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A three-phase hybrid dc-ac inverter system utilizing hysteresis controlWhite, Terence H. 06 1900 (has links)
Approved for public release; distribution is unlimited / The naval vessels of the future will require lighter, more compact, and more versatile power electronics systems. With the advent of the DC Zonal Electrical Distribution System, more innovative approaches to the conversion of the dc bus power to ac power for motor drives will enhance the efficiency and warfighting capability of tomorrow's ships. This thesis explores the concept of a hybrid dc-ac power converter that combines a hysteresis controlled inverter with a six-step bulk inverter. A six-step bulk inverter is built from discrete components and tested in simulation and hardware. The two inverters are connected in parallel to provide a high-fidelity current source for a three-phase load. The addition of the hysteresis inverter to the bulk inverter adds a closed current loop for more robust control and improves the quality of the output load current. / Major, United States Marine Corps
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A low cost AC motor drive for battery powered applicationsWiley, Brian 19 August 1993 (has links)
Environmental concerns have renewed the interest in electric vehicles. To gain
widespread use, electric vehicles will also have to offer good performance and be
reasonably priced. AC drive systems using modern semiconductors can provide
efficient operation at the required power levels, but their cost at present is still too
high. This paper discusses the development of an AC induction motor drive system
which potentially lowers cost by using a digital controller. The controller is shown to
implement a high performance field-oriented control, while keeping a low parts count
by maximizing use of interface circuits which are integrated onto the microprocessor
chip. Cost is further reduced by designing the system to reuse motor control
components for battery charging and eliminate the need for external circuits.
Experimental results are presented for a low power prototype system. / Graduation date: 1994
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A three-phase hybrid dc-ac inverter system utilizing hysteresis control /White, Terence H. January 2004 (has links) (PDF)
Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, June 2004. / Thesis advisor(s): Robert Ashton. Includes bibliographical references (p. 73-74). Also available online.
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Chaoization and stabilization of electric motor drives and their industrial applicationsWang, Zheng, January 2008 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2008. / Includes bibliographical references (p. 169-182) Also available in print.
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Modeling, analysis and design of integrated starter generator system based on field oriented controlled induction machinesLiu, Jingbo, January 2005 (has links)
Thesis (Ph. D.)--Ohio State University, 2005. / Title from first page of PDF file. Includes bibliographical references (p. 170-177).
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A non-conventional multilevel flying-capacitor converter topologyGulpinar, Feyzullah January 2014 (has links)
Indiana University-Purdue University Indianapolis (IUPUI) / This research proposes state-of-the-art multilevel converter topologies and their
modulation strategies, the implementation of a conventional flying-capacitor converter
topology up to four-level, and a new four-level flying-capacitor H-Bridge converter
confi guration. The three phase version of this proposed four-level flying-capacitor
H-Bridge converter is given as well in this study. The highlighted advantages of the
proposed converter are as following: (1) the same blocking voltage for all switches
employed in the con figuration, (2) no capacitor midpoint connection is needed, (3)
reduced number of passive elements as compared to the conventional solution, (4)
reduced total dc source value by comparison with the conventional topology.
The proposed four-level capacitor-clamped H-Bridge converter can be utilized as
a multilevel inverter application in an electri fied railway system, or in hybrid electric
vehicles.
In addition to the implementation of the proposed topology in this research, its
experimental setup has been designed to validate the simulation results of the given
converter topologies.
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