تصفح حسب المؤلف "Rahman, S."
السجلات المعروضة 1 -- 11 من 11
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A New Variable Frequency Control of 49-Level Cascaded Packed U-Cell Voltage Source Inverter
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)Requirement of large number of levels with lower number of switching devices has made asymmetrical converters more popular than the symmetrical ones. Asymmetrical cascaded multilevel inverters (ACMLI) can achieve high ... -
Common mode voltage reduction technique in a three-to-three phase indirect matrix converter
( Institution of Engineering and Technology , 2018 , Article)In this study, common mode voltage (CMV) reduction using space vector pulse-width modulation (SVPWM) technique is proposed for a three-phase induction motor drive fed by a three-to-three phase indirect matrix converter ... -
Hardware implementation of a new single input double output L-L converter for high voltage auxiliary loads in fuel-cell vehicles
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference)Typically, the fuel cell output voltage magnitude is low and a series connection of several fuel cells is not a practical solution to achieve high voltage for vehicular applications. Therefore, DC-DC converter with a high ... -
The incidence of Polycystic Ovarian Syndrome among Reproductive Females At Qatar University: A Cross-sectional study
( International Federation of Clinical Chemistry and Laboratory Medicine , 2013 , Conference)Polycystic Ovarian Syndrome is found to be at least 6-10% prevalent all over the world. It is the most common endocrine pathology among females of reproductive age. It is by definition a syndrome having multiple manifestations ... -
New tri-switching state non-isolated high gain DC-DC boost converter for microgrid application
( Institution of Engineering and Technology , 2019 , Article)High efficiency is an important requirement from DC-DC converter in DC microgrid system when integrated with renewable energy sources. This study proposes a new tri-switching state non-isolated high gain boost converter ... -
Novel control algorithm for V/F control of PWAM based induction motor drive
( 44th Annual Conference of the IEEE Industrial Electronics Society, IECON 2018; Omni Shoreham , 2018 , Conference)© 2018 IEEE. In this paper, three-phase induction motor su by multilevel quasi impedance source inverter (qZSI) is contr with V/f technique. Application of pulse width amplitud modulation (PWAM) technique for controlling ... -
Novel level-shifted PWM technique for cascaded multilevel quasi-impedance source inverter
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)In a multilevel quasi-impedance source inverter (qZSI), phase-shifted carrier pulsewidth modulation (PS-PWM) is the most popular modulation method as it offers advantages such as simple implementation and evenly powered ... -
Novel voltage balancing algorithm for single-phase cascaded multilevel inverter for post-module failure operation in solar photovoltaic applications
( Institution of Engineering and Technology , 2019 , Article)Four cascaded quasi-impedance source inverter (qZSI) modules are required for achieving nine-level output voltage waveform. In case of one module failure, number of levels in output voltage are reduced to seven. This leads ... -
Synthesis and evaluation of copper-supported titanium oxide nanotubes as electrocatalyst for the electrochemical reduction of carbon oxide to organics
( MDPI AG , 2019 , Article)Carbon dioxide (CO 2 ) is considered as the prime reason for the global warming effect and one of the useful ways to transform it into an array of valuable products is through electrochemical reduction of CO 2 (ERC). This ... -
Virtual flux oriented sensorless direct power control of qzs inverter connected to grid for solar pv applications
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference)Impedance source inverters (Z-source and Quazi-Z-source (QZS)) are the promising converter topologies in the future generation because of the buck, boost and buck-boost modes of operation. In this paper, three phase voltage ... -
Vulnerable newborn types: analysis of subnational, population-based birth cohorts for 541 285 live births in 23 countries, 2000–2021
( Wiley , 2023 , Article)Objective: To examine prevalence of novel newborn types among 541 285 live births in 23 countries from 2000 to 2021. Design: Descriptive multi-country secondary data analysis. Setting: Subnational, population-based birth ...
