ANALYSIS OF SELF-EXCITED INDUCTION GENERATOR FEEDING INDUCTION-MOTOR

The paper is motivated to assess the suitability of a self excited ind uction generator (SEIG) to supply dynamic loads like induction motors. An algorithm is proposed to predict the steady state performance of a n SEIG feeding an induction motor (IM). The computed and experimental results are presented for different operating conditions of an SEIG-IM system. A good agreement reached between the predicted and test resul ts validate the effectiveness of the proposed algorithm. Experimentall y recorded transients of an SEIG during a series of switching operatio ns are presented to demonstrate the ability of an SEIG to sustain the starting of an IM. By analyzing the performance of a typical 7.5 kW, 3 -phase SEIG feeding induction-motors of different ratings, useful gui delines are proposed for the design of an SEIG-IM system in autonomous applications like agricultural pumpsets.