Browsing by Author "Ashraf, Imtiaz"
Now showing items 1-19 of 19
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A comprehensive review of power flow controllers in interconnected power system networks
Imdadullah; Amrr, Syed Muhammad; Jamil Asghar, M. S.; Ashraf, Imtiaz; Meraj, Mohammad ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article Review)Energy security is one of the most crucial factor in the development of any nation. Interconnections among different power system networks are made to lower the overall price of power generation as well as enhance the ... -
A novel AI approach for optimal deployment of EV fast charging station and reliability analysis with solar based DGs in distribution network
Ahmad, Fareed; Ashraf, Imtiaz; Iqbal, Atif; Marzband, Mousa; Khan, Irfan ( Elsevier , 2022 , Article)The transportation sector is one of the most prevalent fossil fuel users worldwide. Therefore, to mitigate the impacts of carbon-dioxide emissions and reduce the use of non-environmentally friendly traditional energy ... -
A Novel High Gain Boost Converter for Interfacing Low Voltage PV in a DC Microgird
Samiullah, Md.; Ashraf, Imtiaz; Iqbal, Atif; Rahman, Khaliqur ( Springer Science and Business Media Deutschland GmbH , 2021 , Conference)Low terminal voltage at the output of a solar photovoltaic needs efficient boost converters for establishing a proper communication and energy transfer to the DC microgrids. In order to serve this purpose, the traditional ... -
A Transformer-Less Ultra-Gain Switched Inductor Boost Converter for DC Microgrid Applications
Samiullah, Md.; Ashraf, Imtiaz; Iqbal, Atif ( Springer Science and Business Media Deutschland GmbH , 2021 , Conference)In a DC microgrid, the integration of renewable energy sources requires a DC-to-DC converter for a better communication and energy transfer. The conventional boost converter endures many snags owing to its operation at an ... -
Cascaded Buck-Boost Derived Interlink Multi-port Converter for simultaneous operation of isolated and non-isolated Loads in a DC Nanogrid
Samiullah, Md; Islam, Shirazul; Iqbal, Atif; Ashraf, Imtiaz ( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference)The primary objective of the Multi-Port Converter (MPC) is to offer a single-stage power conversion that integrates energy sources and loads in the most efficient manner while minimizing the power density and cost. The ... -
Enhanced Energy Extraction from a Solar Panel
Tabish, Shahbaz; Iqbal, Atif; Ashraf, Imtiaz; Rahman, Khaliqur ( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference)Due the movement of the sun throughout the day, the insolation level incident on the fixed panel surface varies largely. The maximum level of insolation occurs only around noon. This leads to the panel to be under-utilised. ... -
Harmonics minimization in multilevel inverter by continuous mode aco technique
Ahmad, Salman; Iqbal, Atif; Ashraf, Imtiaz; Ganie, Zahoor Ahmad ( Springer Science and Business Media Deutschland GmbH , 2021 , Conference)Low switching frequency operation of multilevel inverter enables it for applications in high power processing needs. The stepped waveform synthesized from multilevel inverter after Fourier series analysis will result in ... -
Implementation and reliability analysis of a new transformerless high-gain DC-DC converter for renewable energy applications
Malick, Ifham H.; Zaid, Mohammad; Samiullah, Md.; Ashraf, Imtiaz; Iqbal, Atif; ... more authors ( John Wiley and Sons Inc , 2022 , Article)In this paper, a new high-gain quadratic boost DC-DC converter is proposed for a DC microgrid. The converter has a voltage multiplier cell made up of switched inductors to obtain a high voltage at the output. It has a ... -
Improved power quality operation of symmetrical and asymmetrical multilevel inverter using invasive weed optimization technique
Ahmad, Salman; Iqbal, Atif; Ashraf, Imtiaz; Meraj, Mohammad ( Elsevier , 2022 , Article)Low switching frequency pulse width modulation (PWM) technique for modulation and control of multilevel inverter in medium voltage high power applications is preferred in order to reduce the switching losses. In this ... -
Inherently boosted switched inductor hybrid converter with AC and DC outputs for DC nanogrid applications
