“…The rapid development of modern control theory has provided many advanced control methods for chaos control, such as finite time control (Wei et al, 2014a), feedback control (Chen and Han, 2003), fuzzy control (Vembarasan and Balasubramaniam, 2013), backstepping control (Zhang and Mu, 2014), adaptive control (Wei et al, 2014b), sliding mode control (Aghababa and Feizi, 2012), projective synchronization (Wang and He, 2008), passive control (Wei and Luo, 2007a), neural network control (Kao et al, 2011), optimal control (Chavarette et al, 2009), etc. Some of them have been applied to design a power system controller, such as Thyristor Controlled Series Compensation (TCSC) (Jiang et al, 2012), Static Var Compensator (SVC) (Ginarsa et al, 2013), Power System Stabilizer (PSS) (Farhang and Mazlumi, 2013) and Unified Power Flow Controller (UPFC) (Jiang et al, 2006). In our previous works, a fuzzy fast terminal sliding mode controller using an equivalent control scheme (Ni et al, 2013) and a variable speed synergetic control method (Ni et al, 2014) were proposed to eliminate chaotic oscillation in a power system.…”