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High Performance Control of Grid Inverters for Renewable Energy Applications


F. Berkel

Semester/Bachelor Thesis, SS 11

The semester thesis deals with the control of a two level three phase inverter that is connected with the grid through an LCL lter. A Model Predictive Control method is applied to control the currents that are injected into the grid. Furthermore a state observer and a grid voltage estimator are used to reduce the number of required sensors. In the control scheme, special emphasis is directed to the grid synchronization method. To synchronize the converter with the grid, di erent grid synchronization algorithms based on Kalman filtering and least square estimation are introduced and tested. Finally the inverter system is simulated with MATLAB. Thereby the control functions are written in C as MATLAB MEX functions. The semester thesis has been carried out at the Automatic Control Laboratory (Institut für Automatik, IfA) at Swiss Federal Institute of Technology (ETH) Zürich, Switzerland, and is submitted at the Institute of Control Systems at University of Kaiserslautern, Germany.


Type of Publication:

(13)Semester/Bachelor Thesis

S. Mariéthoz

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% Autogenerated BibTeX entry
@PhdThesis { Xxx:2011:IFA_3872
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