In this paper a comprehensive approach is presented to improve power swings damping based on direct Lyapunov method. The approach combines superconducting magnetic energy storage (SMES) system with static synchronous compensator (STATCOM). Considering the energy absorption/injection ability of SMES, in transient states the combination exchanges both active and reactive powers with power system....

A major aspect of human reasoning involves the use of approximations. Particularly in situations where the decision-making process is under stringent time constraints, decisions are based largely on approximate, qualitative assessments of the situations. Our work is concerned with the application of approximate reasoning to real-time control. Because of the stringent processing speed requiremen...

Testing and assessing of vehicle control systems require realistic environment, which requires enormous workload; to some extend it is impractical to set up the realistic environment. A comprehensive traffic environment simulation model has been designed and implemented for supporting vehicle control system development. The model consists of tow sub models: the motorway traffic flow model and d...

to study the effect of three soil fertilizing systems (chemical, organic, and integrated) on forage yield and quality of globe artichoke (cynara scolymus) an experiment was conducted using a randomized complete block design (rcbd) of four replications at the research farm of college of agriculture, university of tehran, karaj, iran in 2006. the treatments included 5 levels of chemical fertilize...

this paper introduces an indirect adaptive fuzzy sliding mode controller as a power system stabilizer for damping local and inter-area modes of oscillations of multi-machine power systems. this controller is designed based on the combination of sliding mode controller and the fuzzy logic systems. the fuzzy systems are used to approximate the unknown functions of power system model. generator sp...