publisherMonterey, CA; Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.authorgallium nitrideen_US
dc.subject.authorbuck converteren_US
dc.subject.authorGaNen_US
dc.subject.authorElectroluminescenceen_US
dc.subject.authorwide bandgapen_US
dc.subject.authorSiCen_US
dc.subject.authorsilicon carbideen_US
dc.subject.authorSMPSen_US
dc.titleGAN LIGHT EMISSION CONTROLLED DC-DC CONVERTERen_US
dc.typeThesisen_US
dspace.entity.typePublication
etd.thesisdegree.disciplineElectrical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.nameMaster of Science in Electrical Engineeringen_US
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