Date of Award
Master of Science (MS)
Electrical and Computer Engineering (Holcomb Dept. of)
Dr. Christopher Edrington
Dr. Gokhan Ozkan
Dr. Zheyu Zhang
In the field of power electronics, the control of rectifiers is a crucial area of study. Rectifiers are used to convert AC power into DC power, and are commonly used in a wide range of applications, including renewable energy systems, industrial automation, and consumer electronics. However, in medium and high-power systems when multiple rectifiers are connected in parallel to a DC bus, stability issues can arise, including voltage fluctuations, zero sequence circulating current, and thermal imbalance.
Achieving stable DC bus voltage is essential for maintaining the proper functioning of electronic devices, while suppressing zero sequence current is necessary for protecting the power electronics equipment from damage and ensuring that a power system's performance is not degraded. Active thermal management is important for ensuring the longevity and reliability of the power electronics equipment.
To achieve these objectives, advanced control techniques must be developed and implemented. This research investigates the use model predictive control to achieve three objectives in two paralleled rectifier each control cycle: DC voltage stability, zero sequence suppression, and thermal balance. These objectives are critical for ensuring the reliable and efficient operation of power electronics systems.
The findings of this research will contribute to the development of more reliable and efficient power electronics systems, with the Navy's (power electronic building block) PEBB systems particularly in mind. However, this research can be extended to other medium and high-powered applications in modern technology too such as missile defense systems, data centers, and uninterruptible power supplies.
Dobey, Justin, "The Application of Model Predictive Control on Paralleled Converters for Zero Sequence Current Suppression and Active Thermal Management" (2023). All Theses. 4085.
Author ORCID Identifier