Adaptive Fuzzy Synergetic PSS Design to Damp Power System Oscillations

Document Type : Research paper


Department of Electrical Engineering, University of Zanjan, Zanjan, Iran


This paper presents a novel indirect adaptive Power System Stabilizer (PSS) via a developed synergetic control methodology and fuzzy systems. Fuzzy system is utilized in an adaptive scheme to estimate the system using a nonlinear model. The synergetic control guarantees robustness of the controller and makes the controller easy to implement because of using a chatter free continuous control law. Additionally, the parameters of the controller are optimized by Imperialist Competitive Algorithm (ICA). The effectiveness of the proposed scheme is confirmed on a single machine power system while the stability is guaranteed through Lyapunov synthesis.


  • Receive Date: 18 February 2006
  • Revise Date: 24 February 2006
  • Accept Date: 24 February 2006
  • First Publish Date: 01 June 2007