Published Paper's Abstract

Published Paper's Abstract 

S.M Masum; Kadi Louiza; "Study on the Effects of Dynamic Partial Shading on PV DC-DC Boost and Super-Lift Luo Converter " -(RETMCS 2024)

ieeexplore.ieee.org/document/10881735/  

Abstract : 

Dynamic partial shading significantly impacts the performance and stability of photovoltaic (PV) systems, particularly the efficiency of DC-DC converters. This paper presents a comprehensive study on the effects of dynamic partial shading on two widely used converters: the Boost converter and the Super-Lift Luo converter. By simulating a series-parallel configuration of a 9-module PV array under dynamic shading scenarios such as passing airplanes and moving clouds, we assess the converters' transient responses and steady-state performance. Our analysis reveals critical insights into the voltage output stability and response time of non-isolated DC/DC converters under varying irradiance levels. We also explore the recovery time to stable states following sudden shading events. Performance metrics indicate that the Luo converter exhibits superior stability compared to the Boost converter, demonstrating its robustness in environments with frequent shading. 

S.M Masum; Earshed Al Mamun ; "Comparative Study of Grid-Tied PV Systems in Bangladesh's Coastal Gems " -(GECOST 2024).
https://ieeexplore.ieee.org/document/10474676

Abstract:

The deployment of renewable energy on a wide scale is becoming increasingly popular. Developing countries like Bangladesh are still trying to meet their basic energy needs according to the population growth, sustainable energy is the only real solution to the world's impending power shortage. Bangladesh has two wonderful locations with great natural resources. The longest natural sea beach, Cox's Bazar, and Saint Martin, a coral island. Solar photovoltaic (PV) is one solution that has vast potential for Bangladesh due to climate and climatic circumstances. This paper presents a comparative study of grid-tied PV systems in Cox's Bazar and St. Martin's Island using the simulation software PV syst. The study compares the performance and future implications of grid-connected PV systems in the two locations, taking into account factors such as geographical location, solar radiation, temperature, and system losses. The results show that PV systems in both locations have significant performance and possibilities. However, the study also highlights the potential for grid-connected PV systems in Cox's Bazar over St. Martin's Island that can contribute greatly to addressing the country's energy needs. 

S.M Masum; Salma Nazia Rahman; "Investigating the Potential of a Solar Plant at Payra Port in Revolutionizing Bangladesh's Energy Landscape"(ieCRES-2023). DOWNLOAD ABSTRACT BOOK (PAGE 19).   https://ieeexplore.ieee.org/document/10209485

Abstract:

Globally, solar energy is a source of renewable energy that is expanding quickly. To produce power, renewable energy technologies like photovoltaic cells are increasingly being advised as concern about greenhouse gas emissions and environmental issues rises. Bangladesh currently has 650.53 Megawatts of installed renewable energy capacity. A unique possibility for renewable energy in the nation exists at the Port of Payra in Kalapara, Patuakhali, Bangladesh, which receives an average daily solar radiation of 4.34 kWh/m2 per year. In this particular region, the location boasts several major internal strengths, such as its wide channel, river connectivity, and transportation infrastructure, which make it a place of tremendous potential. This study investigated and showed the total energy produced by a 10 kWp photovoltaic grid-connected system with various system losses. The analysis shows that a total of 15,021 kWh of energy can be injected into the grid from Payra port annually. Over a year, the proposed system performance ratio was predicted to be 91.2%, demonstrating the enormous potential for a solar plant to supply Bangladesh’s rising energy needs in the future. 

S.M Masum; Salma Nazia Rahman; Md. Mozammal Haque; Md. Sohel Rana (MISTA 2022, May) "Performance analysis and simulation design of a soft switching Cuk DC/DC converter with controllers". https://ieeexplore.ieee.org/document/9837686

Abstract:

This paper proposes a design simulation of a soft-switching Cuk DC to DC Converter with a single switch. By eliminating extra switches, the proposed converter can be controlled with a controller. A single MOSFET is used as a power switch that turns on at zero-current switching (ZCS) and turns off at zero-voltage switching (ZVS) conditions. Analysis of Total Harmonic Distortion (THD) between the proposed converter and two switched converter clearly showed the novelty of the suggested converter with improved quality. The proposed converter can operate at high switching frequencies and with high output for an extensive load scale. The simulation of MATLAB/ Simulink with 100W/50Khz soft-switched Pulse-width modulation (PWM) Cuk converter produced 100 W from 100 V input voltage while reducing current stress and extra switch loss. A comparison of the proposed soft-switched Cuk and conventional Cuk converter is taken into account. PID and PI controllers are employed in this study to investigate the performance and stability of the proposed converter. Under any influence of different parasitic resistance Ron of switching power devices, load conditions, and variable input voltage, the proposed converter can provide robust output voltage with improved dynamic performance operated with linear controllers. 

Sakhawat Hossen Rakib; S.M Masum; Atika Farhana; Md. Aminul Islam; Md. Fokhrul Islam; Md. Taslim Reza.(ICAEEE 2022,February ).“Design of a low cost Ultraviolet Disinfection unit to minimize the cross-contamination of COVID-19 in transport”.    https://ieeexplore.ieee.org/document/9836348

Abstract:

In this work, a cost-effective disinfection system for Coronavirus Disease of 2019 (COVID-19) is proposed to be used inside public transport. The disinfection system is twofold, firstly containing a tower unit where UV-C (Ultraviolet type-C) lamps are positioned in parallel, in such a way that, 360-degree space is covered, and secondly a power unit that incorporates robotics and electrical parts. The UVC unit is a separate and movable tower that can be placed anywhere inside a vehicle horizontally or vertically. UV lamps in the tower have a 254 nm wavelength with a total power of 180 Watt. The system can provide a dose of 16.9mj/cm2 within 26.83 seconds if the distance of the targeted surface inside a vehicle from the UVC light source is 1.5 meters. Various distances from the UV source to the targeted surface inside the vehicle are chosen and calculated the required corresponding times to achieve the required dose to inactivate all viral concentrations. The developed disinfection system not only minimizes the growth of severe acute respiratory syndrome coronavirus 2 (SARS−CoV−2) by performing robotic features ensuring human detection auto turn off but also utilizes minimum labor work which is vital in the current Covid-19 pandemic.

Sakhawat Hossen Rakib, S.M Masum, Md. Rashadul Islam Patwari, Rafatul Alam Fahima, Atika Farhana, Md. Aminul Islam. (ICECIT 2021, September). “Design and Development of a low-cost Ultraviolet Disinfection system to reduce the crossinfection of SARS-CoV-2 in ambulances”.    https://ieeexplore.ieee.org/document/9641131

Abstract:

In this study, a low-cost Ultraviolet disinfection system is proposed to be used inside ambulances for minimizing the cross-infection of Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) during patient transfer. The disinfection system consists of a tower unit that contains the Ultraviolet type C (UVC) light fixture and a control box where the power unit is placed. The UVC tower unit is portable, lightweight, and can be easily placed anywhere inside an ambulance. Two ultraviolet (UV) lamps used in the tower part have 254 nm wavelength with a total power of 180 Watt. The disinfection system can provide a dose of 16.9mj/cm2 within 1.06 seconds and 26.83 seconds if the distance of the targeted surface inside the ambulance from UV sources are 0.3 meters and 1.5 meters respectively. We have chosen various distances from UV source to targeted surface inside an ambulance and calculated the required corresponding times to reach the required dose to inactivate all viral concentrations. The designed disinfection system not only reduces the spread of SARS-CoV-2 by the semi-autonomous way inside ambulances but also requires the least labor efforts which are crucial in the current Covid-19 pandemic.