Improving the quality of energy supplied by a double-fed induction generator fed by multilevel inverters

In this paper, we are particularly interested in improving the quality of energy supplied to the grid by a double-fed induction generator (DFIG) in wind chain fed by multi level inverters despite the variation of the wind. We will consider the operation of the machine supplied by a two, three, five and seven level inverters under constraint conditions imposed on to the powers references and to the variation of the wind. The performance of these structures are analyzed and compared. The tests are carried out by simulation using Matlab Simulink which are presented and analyzed.