Design and Assessment of an Embedded Die PCB-Based Traction Inverter

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dc.contributor.authorSpieler, Matthiasen
dc.contributor.committeechairBurgos, Rolandoen
dc.contributor.committeechairDong, Dongen
dc.contributor.committeememberDimarino, Christina Marieen
dc.contributor.committeememberWang, Anboen
dc.contributor.committeememberLu, Guo Quanen
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2026-03-21T08:00:19Zen
dc.date.available2026-03-21T08:00:19Zen
dc.date.issued2026-03-20en
dc.description.abstractgeneralElectric vehicles rely on electronic hardware that converts stored battery energy into controlled power for the motor. This hardware, called an inverter, must be inexpensive, highly efficient, and compact. National targets call for very high efficiency, high power per unit volume, and low cost. This work focuses on reaching the required power-density target by redesigning how the inverter's switching devices are built into the circuit board. Embedding the semiconductor devices directly into the board allows the use of lower-voltage versions of the same device type, which reduces electrical resistance and cuts energy loss. The embedded approach also supports faster switching, which further improves efficiency. A low-cost current-measurement method is also developed so that an expensive sensor normally used in commercial inverters can be removed. Two embedded die PCB prototypes are compared with standard industrial designs. The embedded versions reduce physical volume substantially and show better behavior in electrical switching, heat flow, and electromagnetic noise. A compact current-sensing coil is then designed directly into the circuit board. It measures rapid current changes and steady operating current with high accuracy, enabling the removal of the conventional Hall-effect sensor. Finally, these design principles are used to build a high-power inverter that reaches the targeted power density while operating under load.en
dc.description.degreeDoctor of Philosophyen
dc.format.mediumETDen
dc.identifier.othervt_gsexam:45528en
dc.identifier.urihttps://hdl.handle.net/10919/142396en
dc.language.isoenen
dc.publisherVirginia Techen
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectSiC MOSFETen
dc.subjectembedded die PCBen
dc.subjectRogowski coilen
dc.subjectcurrent sensoren
dc.subjecttraction inverter designen
dc.titleDesign and Assessment of an Embedded Die PCB-Based Traction Inverteren
dc.typeDissertationen
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.nameDoctor of Philosophyen

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