Investigation of a three-phase self-excited induction generator feeding single-phase loads

In this paper, a three phase delta connected self-excited induction generator (SEIG) excited by two capacitors and feeding a single phase load is investigated in both transient and steady state cases. Using symmetrical components analysis, two simple formulas are derived to calculate the required values of the two capacitors that result in balanced stator phase currents under rated conditions, which eliminates the torque pulsation due to single phase loading. The dynamic model of the proposed connection in the stationary dq reference frame is also presented in details. The system model is built and simulated using MATLAB/SIMULINK. The simulation results are presented and experimentally verified under different conditions.