Voltage Stability of Induction Generator with Resistive Load

Bifurcation theory is utilized to analyze the dynamic voltage stability of an induction generator, which is used widely in isolated power system. Based on the transient model of induction generator under the stationary reference frame, the state equations are derived. For various resistive loads, the eigenvalues of state equations are calculated to obtain the bifurcation point related to the critical load resistance, which is the critical stability point of the power system. With the bifurcation point determined, the voltage dynamic performance can be analyzed in stable domain. Experimental results for dynamic behavior of the generator terminal voltage validate the theoretical results analyzed by the proposed scheme.