Outputs (52)

A comprehensive review on carbon footprint of regular diet and ways to improving lowered emissions (2023)
Journal Article
Nabipour Afrouzi, H., Ahmed, J., Mobin Siddique, B., Khairuddin, N., & Hassan, A. (2023). A comprehensive review on carbon footprint of regular diet and ways to improving lowered emissions. Results in Engineering, 18, Article 101054. https://doi.org/10.1016/j.rineng.2023.101054

In light of the SDG goals, carbon emissions from different food and food-related products have been under serious scrutiny in recent years. Despite the increasing awareness of global warming and the carbon footprint issue, food culture in different s... Read More about A comprehensive review on carbon footprint of regular diet and ways to improving lowered emissions.

Comprehensive review on the feasibility of developing wave energy as a renewable energy resource in Australia (2022)
Journal Article
Wimalaratna, Y. P., Hassan, A., Afrouzi, H. N., Mehranzamir, K., Ahmed, J., Siddique, B. M., & Liew, S. C. (2022). Comprehensive review on the feasibility of developing wave energy as a renewable energy resource in Australia. Cleaner Energy Systems, 3, Article 100021. https://doi.org/10.1016/j.cles.2022.100021

The facts are that increasing energy demand, depletion of fossil fuel, and greenhouse gas emissions have increased the world's interest in renewable energy. Out of all RE options, Wave Energy (WE) is the least harnessed one despite the availability o... Read More about Comprehensive review on the feasibility of developing wave energy as a renewable energy resource in Australia.

Analysing wind power penetration in hybrid energy systems based on techno-economic assessments (2022)
Journal Article
Wimalaratna, Y. P., Afrouzi, H. N., Mehranzamir, K., Siddique, M. B. M., Liew, S. C., & Ahmed, J. (2022). Analysing wind power penetration in hybrid energy systems based on techno-economic assessments. Sustainable Energy Technologies and Assessments, 53(B), Article 102538. https://doi.org/10.1016/j.seta.2022.102538

Wind is an environmentally friendly energy source that can be harnessed as an on-shore and off-shore resource. Wind energy, combined with other renewable energy systems, has resulted in a more reliable, feasible, and efficient stand-alone system, kno... Read More about Analysing wind power penetration in hybrid energy systems based on techno-economic assessments.

A comprehensive scientometric analysis on hybrid renewable energy systems in developing regions of the world (2022)
Journal Article
Sohail, M., Afrouzi, H. N., Mehranzamir, K., Ahmed, J., Mobin Siddique, M. B., & Tabassum, M. (2022). A comprehensive scientometric analysis on hybrid renewable energy systems in developing regions of the world. Results in Engineering, 16, Article 100481. https://doi.org/10.1016/j.rineng.2022.100481

Energy crises, increasing electricity prices, and having no access to the grid electricity are the leading issues in developing countries of Asia, the Middle East, and Sub-Saharan Africa. Developing hybrid renewable energy systems in off-grid or grid... Read More about A comprehensive scientometric analysis on hybrid renewable energy systems in developing regions of the world.

Scenario-based investigation on the effect of partial shading condition patterns for different static solar photovoltaic array configurations (2021)
Journal Article
Nazer, M. N. R., Noorwali, A., Tajuddin, M. F. N., Khan, M. Z., Tazally, M. A. I. A., Ahmed, J., …Kumar, N. M. (2021). Scenario-based investigation on the effect of partial shading condition patterns for different static solar photovoltaic array configurations. IEEE Access, 9, 116050-116072. https://doi.org/10.1109/ACCESS.2021.3105045

This paper presents an in-depth analysis and investigation on the performance of static photovoltaic (PV) array configurations subjected to various partial shading conditions (PSCs). Under PSCs, the electrical characteristics of the PV modules are cr... Read More about Scenario-based investigation on the effect of partial shading condition patterns for different static solar photovoltaic array configurations.

