A simple passive voltage-balancing scheme for three-phase induction generators interfaced with single-phase grids in micro hydroelectric systems

This paper proposes a simple, passive, voltage-balancing scheme for induction generators directly interfaced with single-phase utility grids. The proposed scheme employs two capacitors for balancing the stator voltage and is insensitive to the machine's slip. The paper presents the mathematical analysis and an algorithm for the calculation of the two capacitances. Further, the effectiveness of the proposed scheme is demonstrated through the simulation studies in the PSCAD/EMTDC software environment.