New insights for capacitance requirements for isolated induction generators

This paper presents a simple and accurate approach to compute the capacitance requirements for the self-excitation process in three-phase isolated induction generators. The method proposed in this paper is based on the nodal analysis of the generalized equivalent circuit commonly used in the analysis of the induction generators. The proposed method involves simple algebraic equations and only one equation is solved iteratively to determine the capacitance requirements for the self-excitation process in induction generators. Simple computer algorithms are developed to predict the minimum value of capacitance for all loading conditions. The computer simulations obtained using the proposed method are compared with those obtained by solving the sixth order polynomial to confirm the validity, accuracy and simplicity of the proposed method