Dissertation
DESIGN AND IMPLEMENTATION OF HIGH-EFFICIENCY DC-DC AND GRID CONNECTED POWER CONVERTERS
Doctor of Philosophy (PhD), Washington State University
01/2020
Handle:
https://hdl.handle.net/2376/118073
Abstract
Power Electronics converters used in different applications such as photovoltaic systems and
electric vehicles require low size and high-efficiency converters with a step-down or step-up
voltage ratio depends on their applications. Resonant switched-capacitor converters (R-SCC)
are an alternative to inductor-based converters, known as buck or boost converters. These
topologies reduce the size of the power converters, and their resonant operation reduces the
switching losses of switching devices (higher efficiency) and mitigates the high spike-current
over switching components during switching instants. In addition, DC sources are integrated
into the power system through voltage-source converters (VSC). For this application, there is
a need for a controller to regulate the output power and voltage of VSCs.
This dissertation studies different operating modes of a multi-stage R-SCC for step-down
and step-up voltage ratios. It also proposes a systematic method to calculate the
output characteristics of the proposed resonant converters. In addition, a voltage controller
is proposed to regulate the output voltage of the resonant converter while there is a variation
in input voltage or load. It also evaluates the performance of a controller for a VSC in the VSCbased
power system. All studies are verified by simulation and experimental results.
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Details
- Title
- DESIGN AND IMPLEMENTATION OF HIGH-EFFICIENCY DC-DC AND GRID CONNECTED POWER CONVERTERS
- Creators
- Seyedmohammad Mousavi
- Contributors
- Ali Mehrizi-Sani (Advisor)Anjan Bose (Committee Member)Noel Schulz (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Electrical Engineering and Computer Science, School of
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Number of pages
- 128
- Identifiers
- 99900581702701842
- Language
- English
- Resource Type
- Dissertation