In this paper an efficient procedure for determination of small-signal and noise behavior of microwave transistors for various bias conditions is proposed. An empirical transistor noise model based on an equivalent circuit (improvement of Pospieszalski’s noise model) is considered. Since it is necessary to extract values of the model equivalent circuit for each bias point (which requires the me...

Lithium-ion batteries are widely used as rechargeable energy and power storage system in smart devices electric vehicles because of their high specific energy, densities, etc. The state charge (SOC) serves a vital feature that is monitored by the battery management to optimize performance, safety, lifespan lithium-ion batteries. In this paper, strong tracking adaptive fading-extended Kalman fil...

induction motor especially the squirrel cage type of this motor plays important role in industry. according to the application type, this motor place against various stresses that are caused failure in the motor. the most common failure is related to the stator winding. among these failures are turn-to-turn, coil-to-coil and phase to phase faults. flow the high current do to the induction resul...

The validity of the equivalent circuit model (ECM), which is crucial for development lithium-ion batteries (LIBs) and state evaluation, primarily dependent on precision findings parameter identification. In this study, commonly used first-order RC (1-RC) second-order (2-RC) models were selected A time series voltage with different sample intervals function fitting based least square method, ext...

Hybrid perovskite solar cell technology has a distinct advantage over the conventional technologies due to its high predicted efficiency and low manufacturing cost. However, commercialization is hindered by unpredictability existing in J-V characteristics leading ambiguous estimation. Modeling hysteresis means of curtailing this ambiguity. It established literature that models can be derived fr...

The modelling of the supercapacitor (SC) plays an important role for industrial application with many model representations such as electrical, chemical, and electrochemical models. Among one those models are equivalent circuit which has been used to describe real-time (charging/discharging) operation characteristics SC. Apart its mathematical complexity, time-consuming experimentally is also a...

In this paper, an analytical model based on the Magnetic Equivalent Circuit (MEC) method is developed for a planar wound mover two-degree of freedom (2-DOF) resolver. Planar resolvers enable mass, volume, and complexity reductions position control 2-DOF linear actuators. However, similar to any other electromagnetic sensors, performance negatively affected by limited dimensions mover’s ferromag...

The equivalent circuit method (ECM) was applied in the analysis of the membrane potential distribution in spherical membranes suspended in electrolytic solution. Numerical results are in agreement with the analytical cosine distribution for a single membrane in an uniform electric field. However, for a suspension of membranes, the numerical results show that the potential is distorted from the ...