A skipping adaptive P&O MPPT for fast and efficient tracking under partial shading in PV arrays (2021)
Journal Article
Ahmed, J., Salam, Z., Kermadi, M., Afrouzi, H. N., & Ashique, R. H. (2021). A skipping adaptive P&O MPPT for fast and efficient tracking under partial shading in PV arrays. International Transactions on Electrical Energy Systems, 31(9), Article e13017. https://doi.org/10.1002/2050-7038.13017

This work presents a new Maximum Power Point Tracking (MPPT) scheme which predicts the local peak positions precisely and tracks the global peak under partial shading effectively. In addition to that, a skipping mechanism is integrated into it, which... Read More about A skipping adaptive P&O MPPT for fast and efficient tracking under partial shading in PV arrays.

Sizing and economic analysis of stand-alone hybrid photovoltaic-wind system for rural electrification: A case study Lundu, Sarawak (2021)
Journal Article
Afrouzi, H. N., Hassan, A., Wimalaratna, Y. P., Ahmed, J., Mehranzamir, K., Liew, S. C., & Malek, Z. A. (2021). Sizing and economic analysis of stand-alone hybrid photovoltaic-wind system for rural electrification: A case study Lundu, Sarawak. Cleaner Engineering and Technology, 4, Article 100191. https://doi.org/10.1016/j.clet.2021.100191

Energy Consumption has been increasing at an alarming rate due to the growing energy need. More and more non-renewable sources are harvested to fulfill the energy demand resulting in and rising environmental health issues. However, harvesting Solar a... Read More about Sizing and economic analysis of stand-alone hybrid photovoltaic-wind system for rural electrification: A case study Lundu, Sarawak.

Review on the Potential of a Tidal Energy Harnessing System in Malaysia (2021)
Book Chapter
Prashanth, P. H., Afrouzi, H. N., Wooi, C., Mehranzamir, K., Liew, S. C., & Ahmed, J. (2021). Review on the Potential of a Tidal Energy Harnessing System in Malaysia. In M. Syahril Bahari, A. Harun, Z. Zainal Abidin, R. Hamidon, & S. Zakaria (Eds.), Intelligent Manufacturing and Mechatronics: Proceedings of SympoSIMM 2020 (103-111). Springer. https://doi.org/10.1007/978-981-16-0866-7_8

Tidal Energy is one the most prominent and promising renewable energy sources due to its consistency in electricity generation. Malaysia, being a country with its vast resources is persistently affecting its research towards the transition of using c... Read More about Review on the Potential of a Tidal Energy Harnessing System in Malaysia.

An Analysis and Modeling of the Class-E Inverter for ZVS/ZVDS at Any Duty Ratio with High Input Ripple Current (2021)
Journal Article
Ashique, R. H., Shihavuddin, A., Khan, M. M., Islam, A., Ahmed, J., Arif, M. S. B., …Siddiquee, A. (2021). An Analysis and Modeling of the Class-E Inverter for ZVS/ZVDS at Any Duty Ratio with High Input Ripple Current. Electronics, 10(11), Article 1312. https://doi.org/10.3390/electronics10111312

This paper presents an analysis and modeling of the class-E inverter for ZVS/ZVDS execution at any duty ratio. The methodology is to determine the input current to the inverter analytically under the assumption that it always remains positive. The la... Read More about An Analysis and Modeling of the Class-E Inverter for ZVS/ZVDS at Any Duty Ratio with High Input Ripple Current.

Techno‐economic analysis of direct combustion and gasification systems for off‐grid energy supply: A case for organic rankine cycle and dual fluidized‐bed (2021)
Journal Article
Bagherian, M. A., Mehranzamir, K., Ahmed, J., Nafea, M., Nabipour‐Afrouzi, H., Wooi, C., …Alizadeh, S. M. (2021). Techno‐economic analysis of direct combustion and gasification systems for off‐grid energy supply: A case for organic rankine cycle and dual fluidized‐bed. IET Renewable Power Generation, 15(12), 2596-2614. https://doi.org/10.1049/rpg2.12196

Biomass is one of the most versatile sustainable energy sources. This versatility allows utilization of different biomass feedstock using a verity of conversion techniques. Often, a biomass-to-bioenergy conversion method is selected depending on the... Read More about Techno‐economic analysis of direct combustion and gasification systems for off‐grid energy supply: A case for organic rankine cycle and dual fluidized‐bed.

