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. Memory has a great impact to study the dynamics of any real epidemic process in a better way. An epidemic model including memory effect is governed by fractional differential equations. In the present paper we explore the dynamics of the zoonotic visceral leishmaniasis (ZVL) disease using fractional derivative in both the Caputo and Atangana-Baleanu sense. The proposed model in the Caputo sense...
The Fuel_LF‐RTO strategy is real‐time optimization (RTO) strategy proposed here to find the optimal values of fueling for the polymer electrolyte membrane fuel cell hybrid power sources under unknown load profile, which is the case of fuel cell vehicle. The proposed optimization strategy is based on global extremum seeking (GES) algorithm and load‐following (LF) control for air and fuel flows. The...
In high power and high dynamics applications (such UPS or Welding Machine) to reduce line current harmonics, power factor correction PFC regulators are essential. This paper presents an innovative control law for a single-phase PFC boost converter. This kind of system is a nonlinear behavior. Classically, to control the voltage and the current in the converter, a linearized technique is often used...
This paper presents an innovative control law for permanent magnet synchronous motor (PMSM) drive for high dynamics applications. This kind of system (three-phase inverter connected with a PMSM) exhibits nonlinear behavior. Classically, to control the speed and the current (torque), a linearized technique is often used to study the stability and to select the controller parameters at specific operating...
Recently, the model based control has been successful applied for motion control applications. It improves better performance than a classic linear control. However, a model base control needs to know some parameters for exact estimations, here a load torque and stator resistance. In this paper, it presents three-observers for a differential flatness model based control approach for a DC permanent...
This paper proposes a cascade voltage/current control method (vector control) for a three-phase inverter for grid connected applications. The study mainly focuses on the innovative control law based on the flatness properties for a three-phase inverter with output LC filter. Utilizing the flatness principle, we propose simple solutions to the control and stabilization problems. The effectiveness of...
This paper introduces a nonlinear control scheme based on the differential flatness approach for controlling the speed/torque of a permanent magnet synchronous motor (PMSM) drive. The differential flatness estimation is a model based approach. Then, two state-observers are proposed to estimate a load torque disturbance and a stator resistance (represent losses in an inverter and PMSM) by means of...
The design, implementation, and control of rotor topology for an interior permanent magnet synchronous motor (IPMSM) is presented in this paper. The method is an arrangement of buried magnets in a flux concentration structure, combined with Pulse Width Modulation (PWM), which act on the iron core of the rotor, known as the PWM-rotor. The unsatisfied harmonic contents of the flux density in the air-gap...
This study presents an energy management approach for a hybrid energy system comprised of a photovoltaic (PV) array and a polymer electrolyte membrane fuel cell (PEMFC). Two storage devices (a Li-ion battery module and a supercapacitor (SC) bank) are used in the proposed structure as a high-energy high-power density storage device. Multi-segment converters for the PV, FC, battery, and SC are proposed...
This paper proposes a modified 4-phase interleaved converter for the FC power source for mobile based station applications. The ripple and harmonic content of the FC current is one of the various phenomena influencing FC lifetime. The main objective of this research is to minimize inductor size, capacitor, current/voltage ripples, and harmonic content. The main contribution is to presents a control...
The authors present a new design of rotor shape of interior permanent magnet motor. Improvements of the flux concentration combined with the Pulse Width Modulation (PWM) method are applied in this article. The significantly selected harmonic contents of the air-gap flux density are reduced by this technique. Therefore, an obtained back Electromotive Forces (EMF) are of better quality. The essential...
This study presents energy management approaches for a fuel cell (FC) power plant for autonomous system applications. Two storage devices (supercapacitor (SC) and Li-ion battery) are used in the proposed structure. Linear proportional-integral (PI) and nonlinear flatness-based controllers for dc bus stabilization for power plants are compared. Experimental results with small-scale devices [namely,...
A proposed parallel power converter with interleaving algorithm is chosen to boost a low dc voltage of photovoltaic (PV) to a dc bus utility level and then follows by inverter. Converters are controlled by interleaved switching signals, which have the same switching frequency and the same phase shift. By virtue of paralleling the converters, the input current can be shared among the cells or phases,...
This paper proposes the operation of an energy storage devices consisting of a Li-Ion battery module and a supercapacitor (SC) bank for future transportation with a fuel cell (FC) as the main power source, so that FC vehicles (FCVs) with energy storage devices could result in reduced cost, improved fuel economy, lifetime, and performance. The study principally focuses on the original control law based...
This study presents innovative control algorithms for a hybrid energy system by a photovoltaic (PV) array and a polymer electrolyte membrane fuel cell (PEMFC). A single storage device, i.e., a Li-Ion battery module, is in the proposed structure. Linear proportional-integral (PI) and nonlinear flatness-based controllers for dc bus stabilization for power plants are compared. To verify the control algorithms,...
A solar cell/hydrogen energy power plant, fed by photovoltaic (PV) and fuel cell (FC) sources with a Li-ion battery (Bat) storage device and suitable for distributed generation applications, is proposed herein. The PV is used as the main source; the FC acts as a backup, feeding only the insufficiency power (steady-state) from the PV; and the battery functions as an auxiliary source and a short-term...
This paper presents a control algorithm for dc-bus stabilization in weak network that uses a Li-ion battery as the battery substation. The battery modules connected with 2-quadrant 4-phase parallel converter with interleaved technique. In this paper, a nonlinear control algorithm based on the flatness properties of the system is proposed. Using the flatness property, we propose simple solutions to...
This paper presents a control algorithm for dealing with the constraints of energy power source and a current-fed full-bridge converter. The advantages of this control scheme include transient and steady-state responses and robustness. The prototype of 26 V/100 V 250 W and its controller were implemented. A dSPACE DS1104 was used to implement the outer control loop by using flatness system's properties...
A renewable energy hybrid power plant, fed by photovoltaic (PV), wind turbine (WT), and fuel cell (FC) sources with a supercapacitor (SC) storage device and suitable for distributed cogeneration applications, is proposed herein. The PV, the WT, and the FC are used as the main source; and the SC functions as an auxiliary source and a short-term storage system for supplying the deficiency power (transient...
This paper presents a new control strategy for dc-link stabilization that use supercapacitors (SC) as the energy storage unit. A three-port isolated converter based on a dual active bridge topology is presented, and a reduced-order mathematical model of the system is described for power plant control. Using a nonlinear control approach based on the flatness property, we propose a simple solution to...
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