The High-Power Efficiency and High-Power Density Converters for Data Center Application System
Date of Award
8-1-2024
Degree Name
Ph.D. in Electrical and Computer Engineering
Department
Department of Electrical and Computer Engineering
Advisor/Chair
Dong Cao
Abstract
This dissertation focuses on the new energy resources based power supply system for the Datacenter application. A family of the matrix auto-transformer switched capacitor DC-DC converters and a decoupled active and reactive power control method for cascaded microinverter system are proposed in this dissertation. The matrix auto-transformer switched capacitor DC-DC converters are mainly for the 48V DC bus structure which is proposed by Google company, and they convert the 48V DC bus voltage to different intermediate bus voltages, i.e. 6V, 5V, 3.2V and so on. Moreover, the converters mainly focus on the high-efficiency and high-power density goals which are very important indexes in the datacenter application, especially with the dramatic increase demand of the artificial intelligence. The proposed converters in this dissertation can further increases the performance of the DC-DC converters compared to the state of art converters. The control method for the cascaded microinverter systems can decouple the active and reactive power distribution among different submodules, which means the more flexible power arrangement among different submodules, and the commutations among different submodules are also saved. As a result, not only the whole system cost but also the robustness get largely improved.
Keywords
Electrical Engineering
Rights Statement
Copyright © 2024, author.
Recommended Citation
Qiu, Maohang, "The High-Power Efficiency and High-Power Density Converters for Data Center Application System" (2024). Graduate Theses and Dissertations. 7424.
https://ecommons.udayton.edu/graduate_theses/7424