A Comprehensive Review on the Application of Bioethanol/Biodiesel in Direct Injection Engines and Consequential Environmental Impact (2021)
Journal Article
Siddique, M. B. M., Khairuddin, N., Ali, N. A., Hassan, M. A., Ahmed, J., Kasem, S., …Afrouzi, H. N. (2021). A Comprehensive Review on the Application of Bioethanol/Biodiesel in Direct Injection Engines and Consequential Environmental Impact. Cleaner Engineering and Technology, 3, https://doi.org/10.1016/j.clet.2021.100092

Bioethanol/biodiesel are deemed a highly suitable alternative to conventional fuels in the near future due to their versatility in production techniques and operability. This paper examines the engine performance and possible scope of improvement in... Read More about A Comprehensive Review on the Application of Bioethanol/Biodiesel in Direct Injection Engines and Consequential Environmental Impact.

A Comprehensive Review on Available/Existing Renewable Energy Systems in Malaysia and Comparison of Their Capability of Electricity Generation in Malaysia (2021)
Book Chapter
Afrouzi, H. N., Wimalaratna, Y. P., Ahmed, J., Mehranzamir, K., Liew, S. C., Wooi, C., & Siddiquea, B. M. (2021). A Comprehensive Review on Available/Existing Renewable Energy Systems in Malaysia and Comparison of Their Capability of Electricity Generation in Malaysia. In L. Wang, W. Cao, & S. Hu (Eds.), Entropy and Exergy in Renewable Energy. InTech. https://doi.org/10.5772/intechopen.96586

Malaysia is one of the fastest emerging and developing countries in the world. To drive the economical workhorse, large amounts of power is required. The power demand has risen to 156,003 GWh per year in the year 2016, almost 30,000 GWh more than 5 y... Read More about A Comprehensive Review on Available/Existing Renewable Energy Systems in Malaysia and Comparison of Their Capability of Electricity Generation in Malaysia.

Basic Home Automation Using Smart Sockets with Power Management (2021)
Journal Article
Ahmed, J., Then, Y. L., Asif, N., & Kashem, S. (2021). Basic Home Automation Using Smart Sockets with Power Management. International Journal of Integrated Engineering, 13(2), 99-108

The power generated in today’s time is dominated using fossil fuels that may get exhausted within the coming decades. Monitoring and management of the energy consumption hold a prime standing due to the discrepancy between power demand and production... Read More about Basic Home Automation Using Smart Sockets with Power Management.

An effective salp swarm based MPPT for photovoltaic systems under dynamic and partial shading conditions (2021)
Journal Article
Jamaludin, M. N. I., Tajuddin, M. F. N., Ahmed, J., Azmi, A., Azmi, S. A., Ghazali, N. H., …Alhelou, H. H. (2021). An effective salp swarm based MPPT for photovoltaic systems under dynamic and partial shading conditions. IEEE Access, 9, 34570-34589. https://doi.org/10.1109/ACCESS.2021.3060431

This study proposes a duty cycle-based direct search method that capitalizes on a bioinspired optimization algorithm known as the salp swarm algorithm (SSA). The goal is to improve the tracking capability of the maximum power point (MPP) controller f... Read More about An effective salp swarm based MPPT for photovoltaic systems under dynamic and partial shading conditions.

