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Ultra-Efficient Cascaded Buck-Boost Converter

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Date Issued:
2017
Abstract/Description:
This thesis presents various techniques to achieve ultra-high-efficiency for Cascaded-Buck-Boost converter. A rigorous loss model with component non linearity is developed and validated experimentally. An adaptive-switching-frequency control is discussed to optimize weighted efficiency. Some soft-switching techniques are discussed. A low-profile planar-nanocrystalline inductor is developed and various design aspects of core and copper design are discussed. Finite-element-method is used to examine and visualize the inductor design. By implementing the above, a peak efficiency of over 99.2 % is achieved with a power density of 6 kW/L and a maximum profile height of 7 mm is reported. This converter finds many applications because of its versatility: allowing bidirectional power flow and the ability to step-up or step-down voltages in either direction.
Title: Ultra-Efficient Cascaded Buck-Boost Converter.
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Name(s): Ashok Pise, Anirudh, Author
Batarseh, Issa, Committee Chair
Mikhael, Wasfy, Committee Member
Sun, Wei, Committee Member
Kutkut, Nasser, Committee Member
University of Central Florida, Degree Grantor
Type of Resource: text
Date Issued: 2017
Publisher: University of Central Florida
Language(s): English
Abstract/Description: This thesis presents various techniques to achieve ultra-high-efficiency for Cascaded-Buck-Boost converter. A rigorous loss model with component non linearity is developed and validated experimentally. An adaptive-switching-frequency control is discussed to optimize weighted efficiency. Some soft-switching techniques are discussed. A low-profile planar-nanocrystalline inductor is developed and various design aspects of core and copper design are discussed. Finite-element-method is used to examine and visualize the inductor design. By implementing the above, a peak efficiency of over 99.2 % is achieved with a power density of 6 kW/L and a maximum profile height of 7 mm is reported. This converter finds many applications because of its versatility: allowing bidirectional power flow and the ability to step-up or step-down voltages in either direction.
Identifier: CFE0007277 (IID), ucf:52181 (fedora)
Note(s): 2017-12-01
M.S.E.E.
Engineering and Computer Science, Electrical Engineering and Computer Engineering
Masters
This record was generated from author submitted information.
Subject(s): Cascaded Buck Boost Converter -- Loss Model -- Component Non-Linearity -- Efficiency -- Finite Element Analysis -- Planar Nanocrystalline Inductor -- Soft Switching -- Zero Voltage Transition
Persistent Link to This Record: http://purl.flvc.org/ucf/fd/CFE0007277
Restrictions on Access: public 2018-06-15
Host Institution: UCF

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