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Improved Resonant Converters for Wide Voltage Range, High Current DC-DC and Universal AC-DC Applications
Data centers are the cornerstone of business in modern society and individual lives. Of similar significance to daily life is the external AC-DC power supply exemplified by the cell phone charger. In both applications, ...
Adaptive Critic-based Control of Voltage Source Converters in Microgrid Systems
(2014-11-11)
Control of microgrids, as the main building blocks of the future smart power grid, is an important problem which has initiated many research activities in recent years. The microgrid should appear to the power grid as a ...
System Identification and Adaptive Control for Grid-Connected Single-Phase AC Inverters
(2014-05-06)
This thesis presents adaptive control techniques to improve the stability and performance of grid-tied single-phase inverter systems. There are three main control systems involved in the conversion of DC to AC power: a ...
Control Techniques for a Single-Phase Bi-Directional Full-Bridge Active Rectifier for Vehicle-to-Grid and Grid-to-Vehicle Applications
(2014-07-04)
As electric vehicles (EV) continue to gain market traction, more research is being conducted in the control of the power conditioning system. This thesis focuses on control strategies for the front-end AC/DC converter. ...
Control of a Single-Phase Grid-Connected Voltage Source Inverter with LCL Filter
(2013-10-02)
This thesis presents new control approaches for improving the performance, stability, and efficiency of a single-phase grid-connected voltage source inverter (VSI) with an LCL filter that is used in renewable energy power ...
NOVEL HIGH POWER DENSITY TOPOLOGIES AND CONTROL FOR THE POINT-OF-LOAD (POL) APPLICATION
(2016-04-20)
High performance microprocessors are promoting the development of modern electronic devices such as smart phones and tablets. These microprocessors have stricter requirement on the power supplies in terms of efficiency and ...
EFFICIENT CONTROL OF THE SERIES RESONANT CONVERTER FOR HIGH FREQUENCY OPERATION
(2012-09-10)
Improved transient performance and converter miniaturization are the major driving factors behind high frequency operation of switching power supplies. However, high speed operation is limited by topology, control, ...
A New DC UPS for DC Power Distribution System in Data Center
In recent years, the 380V DC and 48V DC distribution systems have been extensively studied for the latest data centers. It is widely believed that the 380V DC system is a very promising candidate because of its lower cable ...
Technologies for Improving Performance of Indoor Dimmable Light-Emitting Diode (LED) Drivers
With the rapid transformation taking place in lighting technology, light-emitting diode (LED) becomes the new promising light source for the future world. In the recent years, indoor application becomes the new battlefield ...
Advanced Control Technologies for Voltage Regulators of Next-Generation Microprocessors to Achieve Fast Dynamic Response Performance
(2016-11-02)
With the development of computing technology, the demand for next-generation voltage regulators (VRs) to power the modern microprocessors is rising. The next-generation VRs should be more compact and perform with faster ...