Wind Power Integration with Smart Grid and Storage System: Prospects and Limitations (2020)
Journal Article
Kashem, S. B. A., Chowdhury, M. E., Khandakar, A., Ahmed, J., Ashraf, A., & Shabrin, N. (2020). Wind Power Integration with Smart Grid and Storage System: Prospects and Limitations. International Journal of Advanced Computer Science and Applications, 11(5), https://doi.org/10.14569/IJACSA.2020.0110570

Wind power generation is playing a pivotal role in adopting renewable energy sources in many countries. Over the past decades, we have seen steady growth in wind power generation throughout the world. This article aims to summarize the operation, con... Read More about Wind Power Integration with Smart Grid and Storage System: Prospects and Limitations.

Recent developments of MPPT techniques for PV systems under partial shading conditions: a critical review and performance evaluation (2020)
Journal Article
Kermadi, M., Salam, Z., Eltamaly, A. M., Ahmed, J., Mekhilef, S., Larbes, C., & Berkouk, E. M. (2020). Recent developments of MPPT techniques for PV systems under partial shading conditions: a critical review and performance evaluation. IET Renewable Power Generation, 14(17), 3401-3417. https://doi.org/10.1049/iet-rpg.2020.0454

This review covers global maximum power point tracking (GMPPT) methods for photovoltaic (PV) systems under partial shading conditions. Unlike the previous review works that primarily focused on soft computing and hybrid GMPPT, this study gives exclus... Read More about Recent developments of MPPT techniques for PV systems under partial shading conditions: a critical review and performance evaluation.

A comprehensive investigation of suitable biomass raw materials and biomass conversion technology in Sarawak, Malaysia (2020)
Journal Article
Kashem, S. B. A., Chowdhury, M., Khandakar, A., Tabassum, M., Ashraf, A., & Ahmed, J. (2020). A comprehensive investigation of suitable biomass raw materials and biomass conversion technology in Sarawak, Malaysia. International Journal of Technology, 1(2), 75-105

Nowadays, reducing pollution, saving mother Earth had become everyone’s responsibility. However, the great improvement in technologies leads to large energy demands. Many countries have tried to find renewable energy as their alternative energy sourc... Read More about A comprehensive investigation of suitable biomass raw materials and biomass conversion technology in Sarawak, Malaysia.

An Investigation of Passive Cooling in a Building in Malaysia (2020)
Journal Article
Kashem, S. B. A., Chowdhury, M., Khandakar, A., Tabassum, M., Ashraf, A., & Ahmed, J. (2020). An Investigation of Passive Cooling in a Building in Malaysia. International Journal of Technology, 1(2), 4-27

In hot humid countries like Malaysia, a comfortably thermal environment is what people look for. To achieve such conditions, a technique called passive cooling must be the optimal choice. Many other techniques have been investigated over the years an... Read More about An Investigation of Passive Cooling in a Building in Malaysia.

Feasibility, Sizing and Economic Analysis of Solar Energy System for Green Swinburne Campus (2020)
Conference Proceeding
Riphque, M. A., Nabipour-Afrouzi, H., Wooi, C., Liew, S., Mehranzamir, K., & Ahmed, J. (2020). Feasibility, Sizing and Economic Analysis of Solar Energy System for Green Swinburne Campus. In 2020 13th International UNIMAS Engineering Conference (EnCon). https://doi.org/10.1109/EnCon51501.2020.9299333

In 2011 alone, Malaysia has spent a hefty RM14.5 billion in buying fossil fuels to generate electricity. With the cost of fossil fuels rising each year, the nation is looking to rely on more sustainable energy sources. One way to decrease the relianc... Read More about Feasibility, Sizing and Economic Analysis of Solar Energy System for Green Swinburne Campus.

Development of biomass-fueled cogeneration systems for off-grid electrification (2020)
Conference Proceeding
Bagherian, M. A., Mehranzamir, K., Ahmed, J., Nafea, M., Nabipour-Afrouzi, H., & Wooi, C. (2020). Development of biomass-fueled cogeneration systems for off-grid electrification. In 2020 2nd International Conference on Smart Power & Internet Energy Systems (SPIES) (566-571). https://doi.org/10.1109/SPIES48661.2020.9243068

Over the past centuries, discovery and utilization of fossil fuels has revolutionized the world pushing societies towards modernization. This source of energy that is being referred as black gold, has faced extensive consumption which consequently st... Read More about Development of biomass-fueled cogeneration systems for off-grid electrification.

