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This paper considers estimating the state-of-charge (SOC) for lithium-ion batteries, that utilizes a fractional-order (FO) sliding-mode observer (SMO) is investigated. The capacity loss and deterioration resistance can be estimated by the FO SMO. Based on Mittag-Leffler stability theory, the FO SMO is designed and analyzed. The convergence property about FO SMO is shown by utilizing the Lyanunov-Krasovskii...
With the decreasing sizes of transistors and the increasing integrated circuit (IC) density, heat dissipation can be a limiting factor in developing emerging semiconductor technologies, such as silicon-on-insulator (SOI) based transistors and 3D-stacked ICs. To overcome this challenge, accurate thermal simulations are needed. The goal of this investigation is to explore the use of proper orthogonal...
This paper proposes the analysis of a small-signal model of two-output high-frequency series-resonant induction heater. There are 2 control loops: power control by duty-cycle and frequency control to maintain the zero-voltage switching condition for all operating period. This prototype controls power by using 3 branches of full bridge series-resonant inverter: one branch for common control and others...
NBTI (Negative Bias Temperature Instability) is a major concern in long-time circuit performance. In this paper, NBTI degradation models of basic logic gates have been developed based on the conventional reaction-diffusion (R-D) model which is used to predict the threshold voltage shift (ΔVTH) of p-type MOSFET. Besides load capacitance (CL), input slew rate (ti) and supply voltage (VDD), ΔVTH versus...
This paper presented the corresponding between the classical Poisson's yield equation prediction and wafer actual yield on the silicon wafer with 0.8 μm CMOS technology. The defect analysis with derivative method, current — voltage and capacitance-voltage of diode characteristic measurement, is used to define the defect in p-n junction on silicon wafer. The different sampling numbers of chips are...
In the present paper, computer empirical models of PV panels are developed in the Cadence PSpice environment. The model parameters are obtained from the datasheet characteristics. The model parameters are optimized using parametric analysis in order to increase the model accuracy.
Particle swarm optimization (PSO) has proven to be a particularly popular evolutionary algorithm for the tuning of PID controllers, due to its relative simplicity and suitability as a function approximator. This paper presents a new modeling technique, featuring co-simulation between Matlab and PSIM, a specialist control and power electronics simulation environment. The tuned PID is applied to a buck...
This paper present an analytical model of delay for subthreshold voltage to time converters (VTCs). The model characterizes an equation between the input voltage and output delay. Delay prediction model can be used to compute delay and understand characteristic of VTC in subthreshold region. Simulations are done in 0.18um CMOS technology and results ensure the accuracy of the model.
The penetration of renewable energy technologies into energy markets is on the increase due to significant drops in their capital cost, increase in their efficiency and improvement in storage system and power electronic interface. Most universities around the globe offer, nowadays, renewable energy courses within the electrical and mechanical engineering curricula to support the increasing demand...
The nanometric memristor has emerged as an important device that foresees novel features for analogue and digital systems. As an immediate consequence, there is a strong need for smart models of the memristor that not only handle the Physics of the device but that also result of application for electric circuit simulation. The ultimate goal is to allow the memristor to be incorporated to the design...
The heterogeneous integration between CMOS devices and different emerging nanotechnologies such as the single-electronics tries to take the best of each technology. On one hand, the advantages of MOSFET devices are high speed and high current and the relative maturity of fabrication technology. On other hand, single-electronic technologies have the potencial to create high-density devices and have...
Based on Extended Describing Functions technique, small-signal modeling technique is applied to Series-Series compensated Induction Power Transfer (IPT) system. The derived model includes both frequency control and phase shift control. The derived model is in good agreement with the simulation results obtained from Simplis software.
Three-phase ac systems can be transferred into dq axis, where stability analysis becomes much simpler. In order to apply the stability criterion in AC system, an equivalent DQ admittance model for the ATRU system has been developed in this paper, based on the ABC impedance model in paper [1]. Compared to the literature work, this model has two better features: (1) it is valid in a wide frequency range,...
This paper analyzes the stability issue of the Flyback converter which utilizes a second stage LC filtering circuit at its output side. The small signal models of the Flyback converter using second stage filter, in both DCM and CCM, are presented with experimental data collected to verify the theoretical analysis. Finally, guidelines for designing the second stage LC filter are derived to facilitate...
This paper introduces a new extended averaging method for switching power converters. By extending the conventional averaging techniques, this method is capable of modeling power converters with multiple switching frequencies. Using this method, a model for a cascaded dc-dc converter is derived. Comparison between the model and the non-averaged system is performed. Experimental verifications are provided...
Integration and application of Solar Panels as clean energy resources in electricity production and distribution is gaining wide spread implementation in market, to implement these resources successfully and to operate them in efficient way. It is so important to model solar cell and analyze its behavior and dynamics in proper method. In this paper, Photovoltaic module is analyzed, modeled and simulated...
Ultrasound systems are widely used. Modeling and simulation of ultrasonic transducers systems is a challenging task due to the presence of multi-physics effects such as electrical and mechanical effects and their interaction. Different approaches were proposed to predict the piezoelectric transducer behavior such as a numerical resolution of piezoelectric equations. Another approach is based on the...
In this paper, a novel device structure for the memristor with two active layers and it's nonlinear ionic drift model is presented. We developed the mathematical model using modified nonlinear Joglekar window functions and translated into a compact SPICE model for the proposed memristor. The SPICE simulation results show significant improvement in the memristor ROFF/RON ratio, switching speed, saturation...
This paper implements optimal control strategies in the scenario of a battery energy storage system connected to the electric grid together with a wind turbine. A simplified model for a battery is first developed, along with a state equation model of the system. Optimal control is used to minimize the difference between the actual battery power and the given reference power. The battery is connected...
This research is purposed for the developing battery charger using the internal parameters — internal voltage of batteries and phase-which the existing charger don't use. For the research, the volume of applied voltage and current to batteries has been adjusted using direct connected capacity, and output voltage and current has been sensed. The sensed data go through the DFT, and DFT shows direct...
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