FLEXIBLE HIGH-POWER MULTI DC-DC CONVERTERS FOR TRAINS SYSTEMS ARASH ABBASALIZA BOORA PHD THESIS QUEENSLAND UNIVERSITY OF TECHNOLOGY

FLEXIBLE HIGH-POWER MULTI DC-DC CONVERTERS FOR TRAINS SYSTEMS
ARASH ABBASALIZA BOORA PHD THESIS
QUEENSLAND UNIVERSITY OF TECHNOLOGY AUSTRALIA
LINK
http://eprints.qut.edu.au/33208/1/Arash_Boora_Thesis.pdf

Research, Design and Implementation of Auxiliary Power Supplies APS for the Light Rail Vehicles DMITRI VINNIKOV

Research, Design and Implementation of Auxiliary Power Supplies for the Light Rail Vehicles DMITRI VINNIKOV THESIS ON POWER ENGINEERING, ELECTRICAL ENGINEERING, MINING ENGINEERING D24
 Faculty of Power Engineering Department of Electrical Drives and Power Electronics
 TALLINN UNIVERSITY OF TECHNOLOGY
 Dissertation was accepted for the commencement of the degree of Doctor of Technical Science on October 17, 2005
Introduction
Electric traction is the only present-day solution for environmental problems in the city context. Electric traction is safe, economical, reliable and with a minimum environmental impact. The tram (or LRV, Light Rail Vehicle) is increasingly being seen as a cost-effective, environment-friendly and attractive solution to the urban transport crisis. New demands for energy efficient, reliable and safe rolling stock require purchasing of new vehicles, which is always a bulky financial burden on the rolling stock owner. In many cases, the replacement of entire rolling stock to obtain a new and more efficient technology is not economically feasible. Introduction of new energy saving technologies on old but not yet established own resource trams/LRVs in recent years has become a very attractive approach.
FULL THESIS
http://digi.lib.ttu.ee/archives/2006/2006-07/1153818082.PDF

VISITANDO A FEIRA EMBEDDED SYSTEM CONFERENCE BRAZIL SÃO PAULO-26-27 AGOSTO 2014

Power Quality Improvement of Single-Phase Grid-Connected Photovoltaic Inverter By Trung-Kien Vu

Power Quality Improvement of Single-Phase Grid-Connected Photovoltaic Inverter By Trung-Kien Vu

A Dissertation for the Degree of Doctor of Philosophy

Department of Information and Communications Engineering
Graduate School
Chungnam National University


ABSTRACT The economical and environmental impacts of fossil fuels have forced society to investigate sustainable solutions. The interest has focused on the renewable energy sources since the green and clean benefits. Consequently, investments in research and development in the field of power electronics have increased proportionally, especially in high voltage and high power grid-connected systems. The distributed power generation (DG) systems are becoming more common as the need for electric power increases because of taking advantage of using different energy sources such as wind and solar. A few examples are hybrid cars, solar houses or hospitals in remote areas where providing clean, efficient and reliable electric power is critical to the loads. In such systems, the power is distributed from the source side to the load side via power electronic converters in the system. At low and medium power applications, the task is often left to single-phase inverters where they are the only interface between sources connected to dc bus and loads connected to an ac bus. This dissertation investigates the power quality improvements to properly regulate the power flow between renewable source and the utility network. The control method for single-phase inverters used in low and medium power DG systems is based on (and also takes the advantage of) the well-known d-q transformation (which is mostly employed for three-phase converters’ analysis and control design).

THE NEXT GENERATION GRID-CONNECTED PV INVERTERS FOR HIGH PENETRATION APPLICATIONS By YAN ZHOU

THE NEXT GENERATION GRID-CONNECTED PV INVERTERS FOR HIGH
PENETRATION APPLICATIONS
By
YAN ZHOU
A Dissertation submitted to the
Department of Electrical and Computer Engineering
in partial fulfillment of the requirements for the degree of
Doctor of Philosophy Degree
THE FLORIDA STATE UNIVERSITY
ABSTRACT The increasing consumer demand and government incentives are driving the rapid growth of renewable energy generation. In particularly, the number of distributed photovoltaic (PV) system installations is increasing quickly. However, the high cost of the PV systems and the potential impacts on the safe operation of utility grid could become barriers to their future expansion. The transformerless cascaded multilevel inverter (CMI) is considered to be a promising topology alternative for low-cost and high-efficiency PV systems. This research work presents a single-phase transformerless PV system based on cascaded quasi-Z-source inverters (qZSI). In this system, each qZSI module is connected to a single PV panel and serves as a PV moduleintegrated converter (MIC).
FULL THESIS
http://diginole.lib.fsu.edu/cgi/viewcontent.cgi?article=7888&context=etd