Description
This thesis presents a power harvesting system combining energy from sub-cells of
multi-junction photovoltaic (MJ-PV) cells. A dual-input, inductor time-sharing boost
converter in continuous conduction mode (CCM) is proposed. A hysteresis inductor current
regulation in designed to reduce cross regulation caused by inductor-sharing in CCM. A
modified hill-climbing algorithm is implemented to achieve maximum power point
tracking (MPPT). A dual-path architecture is implemented to provide a regulated 1.8V
output. A proposed lossless current sensor monitors transient inductor current and a time-based power monitor is proposed to monitor PV power. The PV input provides power of
65mW. Measured results show that the peak efficiency achieved is around 85%. The
power switches and control circuits are implemented in standard 0.18um CMOS process.
multi-junction photovoltaic (MJ-PV) cells. A dual-input, inductor time-sharing boost
converter in continuous conduction mode (CCM) is proposed. A hysteresis inductor current
regulation in designed to reduce cross regulation caused by inductor-sharing in CCM. A
modified hill-climbing algorithm is implemented to achieve maximum power point
tracking (MPPT). A dual-path architecture is implemented to provide a regulated 1.8V
output. A proposed lossless current sensor monitors transient inductor current and a time-based power monitor is proposed to monitor PV power. The PV input provides power of
65mW. Measured results show that the peak efficiency achieved is around 85%. The
power switches and control circuits are implemented in standard 0.18um CMOS process.
Details
Title
- Single-inductor, dual-input CCM boost converter for multi-junction PV energy harvesting
Contributors
- Peng, Qirong (Author)
- Kiaei, Sayfe (Thesis advisor)
- Bakkaloglu, Bertan (Committee member)
- Ogras, Umit Y. (Committee member)
- Arizona State University (Publisher)
Date Created
The date the item was original created (prior to any relationship with the ASU Digital Repositories.)
2017
Subjects
Resource Type
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Note
- thesisPartial requirement for: M.S., Arizona State University, 2017
- bibliographyIncludes bibliographical references (pages 42-43)
- Field of study: Engineering
Citation and reuse
Statement of Responsibility
by Qirong Peng