Autonomous Vehicle Sunshade Using Aluminum Panels (2020)
Book Chapter
Kashem, S. B. A., Shahid, F., Qidwai, U., Suresh, P., Ahmed, J., & Saravanakumar, U. (2020). Autonomous Vehicle Sunshade Using Aluminum Panels. In P. Suresh, U. Saravanakumar, & M. S. H. Al Salameh (Eds.), Advances in Smart System Technologies: Select Proceedings of ICFSST 2019 (679-688). Springer. https://doi.org/10.1007/978-981-15-5029-4_56

The heat build-up inside of a vehicle cabin due to the direct composure of thermal energy when parked outside during the day can be a huge dilemma, the intensity of the problem can be decreased by covering the windows of the automobile, but drivers a... Read More about Autonomous Vehicle Sunshade Using Aluminum Panels.

Experimental Analysis of Gravity and Buoyancy Powered Energy Generation Storage Systems (2020)
Book Chapter
Kashem, S. B. A., Ngambi, D. T., Ahmed, J., Qidwai, U., & Suresh, P. (2020). Experimental Analysis of Gravity and Buoyancy Powered Energy Generation Storage Systems. In P. Suresh, U. Saravanakumar, & M. S. H. Al Salameh (Eds.), Advances in Smart System Technologies: Select Proceedings of ICFSST 2019 (813-826). Singapore: Springer. https://doi.org/10.1007/978-981-15-5029-4_70

The concept of harnessing energy from buoyancy as well as the ability to have underwater energy storage is an area of research that, compared to other renewable energy generation techniques, is relatively unexplored. This study presents an experiment... Read More about Experimental Analysis of Gravity and Buoyancy Powered Energy Generation Storage Systems.

Assessment of maximum power point trackers performance using direct and indirect control methods (2020)
Journal Article
Kermadi, M., Mekhilef, S., Salam, Z., Ahmed, J., & Berkouk, E. M. (2020). Assessment of maximum power point trackers performance using direct and indirect control methods. International Transactions on Electrical Energy Systems, 30(10), Article e12565. https://doi.org/10.1002/2050-7038.12565

The direct and indirect control methods are commonly used for maximum power point tracker (MPPT) of photovoltaic (PV) systems. Due to the absence of the literature that assess their performance in a comprehensive way, this work attempts to analyze th... Read More about Assessment of maximum power point trackers performance using direct and indirect control methods.

Feasibility Study of Solar Power System in Residential Area (2020)
Journal Article
Abul, S. B., Muhammad, E., Tabassum, M., Muscat, O., Molla, M. E., Ashraf, A., & Ahmed, J. (2020). Feasibility Study of Solar Power System in Residential Area. International Journal of Innovation in Computational Science and Engineering, 1(1), 10-17

The present paper studied the feasibility of solar power system in the residential area in Kuching. Generally, the solar power system described in this paper is defined as a small-scale photovoltaic (PV) based system that can be installed within a ho... Read More about Feasibility Study of Solar Power System in Residential Area.

Review on Comparison of Solar Transport Vehicle with Full Electric Vehicle (2020)
Journal Article
Tabassum, M., Kashem, S. B. A., Chowdhury, M., Khandakar, A., Ashraf, A., & Ahmed, J. (2020). Review on Comparison of Solar Transport Vehicle with Full Electric Vehicle. International Journal of Technology, 1(2), 184-201

Nowadays, the earth is facing resources limitation especially fossil fuels. It is essential to make a new study of the renewable source to sustain the demand for energy. The solar car had been recognized to become an alternative way to replace the us... Read More about Review on Comparison of Solar Transport Vehicle with Full Electric Vehicle.

