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Thermoelectric generators (TEGs) are used for the direct conversion of heat energy into electricity. Given that there is an extreme concentration of heat present on house roofs, the application of TEGs on these locations is feasible. This study involves the modeling of thermoelectric generators on house roofs through the use of simulations and an actual prototype. Simulations were done using the matrix...
In this paper, a MATLAB-SIMULINK-based model for the Well Station from the Geothermal Plant at the University of Oradea is developed. The Well Station component is in charge for producing (extracting) geothermal water that should be used for heating purposes in the university campus.
This paper presents a new way of modeling the integrators non-idealities for high-level sigma-delta modulator models. In this way, designers can correlate directly the integrator specifications like finite DC gain, Gain-Bandwidth product and Slew Rate with modulator performances (SNR, SNDR). Taking into account capacitive effects, a high degree of accuracy is obtained which is verified by transistor...
A future soldier carries a large gear weight in the battle because of increasing in the number of electronic devices such as communication equipment, sensors, or battlefield situational displays. These devices are necessary to save his life and ensure the victory in the combat. So, the wearable energy harvesting technology is the optimal solution to provide the energy to the soldier's electronic devices...
In this paper, a new capacitive pressure sensor (CPS) is investigated and modeled by means of neural approach. The sensing principle in our pressure sensor is based on the determination of the change in the capacity induced by the applied pressure. A ring oscillator is used to convert the capacity variation of the pressure sensor to an output frequency. A multilayer perceptron neural network is used...
The verification and validation of Digital Controller performance for a developmental aero engine is achieved through a series of tests, analysis and demonstrations at subsystem level, control system level and finally at aero engine integration level including the ground runs, flight trails. The paper deals with the development of a real-time Controller-In-The-Loop Simulation (CILS) platform to verify...
Quad copters are VTOL aerial robot systems and has complex dynamics in spite of its simple design. In the present work, a quadcopter of plus configuration is assembled and its flight characteristics are experimentally studied. To stabilize the system during its flight a KK multicopter platform is used. Flight stabilization is done and data of motor input voltage is acquired using a arducopter flight...
This paper presents the study of the seawater desalination process, by humidification-dehumidification, via an agricultural greenhouse with solar collectors.
Power transformer noise control is inevitable requirement of time in order to protect people's health and the environment. As the transformer noise is mainly concentrated in frequency below 1500 Hz so a more precise noise canceller is needed. Unlike other noise remotion scheme that fails below 500 Hz, adaptive filters utilization in ANC model accomplishment is most efficient. The following research...
Pulsed power thyristors have been widely used in pulsed power systems due to their controllability, large through-flow capacity and high repetition frequency. To study the device's electrical characteristics and the circuit transient process, based on research of reverse recovery process of pulse thyristor, a macro model of pulsed power thyristor applying to MATLAB/Simulink software platform was established...
The present paper details the analysis of a custom designed synchronous reluctance machine used for light electric vehicles. Firstly, the paper details the design of the machine using dedicated software, followed by an iterative optimization process using a coupling of FEM software with Matlab code. In order to analyze the performance of the machine, dedicated control strategies need to be implemented...
In system-level design, descriptive system models seem to be insufficient in order to perform a system verification which fulfils various stakeholders0 requirements. This fact is accentuated by the increasing complexity of system engineering projects and, as a consequence, the difficulties to deal with both their coordination and trace ability. Even if SysML (System Modeling Language) is considered...
There are many industrial applications where precise delivery of fluid required such as ratio blending, delivery system, etc. One of such application is petroleum product delivery system. As the price of these petroleum products is increasing day by day, it is important to deliver the exact demanded quantity of product to the customer. For such delivery systems the digital control valve is used. This...
This paper proposes an improved indirect current control for utility interactive inverter system where an additional inner current loop is introduced without adding any additional sensor. By introducing the additional loop, cross-coupling terms in LCL filter plant is fully cancelled and the voltage regulation performance is improved. Additionally, the state-space model of the proposed controller is...
The study of electrical conditions is reduced to determining the current value flowing through the human body in a variety of circumstances, in which it may be in the operation of electrical installations. Network voltage up to 1000 V with neutral grounding mode and exposed conductive parts (neutralling) are widespread in Russia and Central Asia. Electrical safety in such networks at indirect contact...
The objective of this article is to compare two topologies of converters Boost DC-DC, classical and interlaced, in terms of the values of the amplitudes of currents their output voltage and undulations, size of the components of the converters and delivered power. Our work presents a technical approach for the improvement and the optimization of the adaptation's performances of power of a photovoltaic...
The solid oxide fuel cell (SOFC) is a new energy power system. For the planar solid oxide fuel cells, the temperature distribution in a single cell is essential to the normal operation of a stack as well as the entire system. In order to estimate the temperature distribution in the cross-flow planar SOFC, this paper established a SOFC temperature field model in the matlab/simulink platform according...
Even if it is considered as an effective language for system modeling because of the descriptive aspect of its diagrams, SysML (System Modeling Language) is insufficient for verification of their behavior. This lack is accentuated by the increasing complexity of recent systems. In order to conduct behavior verifications, designers use simulation tools to realize experiments on the studied system....
Modeling complex mechatronic systems containing parts such as mechanics, electronics and software is a major challenge for the engineering of automation production systems. As a result, many modeling languages as well as tools (e.g. petri nets or MATLAB/Simulink) and verification approaches (e.g. testing, simulation or formal verification) that focus on special challenges to model the mechatronic...
It is often difficult to model the effects of partial shading conditions on PV array performance, as shade losses are nonlinear and depend heavily on a system's particular configuration. This work describes and implements a simple method for modeling shade loss: a database of shade impact results (loss percentages), generated using a validated, detailed simulation tool and encompassing a wide variety...
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