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Ian_Fox.1221_MS_thesis.pdf (12.69 MB)

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Design and Applications of Hybrid Switches in DC-AC Power Converter Topologies

Fox, Ian Micah
http://rave.ohiolink.edu/etdc/view?acc_num=osu1543157006458193

Abstract Details

2018, Master of Science, Ohio State University, Electrical and Computer Engineering.
The advent of SiC based switch technology has led to high efficiency, low weight power electronics. However, these switches lack the maximum current ratings of their Si predecessors, making them ill-suited for single-switch, high-current applications. Hybrid switches place traditional Si devices in parallel with SiC devices to obtain high efficiency while also maintaining a high current limit. To do so, hybrid switches need to be carefully selected based on the demands of the design, using datasheet values from both switches. Hybrid switches also need a control scheme that can safely and efficiently operate the pair of switches. This control scheme takes advantage of zero voltage switching to control devices with higher switching loss at approximately zero voltage, minimizing switching loss. To protect SiC devices, multiple zones of switching are established based on maximum current ratings of the devices, with the switching scheme changing based on the zone. Various switch pairs are tested for conduction losses, switching losses, and zone 2/ zone 3 control in both a DC-DC converter and a DC-AC inverter. Switch efficiency and power density are calculated based on these values to determine the advantages and disadvantages of using hybrid switches in a specific project.
Julia Zhang (Advisor)
Mahesh Illindala (Committee Member)
108 p.
Electrical Engineering; Energy; Engineering
Hybrid Switch; Power Electronics; Converter Topology; Hybrid; Switching Scheme; Zero Voltage Switching; Zonal Control; Hybrid Characteristic Curve; Power Systems

Recommended Citations

Citations

  • Fox, I. M. (2018). Design and Applications of Hybrid Switches in DC-AC Power Converter Topologies [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543157006458193

    APA Style (7th edition)

  • Fox, Ian. Design and Applications of Hybrid Switches in DC-AC Power Converter Topologies. 2018. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1543157006458193.

    MLA Style (8th edition)

  • Fox, Ian. "Design and Applications of Hybrid Switches in DC-AC Power Converter Topologies." Master's thesis, Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543157006458193

    Chicago Manual of Style (17th edition)

osu1543157006458193
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© 2018, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.