This paper presents the current state of mathematical modelling electrochemical behaviour lithium-ion batteries (LIBs) as they are charged and discharged. It reviews models developed by Newman co-workers, both in cases dilute moderately concentrated electrolytes indicates assumptions required for their development. Particular attention is paid to interface conditions imposed between electrolyte active electrode material; necessary derived one these, Butler–Volmer relation, order ensure...

Recently, the rapid efficiency of perovskite solar cells has increased from 3.9% to 25% attracting attention researchers and manufacturers. However, instability issue in terms moisture, thermal, light due dynamic behavior resulting degradation leading unstable voltage current. This phenomenon occurs charge accumulation at interface (blend phase layer) between electron transport layer (ETL) hole (HTL) via migration diffusion mechanism which can be represented by a drift-diffusion model. paper...

This paper presents the analysis of temperature rise on PCB. Numerical solutions using Galerkin approach that is one Finite Element Method (FEM) was used to study and analyze Then, an algorithm has been developed MATLAB. The PCB with four different width copper supplied range direct current (DC) from 0.5 5 Amperes capture data by FLIR i5 Infrared Thermal Imager. then compared numerical result obtain error. In order minimize error, done based heat transfer film coefficient obtained...

This paper presents the development of fish length measurement system to obtain effectively without any contact fish. The device which are small and portable, consists a USB camera that will be connected computer for image capturing. A range sensor is combined with detect fix capturing distance. microcontroller control circuit LED indication light used allocate at right distance from it measures. Image processing software, Halcon analyze calibrate measurement. Mathematical equations or...

This paper addresses a rotary motion type of electromagnetic actuator that compares two types actuators; i.e the Permanent Magnet Switching Flux (PMSF) and Reluctance (SR) actuator. The is combination permanent magnets (PM) force optimizations are accomplished by manipulating parameters; i.e. (i) poles ratio stator rotor; (ii) actuator’s size; (iii) number winding turns; (iv) air gap thickness between rotor through Finite Element Analysis Method (FEM) using ANSYS Maxwell 3D software....

Perovskite solar cell (PSC) is one of the advanced third-generation cells that have rapid efficiencies but instability issues in terms air, moisture, and UV light sensitivity becomes a barrier to commercialization. The issue due charge accumulation at interface PSC reducing its efficiency. This research focuses on operation PSCs through one-dimensional (1D) drift-diffusion model for planar heterojunction PSCs. also accounts electric potential by Poisson’s equation, ion generation,...

This paper focuses on the discharge characteristics of two cathode materials, namely Lithium Iron Phosphate (LiFePO4) and Cobalt Oxide (LiCoO2). The materials have different maximum concentrations. A mathematical model lithium ion battery (LIB) for half-cell based drift-diffusion is used to practical operations LIB. takes into account electrolyte equation transport in electrode particles solved numerically using Method Line technique. simulated curves both been verified with experimental...

The article paper presents a strategic tool used in maintenance strategy deployment using failure mode and effect analysis method oil gas semi hermetic compressor perspective. This research aims to study formulate framework of Analytical Hierarchical Process Failure Mode Effect Analysis HVAC at the offshore platform. case has been conducted systematically company involved activities regular basis servicing equipment parts which this focusing on Semi Hermetic Compressors studies taken from...

This paper presents the current state of mathematical modelling electrochemical behaviour lithium-ion batteries as they are charged and discharged. It reviews models developed by Newman co-workers, both in cases dilute moderately-concentrated electrolytes indicates assumptions required for their development. Particular attention is paid to interface conditions imposed between electrolyte active electrode material; necessary derived one these, Butler-Volmer relation, order ensure physically...

We formulate a model for transport (of both Li + ions and generic N - ion species) in moderately dilute electrolyte i.e. an which ionic concentrations ) are small compared to that of the solvent (so need not be treated explicitly), but sufficiently with Nernst-Planck theory. approximate theory by assuming local various species balanced (charge neutral) except regions electrolyte-electrode interface where (de-) intercalation reaction occurs. The resulting is similar form presented Newman...

This paper proposes a new signal processing technique using time-frequency distribution (TFD), namely S-transform (ST) for battery parameters estimation. Compared to other TFDs such as short time Fourier transform (STFT) and wavelet (WT), ST offers more promising results in low frequency application analysis, especially battery. The of the are instantaneous means square voltage (VRMS (t)), direct current (VDC (t)) alternating (VAC extracted from representation (TFR). Simulation through...

Many studies have been conducted to investigate the effect of environmental, mechanical and electrical stresses on insulator. However, physical process discharge phenomenon, leading breakdown insulator surface are lacking difficult comprehend. Therefore, this paper analysed charge carrier generation mechanism that can cause free generation, toward development. Besides, developed a model based outdoor Nernst's Planck theory was used in order behaviour carriers while Poisson's equation...

Nowadays, the interest of high proficiency Lithium ion batteries is increasing as they provide volumetric energy densities and to meet demand exponentially growth electronic devices. Furthermore, LIB has shown their potential offer performance rechargeable battery in research electric vehicles. Electrochemical process encompasses a complex transport between anode cathode within an electrolyte. The multiscale model consists charge electrode particle electrolyte reaction rate at...