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The present paper focuses on wireless energy transfer mechanisms applied to urban electric vehicles. It describes the using conditions of a particular transformer without ferromagnetic core, supplied by a resonant inverter and loaded by mobile sources (catenaries with magnetic induction to power electric vehicles). The system consists of unconventional transformers with large air-gaps and a generator...
in this paper, a simple and low cost single phase seven-level inverter for PV solar pumping system is proposed. The system consists of a dc-dc multilevel boost converter which is utilized for generating three voltages at its output terminal. In addition a dc-ac multilevel converter apt for the engendered dc bus voltages generates seven levels at its output terminal. The proposed system has the advantages...
This paper presents a comparative analysis between conventional direct torque control (C_DTC), Modified direct torque control (M_DTC) and twelve sectors direct torque control (12_DTC).Those different strategies are compared by simulation in term of torque, flux and stator current performances. Finally, a summary of the comparative analysis is presented.
High performance computing (HPC) on the cloud is an emerging approach that can potentially provide a significantly cheaper alternative to supercomputers. However, clouds are largely oriented towards multiprogramming workloads with no significant intercommunications. The placement of tightly coupled HPC virtual machines is thus not guaranteed to be physically affine, resulting in unpredictable communication...
the aim of this paper is to presents a contribution for detailed comparison between fuzzy direct torque control (FDTC) strategy of Induction Machine (IM) using FLC and fuzzy logic switchers (FLS), and the conventional DTC using the two PI and IP controller. The performances of those two control schemes are evaluated and compared by simulation in terms of speed, flux, torque, current ripples and transient...
An improved and modified Direct Torque Control (DTC) algorithms for permanent magnet synchronous motor (PMSM) drive is investigated in this paper, which features low torque and flux ripple and almost fixed switching frequency. Indeed, a first algorithm uses DTC with Space Vector Modulation (SVM), which is called DTC-SVM, improves greatly the torque and flux ripples compared to the basic DTC reported...
Direct Torque Control (DTC) has becoming the industrial standard for Induction Machine (IM) torque control by means of very simple control schemes. This paper presents a contribution for detailed comparison of Direct Torque Control strategies (Classical DTC, SVM-DTC and Fuzzy DTC) for Induction Machine. The performances of those various methodologies are evaluated and compared by simulation in terms...
This paper presents the simulation results in Matlab/Simulink of three versions of permanent magnet synchronous machine (PMSM) vector control. In order to choose the most suitable pulse width modulation (PWM) strategy for controlling the voltage inverter, in term of electromagnetic torque ripple minimization, three modulation techniques associated with the vector control are investigated i.e. sinusoidal...
An effort is made to acquire a better understanding of the electrical properties of polymer/liquid interfaces as encountered in various electrotechnical applications such as power capacitors, solid spacers, etc. The diffuse part of the electric double layer built up at the solid/liquid interfaces is shown to act as a reservoir of carriers, and when the interface is perpendicular to the field, electrohydrodynamic...
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