A Robust MPPT Control Based on Double Ended Forward Converter Architecture

Khan, Muhammad Usman; Hasan, K. M.; Murtaza, Ali Faisal; Usman, Hamisu; Sher, Hadeed Ahmed

doi:10.32604/cmc.2022.019381

Cited by 2 publications

(1 citation statement)

References 22 publications

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“…At different time intervals, 5 mL of the sample was collected and replaced with a fresh buffer of a specified pH to maintain sink conditions. Then, the samples were analyzed at 231 nm on the UV spectrophotometer to estimate drug concentration (Khan et al, 2011). Afterward, cumulative drug release (Eq.…”

Section: Drug Releasementioning

confidence: 99%

Development and evaluation of pH sensitive semi-interpenetrating networks: assessing the impact of itaconic acid and aloe vera on network swelling and cetirizine release

Ajaz

Bukhsh

Kamal

et al. 2023

Front. Bioeng. Biotechnol.

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Hydrogels are crosslinked three-dimensional networks, and their properties can be easily tuned to target the various segments of the gastrointestinal tract (GIT). Cetirizine HCl (CTZ HCl) is an antihistaminic drug, which when given orally can upset the stomach. Moreover, this molecule has shown maximum absorption in the intestine. To address these issues, we developed a pH-responsive semi-interpenetrating polymer network (semi-IPN) for the delivery of CTZ HCl to the lower part of the GIT. Initially, 10 different formulations of itaconic acid-grafted-poly (acrylamide)/aloe vera [IA-g-poly (AAm)/aloe vera] semi-IPN were developed by varying the concentration of IA and aloe vera using the free radical polymerization technique. Based on swelling and sol-gel analysis, formulation F5 containing 0.3%w/w aloe vera and 6%w/w IA was chosen as the optimum formulation. The solid-state characterization of the optimized formulation (F5) revealed a successful incorporation of CTZ HCl in semi-IPN without any drug-destabilizing interaction. The in vitro drug release from F5 showed limited release in acidic media followed by a controlled release in the intestinal environment for over 72 h. Furthermore, during the in vivo evaluation, formulation F5 did not affect the hematological parameters, kidney, and liver functions. Clinical observations did not reveal any signs of illness in rabbits treated with hydrogels. Histopathological images of vital organs of treated animals showed normal cellular architecture. Thus, the results suggest a non-toxic nature and overall potential of the developed formulation as a targeted drug carrier.

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Section: Drug Releasementioning

confidence: 99%

Development and evaluation of pH sensitive semi-interpenetrating networks: assessing the impact of itaconic acid and aloe vera on network swelling and cetirizine release

Ajaz

Bukhsh

Kamal

et al. 2023

Front. Bioeng. Biotechnol.

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A Modified-Simplified MPPT Technique for Three-Phase Single-State Grid-Connected PV Systems

Aurairat¹,

Plangklang²

2022

Computers, Materials &Amp; Continua

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Nowadays, the single state inverter for the grid-connected photovoltaic (PV) systems is becoming more and more popular as they can reduce circuit complexity resulting in less power losses of the inverter. This paper focuses on the use of model predictive control (MPC) to control a 3-phase and 2-level single-state grid-connected inverter in order to regulate the PV maximum power point (MPP). The algorithm of MPC scheme was done to measure the simultaneous current signal including predicting the next sampling current flow. The reference current (I d * ) was used to control the distribution of electrical power from the solar cell to the grid. To be able to control the maximum power point tracking (MPPT) when the sunlight suddenly changes, so that a developing MPPT based on estimation current perturbation and observation (ECP&O-MPPT) technique was used to control the reference current. This concept was experimented by using MATLAB/Simulink software package. The proposed technique was tested and compared with the old technique. The simulation results showed that the developed MPPT technique can track the MPP faster when the light changes rapidly under 1,000 W/m 2 , 25°C standard climatic conditions. The MPPT time was 0.015 s. The total harmonic distortion (THD) was 2.17% and the power factor was 1.

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A Robust MPPT Control Based on Double Ended Forward Converter Architecture

Cited by 2 publications

References 22 publications

Development and evaluation of pH sensitive semi-interpenetrating networks: assessing the impact of itaconic acid and aloe vera on network swelling and cetirizine release

Development and evaluation of pH sensitive semi-interpenetrating networks: assessing the impact of itaconic acid and aloe vera on network swelling and cetirizine release

A Modified-Simplified MPPT Technique for Three-Phase Single-State Grid-Connected PV Systems

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