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This paper presents the design of a super-twisting with a high-gain observer-based state and sensor faults estimations for a continuous stirred tank reactor (CSTR). The proposed schemes transform the original system into two subsystems, the first subsystem includes the nominal plant where a high-gain observer is proposed for state estimation, whereas the second subsystem has only sensor faults where...
In this note, an adaptive fuzzy logic control (AFLC) strategy based on active sliding mode theory is considered to control a class of chaotic fractional-order systems. The main contribution in this work is the use of a saturation function to eliminate the chattering action in the control and surface signals. The nonlinear fractional order chaotic systems are identified using fuzzy logic sets. Based...
Transient stability analysis is an indispensible part of utility system planning. At present, it still relies on the classical numerical integration methods which are accurate but time consuming for large power systems. This paper proposes Gear's method and the block method to reduce the computational cost. These methods are used to simulate the IEEE 39 Bus system. The classical model representation...
In this work we propose an adaptive PID control law to deal with a class of single input single output (SISO) uncertain nonlinear systems. In fact, a fuzzy system is used for approximating the PID control gains. The fuzzy system parameters are adjusted online using a robust adaptation law based on the Gradient method and augmented by the so-called “e-modification” term, in order to minimize the error...
This paper presents the development of single machine infinite bus system (SMIB) model for transient stability studies with detailed synchronous machine model and a Power System Stabilizer (PSS) in Matlab/Simulink software. The proposed method of the SMIB simulator is computationally efficient and flexible for interfacing the synchronous machine with the external network and for extending to multimachine...
Voltage stability is an important factor, which needs to be taken into consideration in order to avoid voltage collapse. There are different methods used to study the voltage collapse phenomenon. In this paper, V-Q Sensitivity and Modal analyses methods are implemented on IEEE 14 bus system. Modal analysis method makes use the Jacobian matrix to determine the eigenvalues necessary to evaluate the...
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