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This work presents a Battery Energy Storage System (BESS) incorporated to a hybrid generation system — grid connected (Solar Photovoltaic and Eolic) applied in a specific facility located in Quito — Ecuador. For controlling the state of charge and discharge of the battery bank, a supervisory controller based on peak shifting principle is used. A bidirectional converter controls the power flux from...
The article describes the synthesis of a control system of a hermetic electromechanical converter with respect to the complex security systems. We take into account the design features of the controlled object based on a fuzzy logic controller. We carried out the comparison of the transients which are character for the classical and fuzzy controllers with different algorithms.
In this paper, multirotor unmanned aerial vehicle (UAV) stabilization system is developed. The UAV dynamic model of pitch angle is considered. The model is developed on propulsion system identification results and takes into account noizy signal from integrated in the crystal gyroscope and acelerometer (GY-521). The model represents the dynamics of 450 class quadcopter. In the paper, stabilization...
This paper presents a new control strategy of autonomous mobile robot in running environment. The robot is considered as an individual agent aimed at executes different tasks in term of motion under constraints applied on robot structure. The flat model of Pioneer 3dx robot is developed in order to prove that the system is flat and has various helpful properties which can be exploited to build the...
This paper presents a design and simulation of UPQC system for limitations of non linear load factors. The fuzzy logic controller is designed for tuning the PI controller parameters for achieving the optimal voltage is the solar power connected in the UPQC system. Solar power used to improve the power for load side power system designed in network. The MATLAB simulation software is used for simulation...
This paper deals with control of a DC motor using conventional and unconventional techniques, namely fuzzy logic controller and PID controller. After studying the performances of the PID controller, the idea is to determine a partial fuzzy controller. For the control of the position of the DC motor, an hybrid controller combining classic and unconventional approaches is proposed and tested with success.
This paper presents a solar photovoltaic grid interconnected system based on a PI-Fuzzy logic controller. The inverter described in this paper is a single stage converter powered by a buck or boost converter for efficiently transforming the input dc source into grid side ac. to extract maximum amount of power from the dc source a MPPT and a charge controller is provided with P & O algorithm. After...
Load Frequency Controllers (LFC) has long been handled by PID techniques. However, nonlinear disturbance in power system caused PID controllers exhibiting a mediocre performance. As an alternative, Fuzzy Mamdani and Takagi Sugeno Kang Fuzzy (TSKF) controllers were predominantly employed. However, the computational intractability due to torrential fuzzy rules limits further use of these techniques...
The lack of spinning reserves makes MGs unable to rapidly follow load changes resulting in unbalancing between generation and consumption which in turn causes voltage and frequency deviation from permitted ranges and even to instability. The current paper addresses this stability problem by presenting a novel control system for power converter-based low voltage MGs stabilization. The converter mode...
Load Frequency Control (LFC) is employed in a system to maintain the scheduled system frequency and tie line power of an interconnected area within the prescribed limits. In this paper load frequency and tie line power of three area interconnected power system is controlled first by conventional PID controller then to quench the variation occurred in system frequency and tie line power the Fuzzy load...
In recent years there has been an increasing demand for closely regulated dc power supply. Most of the power electronic converters used in these power supplies use bridge rectifiers which are nonlinear in nature. The nonlinear loads results in low power factor operation of system along with higher harmonic distortions. For reducing the harmonic distortion and better power factor operation of these...
In the control of the PEM (Proton Exchange Membrane) fuel cell, the existence of both deliberative and reactive processes that facilitate the tasks of control resulting from a wide range of operating scenarios and range of conditions it is required. The latter is essential to adjust its parameters to the multiplicity of circumstances that may occur in the operation of the PEM stack. In this context,...
The hybrid modelling technique of complex systems is a multimodel approach [1,3,8]. A hybrid model is defined as a complex model composed of several interconnected (sub)models of different kinds, i.e. a continuous simulation model and/or a discrete-time simulation model, a discrete event simulation model, a heuristic knowledge-based model and/or a fuzzy knowledge-based model. Such a model is useful...
In process control, precise level control of liquid in reaction vessels and storage tanks is essential. This work attempts the designing, testing, developing and controlling of a coupled tank model using an online self-tuning model free fuzzy controller. This controller is able to intelligently learn, adapt and tune it-self such that it can track the desired set point with minimal error by adapting...
This paper focuses on the power quality improvement at input and output stages of three phase diode rectifier. The input current harmonics distortion (THD), power factor at input and output side and voltage regulation of the three phase diode rectifier is investigated for power quality improvement. In this method, bidirectional switches are connected across the front end rectifier. The circuit with...
This paper deals with the PID controller proportional, integral and derivative parameters characterizeation. After performances comparison between classical and fuzzy PID, the idea is to determine a partial fuzzy PID controller. When only the proportional parameter is fuzzified, results show that the approach is efficient and can be sufficient to impose robustness for the closed loop system. The approach...
This paper presents a comparison between proportional integral control approaches for variable speed wind turbines. Integer and fractional-order controllers are designed using linearized wind turbine model whilst fuzzy controller also takes into account system nonlinearities. These controllers operate in the full load region and the main objective is to extract maximum power from the wind turbine...
With the development of industry the bridge crane develops into intelligence, the main case of its control system is that the load reach the designated position rapidly and steady so it can improve the work efficiency, and decrease the hidden dangers during its operation. To solve this problem and due to nonlinear and uncertainty of the crane model, in the paper shows a detailed analysis of the mathematical...
This paper investigates the fuzzy control method for the linear switched reluctance motor (LSRM) drive system. Modeling of the LSRM is constructed based on the finite element method (FEM) environment Maxwell and the control system is analyzed by the co-simulation environment with Simplorer. Both the performance of the fuzzy proportional integral differential (PID) controller and the traditional PID...
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