This document discusses the design of a STATCOM controller to regulate the voltage of an induction generator driven by a wind turbine. It proposes a mode decoupling STATCOM controller that uses eigenstructure assignment to decouple the active and reactive current control loops. Simulation results show the proposed controller more effectively regulates the generator terminal voltage during disturbances compared to controllers that do not use mode decoupling or neglect certain control gains. The controller is also experimentally validated on a laboratory setup consisting of an induction generator, STATCOM, and other system components.