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Flying Capacitor Multilevel Flyback Converter

Graziani, Santino (2019) Flying Capacitor Multilevel Flyback Converter. Master's Thesis, University of Pittsburgh. (Unpublished)

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This work presents the development of a Flying Capacitor Multilevel Flyback Converter (FCMFC) that provides easily scalable peak output voltage for pulsed power. Based on a combination of the flyback and flying capacitor multilevel (FCML) boost converter topologies, the FCMFC achieves faster slew rates and peak power than previous pulsed power converters. The new converter improves on the conversion ratio of the flyback converter by a multiple of the number of switched-diode-capacitor (SDC) cells. It distributes the high voltage gain across the SDCs, lowering device stresses and reducing the required magnetic component size compared to existing architectures. This makes FCMFC very attractive for DC-DC steady-state boosting applications. To further this point the converter is analyzed in steady-state continuous conduction mode (CCM) for component sizes and stresses. An FCMFC was developed to boost a 10V input into 1000V output with half of the devices needed as compared to an existing FCML topology in the literature. Another was developed for pulsed power to produce 36kV pulses at 8kV/μs, with a
50% decrease in the magnetic component size compared to an existing architecture from the literature.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Graziani, Santinosfg10@pitt.edusfg10
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairGrainger, Brandonbmg10@pitt.edubmg10
Committee MemberReed, Gregorygfr3@pitt.edugfr3
Committee MemberMao, Zhi-Hongzhm4@pitt.eduzhm4
Date: 23 January 2019
Date Type: Publication
Defense Date: 12 June 2018
Approval Date: 23 January 2019
Submission Date: 14 October 2018
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 61
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Electrical Engineering
Degree: MS - Master of Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: pulsed power, DC-DC, boosting, flyback, power electronics
Date Deposited: 23 Jan 2019 16:11
Last Modified: 23 Jan 2019 16:11


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