Samiullah, Md; Al-Hitmi, Mohammed A.; Iqbal, Atif; Ashraf, Imtiaz ( Elsevier , 2023 , Article)This paper presents a novel hybrid converter which is capable of carrying AC and DC loads simultaneously at different ports. The converter is designed by using a full bridge inverter at the nodes between the active switched ... -
Novel re-configurable topologies of SLC based high gain DC-DC converters
Iqbal, Atif; Samiullah, Md; Ashraf, Imtiaz; Hitami, M. A.; Kabalci, Ersan ( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference)Standalone renewable sources such as PV (Photovoltaic) and FC (Fuel cells) are often employed as input sources to supply high voltage DC buses of microgrids. Conventional DC-DC converter used as interlinking device would ... -
Optimal Location and Energy Management Strategy for EV Fast Charging Station with Integration of Renewable Energy Sources
Ahmad, Fareed; Ashraf, Imtiaz; Iqbal, Atif; Khan, Irfan; Marzband, Mousa ( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference)As climate change becomes a significant concern, the use of electric vehicles (EVs) has emerged as an effective remedy to the pollution caused by fossil-fuel transportation. To make the transportation sector carbon ... -
Optimal location of electric vehicle charging station and its impact on distribution network: A review
Ahmad, Fareed; Iqbal, Atif; Ashraf, Imtiaz; Marzband, Mousa; khan, Irfan ( Elsevier Ltd , 2022 , Article Review)At present, the limited existence of fossil fuels and the environmental issues over greenhouse gas emissions have been directly affected to the transition from conventional vehicles to electric vehicles (EVs). In fact, the ... -
Optimal Siting and Sizing Approach of Plug-in Electric Vehicle Fast Charging Station using a Novel Meta-heuristic Algorithm
Ahmad, Fareed; Iqbal, Atif; Ashraf, Imtiaz; Marzband, Mousa; Khan, Irfan ( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference)As climate change becomes a significant concern, fostering the use of electric vehicles (EVs) has emerged as an effective remedy to the pollution caused by fossil-fuel transportation. Placing charging stations with growing ... -
Placement of electric vehicle fast charging stations in distribution network considering power loss, land cost, and electric vehicle population
Ahmad, Fareed; Iqbal, Atif; Ashraf, Imtiaz; Marzband, Mousa; Khan, Irfan ( Taylor and Francis Ltd. , 2022 , Article)Recently, electric vehicles (EVs) gained tremendous attention from government agencies and the automotive industry due to lower CO2 emissions, low maintenance, and operating costs. However, due to increasing EV penetration, ... -
Placement of Electric Vehicle Fast Charging Stations using Grey Wolf Optimization in Electrical Distribution Network
Ahmad, Fareed; Iqbal, Atif; Ashraf, Imtiaz; Marzband, Mousa; Khan, Irfan ( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference)Automotive industries and government organizations are paying close attention to electric vehicles (EVs) because of their lower CO2 emissions, cheap maintenance, and operating costs. As the number of EVs on the road grows, ... -
Placement of FCS Considering Power Loss, Land Cost, and EV Population
Ahmad, Fareed; Ashraf, Imtiaz; Iqbal, Atif ( Institute of Electrical and Electronics Engineers Inc. , 2023 , Conference)Electric vehicles (EVs) have recently gotten a lot of attention from the government and the auto industry. This is because EVs produce less CO2 and cost less to run and maintain. However, as EV adoption rises, the pressure ... -
Split Duty Super Boost Converter for High Voltage Applications in a DC Microgrid
Samiullah, Md; Iqbal, Atif; Ashraf, Imtiaz; Rahme, Sandy ( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)In order to establish an appropriate interaction of a renewable DC generating source such as Photovoltaic or Fuel cells with a DC microgrid, there is need of some DC-DC converter with suitable attributes and features. ... -
Voltage Lift Switched Inductor Double Leg Converter with Extended Duty Ratio for DC Microgrid Application
Samiullah, Md; Iqbal, Atif; Ashraf, Imtiaz; Maroti, Pandav Kiran ( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)In a DC microgrid, while integrating the low voltage sources such as Fuel cells and photovoltaics, an efficient DC-DC converter is crucially needed. Contributing to a high voltage whilst being operated on a low duty ratio ...









