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In this paper, we propose a new algorithm based on the combination of the well-known Kalman Filter (KF) and a Temporal Differencing (TD) method named the Q-learning technique. The purpose is to solve a single maneuvering target tracking problem. The algorithm consists of adapting the noise process of the Kalman filter when the target changes its mode using Q-learning based decision. After a comparison...
Renewable Energies (RE) are considered as an important alternative sources of energy for the generation of electricity such as hydrogen and photovoltaic energies. To ensure an efficient photovoltaic energy conversion several Maximum Power Point Tracking (MPPT) algorithms have been developed to incite the PV field to deliver maximum power. This paper presents a comprehensive comparative study of two...
Multilayer polyethylene is a material that is generally employed as insulation for the HVDC isolations. In this paper, the influence of the dielectric thickness on space charge dynamic has been studied. For example, low-density polyethylene (LDPE) and Fluorinated Ethylene Propylene (FEP) sandwiched between two electrodes were subjected to high voltage application for the extended duration of time...
This paper deals with the development of intelligent power control and energy management of a photovoltaic-hydrogen hybrid system used in standalone application. Electrical power from solar conversion meets the user loads and the surplus used for water electrolysis to produce hydrogen. The system controlled by using an intelligent power conditioning units based on echo state network to ensure good...
The paper presents a new MPPT method based on Golden-Section Optimization (GSO) technique for photovoltaic systems. The GSO-based MPPT converges to the MPP by interval shrinking. Initially, two points have been selected from the search space that is known, evaluated then a new point is accordingly generated. At given iteration the algorithm has a new narrowed interval bounded by the new point and...
This paper is concerned with the design of a robust position Backstepping tracking controller for a permanent magnet synchronous motor (PMSM). A Backstepping control law is designed from the input-output linearization of the PMSM model, written in d-q coordinates. This controller is adapted via the estimation of the unknown load torque and friction effects. A linear extended state observer is devised...
In this paper, two approaches to speed estimation, presented in the literature, for a sensorless control of double star induction machine. We will discuss briefly the advantages, disadvantages, and limits of use of these techniques. We will then apply these two sensorless control techniques to the double star induction machine. The simulation results obtained showed that the speed sensorless vector...
In this paper, we propose a modified architecture of a Pi-Sigma Neural Network (PSNN) based on two modifications: extension of the activation function and adding delays to neurons in the hidden layer. These new networks are called respectively Activation Function Extended Pi-Sigma (AFEPS) and Delayed Pi-Sigma (DPS) are obtained first by adding an activation function to all hidden neurons and secondly...
This paper gives details of our electrical engineering program efforts to introduce software/hardware design concepts and tools in senior-level and senior-design applications. In this paper we present a simple architecture for the very high development language (VHDL) implementation of a variant of RLS algorithm where adaptive filter coefficients and filtering error are both estimated block wise....
In this work, we are interested by emulating metamaterial microwave waveguides which behave like conventional metallic ones. We use metamaterial layers based on two types of unit cells. The first one is a connected cross type unit cell which leads to a metamaterial with a near zero refraction index (n1 ≈ 0). The second one is a disconnected cross type unit cell which leads to a metamaterial with a...
In this work a new improved version of Teatching Learnning Based Optimization algorithm, TLBO, is proposed. The new strategy is obtained by tne inclusion of the Bat Algorithm, BA, random local search part in the optimization process with TLBO algorithm. The developped hybrid algorihm is applied jointly with 2D non-linear finite elment method to solv the Team workshop problem 25.
In this paper, an integral sliding mode control is proposed to control a four-leg Distributed Static Compensator (DSTATCOM) system coupled to a superconducting magnetic energy storage (SMES) unit. The proposed SMES based DSTATCOM (SDTATCOM-SMES) is connected to a three-phase four-wire distribution system feeding a set of balanced and unbalanced loads. The control system is designed to compensate the...
This research work presents the distribution of the electric field in point-barrier-plane air gaps taking into account the presence of a space charge under electric stress. A new approach of numerical simulation has been applied to study the barrier effect on the electric field distribution using COMSOL Multiphysics®. The introduction of an insulating barrier leads to a reduction of the electric field...
The High electric field electron transport characteristics in a hexagonal SiC polytype are exposed in this paper. Simulations of the electrons behavior are based on a non-parabolic ensemble Monte Carlo model (EMC). This EMC is implemented to solve the semiclassical Boltzmann equation under high electric field conditions. Also, for more accurate results some effects such as temperature, phonons and...
This paper presents the experimental real time implementation of a grid-connection field-oriented control (FOC) for wind turbine based on a doubly fed induction generator (DFIG). A control law is synthesized using a hybrid FOC-Hysteresis Current Controller (HCC) in Rotor side converter (RSC) and the stator is connected to grid via robust PLL (phase locked loop). The regulation is achieved below the...
This paper presents an improved stator active and reactive power control is proposed in wind system (WS) to control doubly fed induction generator (DFIG) in Hyposynchronous mode using maximum power point tracking (MPPT) strategy. A new class of fuzzy logic called an adaptive type-2 fuzzy logic control (T2-FLC) is proposed for wind generation application to control Ird and Irq instead the proportional...
Solar cell/module modeling involves the formulation of the non-linear current versus voltage (I-V) curve. Determination of parameters plays an important role in solar cell/module modeling. This paper presents an application of the improved PSO search method and Particle Swarm Optimization technique for identifying the unknown parameters of solar cell and photovoltaic module models, namely, the series...
This paper presents a real time simulation of doubly-fed induction generator (DFIG) control for wind turbine generation system (WTGS). A decoupled power control based algorithm is used to drive the whole system. Where two PI controllers are designed in order handle the active and reactive powers, while a third one is employed to keep a same voltage in the DC-Link. In order to verify the whole algorithm,...
In this paper an approach is developed for the online diagnosis of timed discrete events systems, the formalism used is the labeled timed Petri nets. We have introduced a new concept is: enriched set of possible states. In addition to online diagnosis our approach allows us to avoid the combinatorial explosion of states.
This paper describes a PV system supplying a large scale interconnected grid. A PV array is connected to AC grid via a DC-DC boost converter and a three-phase three-level Voltage Source Converter (VSC). Maximum Power Point Tracking (MPPT) is implemented in the boost converter by means of a Simulink model using sliding mode controller by switching the duty cycle of the boost converter. A three phase...
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