Output Filter Design of Grid-Connected Inverter for High Power Offshore Wind Power System Kwangwoon graduate Department of Electrical Engineering Kim Dong

Abstract
Output Filter Design of Grid-Connected Inverter for High Power Offshore Wind Power System The output filter design for high power grid-connected inverter of offshore wind-turbine has many limitations such as low switching frequency, allowable DC-voltage, and the component volume and weight. In addition, the injected harmonic current into the grid is constrained by various grid connection requirements. This paper compared and weighed with several harmonic regulations and suggested the optimal design procedure of the output filter compliance with the grid code using spectrum analysis of inverter output voltage that contains harmonics. In this paper, the output filter of grid connected inverter for 7MVA offshore wind power system is designed to meet the BDEW harmonic currents limits and the IEEE 519-1992 requirements. The performance of the designed output filter is validated by extensive simulations using Matlab/Simulink.

Design of CLC Filter for Flyback Inverter of Grid-Connected Photovoltaic Systems Yesl Shin Electrical and Computer Engineering Graduate School Ajou University

Abstract
Yesl Shin
Electrical and Computer Engineering Graduate School Ajou University

This paper proposes a design of CLC filter which is the output filter of a flyback type current source inverter (CSI) for a photovoltaic system. This applied inverting system is micro-inverter, so the capacity and size of the entire system is critical factor for system evaluation. The proposed CLC filter consists of a conventional CL filter and an additional capacitor. The CLC filter guarantees the same or better performance about the reduction of current ripple than that of the CL filter. In such a case, the CLC filter is composed of the capacitor and the inductor with smaller capacity than the components of the CL filter. It can help the applied micro-inverter to be smaller size and cost less. For the advanced stability of output CL filters, the effect of passive damping methods for the CL filter is analyzed according to the resistive damping’s location. Among these damping methods, the one which has low power consumption is applied to the CLC filter and the effect of this method is also analyzed. A simulation and experiment are conducted to verify the performance of the proposed CLC filter and the validity of passive damping method.

SOLAR PHOTOVOLTAIC ENERGY GENERATION AND CONVERSION —FROM DEVICES TO GRID INTEGRATION by HUIYING ZHENG Department of Electrical & Computer Engineering in the Graduate School of The University of Alabama

SOLAR PHOTOVOLTAIC ENERGY GENERATION AND CONVERSION
FROM DEVICES TO GRID INTEGRATION
by
HUIYING ZHENG
A DISSERTATION
Submitted in partial fulfillment of the requirements
for the degree of Doctor of Philosophy
in the Department of Electrical & Computer Engineering
in the Graduate School of
The University of Alabama

LINK FULL THESIS

http://www.opal-rt.com/sites/default/files/technical_papers/SOLAR%20PHOTOVOLTAIC%20ENERGY%20GENERATION%20AND%20CONVERSION.pdf

Control Techniques for the Maximization of Power Converter Robustness and Efficiency in a Parallel Photovoltaic Architecture by David Charles Jones University of Colorado

Control Techniques for the Maximization of
Power Converter Robustness and Efficiency in
a Parallel Photovoltaic Architecture

by
David Charles Jones
B.S., Bradley University, 1985
M.S., University of Illinois, 1986
A thesis submitted to the
 Faculty of the Graduate School of the
University of Colorado in partial fulfillment
of the requirement for the degree of
Doctor of Philosophy
Department of Electrical Engineering-2013

FULL THESIS
http://media.proquest.com/media/pq/classic/doc/3003257911/fmt/ai/rep/NPDF?_s=sN5itq%2B4XsrpsD8SCePCM1vTBSw%3D

Harmonics in Large Offshore Wind Farms by Łukasz Hubert Kocewiak Faculty of Engineering, Science and Medicine at Aalborg University

ABSTRACT
The number of wind turbines with full converters in the MW range used in large offshore wind farms is rapidly increasing. They are connected through a widespread MV cable network with practicably no consumption and connected to the transmission system by long HV cables. This represents new challenges to the industry in relation to understanding the nature, propagation and effects of harmonics. Recently, the wind power sector is rapidly developing. This creates new challenges to the industry, and therefore more and more research projects, including harmonic analyses especially focused on wind power applications, are conducted and that is why the project was initiated and successfully developed.
LINK FULL THESIS
http://vbn.aau.dk/files/62660098/lukasz_kocewiak.pdf