A review of available hybrid renewable energy systems in Malaysia (2020)
Journal Article
Tambi, N. H. M., Afrouzi, H. N., Mehranzamir, K., & Ahmed, J. (2020). A review of available hybrid renewable energy systems in Malaysia. International Journal of Power Electronics and Drive Systems, 11(1), 433-441. https://doi.org/10.11591/ijpeds.v11.i1.pp433-441

The utilization of conventional sources of energy releases harmful pollutants to the environment causing global warming and acid rain. For that reason, it becomes necessary to use a non-depletable, sustainable and eco-friendly renewable energy as a m... Read More about A review of available hybrid renewable energy systems in Malaysia.

A high-performance global maximum power point tracker of PV system for rapidly changing partial shading conditions (2020)
Journal Article
Kermadi, M., Salam, Z., Ahmed, J., & Berkouk, E. M. (2021). A high-performance global maximum power point tracker of PV system for rapidly changing partial shading conditions. IEEE Transactions on Industrial Electronics, 68(3), 2236-2245. https://doi.org/10.1109/TIE.2020.2972456

This article proposes a fast and efficient maximum power point tracker (MPPT) for photovoltaic (PV) systems under rapidly changing partial shading conditions. An intelligent mechanism is adopted to systematically schedule the search for the global ma... Read More about A high-performance global maximum power point tracker of PV system for rapidly changing partial shading conditions.

Simulation and Analysis of Electric Field Distributions in Stator Bar Insulation System with Different Arrangement of Cavities (2020)
Conference Proceeding
Chee, D. T. Y., Mehranzamir, K., Nabipour-Afrouzi, H., Ahmed, J., Malek, Z. A., & Kieh, T. S. (2020). Simulation and Analysis of Electric Field Distributions in Stator Bar Insulation System with Different Arrangement of Cavities. In 2019 International UNIMAS STEM 12th Engineering Conference (EnCon). https://doi.org/10.1109/EnCon.2019.8861258

The underlying cause of the cessation in high voltage machineries can be rooted from the failure in the insulation system due to cavity's discharges originating from the presence of cavities. This paper caters to the study of the electric field distr... Read More about Simulation and Analysis of Electric Field Distributions in Stator Bar Insulation System with Different Arrangement of Cavities.

Optimization Analysis of Hybrid Renewable Energy System Using Homer Software for Rural Electrification in Sarawak (2020)
Conference Proceeding
Hada, N., Nabipour-Afrouzi, H., Kieh, T. S., Mehranzamir, K., Ahmed, J., & Wooi, C. (2020). Optimization Analysis of Hybrid Renewable Energy System Using Homer Software for Rural Electrification in Sarawak. In 2019 International UNIMAS STEM 12th Engineering Conference (EnCon). https://doi.org/10.1109/EnCon.2019.8861260

This research focuses on the design and optimization of a hybrid renewable energy system for the generation of electricity in a rural area in Sarawak, Malaysia. The investigated system consists of the combination of Solar and Biomass energy integrate... Read More about Optimization Analysis of Hybrid Renewable Energy System Using Homer Software for Rural Electrification in Sarawak.

Study of electric field distribution in the high voltage stator bar insulation in presence of different shapes, locations and sizes of cavities (2019)
Conference Proceeding
Chee, D. T. Y., Nabipour-Afrouzi, H., Malek, Z. A., Mehranzamir, K., & Ahmed, J. (2019). Study of electric field distribution in the high voltage stator bar insulation in presence of different shapes, locations and sizes of cavities. In Proceedings of the International Conference of Electrical and Electronic Engineering (ICon3E 2019). https://doi.org/10.1063/1.5133927

The insulation system represents one of the most critical elements in any high voltage equipment, inclusive of any cabling and machineries. 60% of the faults and errors occurred in the insulation system are due to partial discharge occurrence which d... Read More about Study of electric field distribution in the high voltage stator bar insulation in presence of different shapes, locations and sizes of cavities.

Design and implementation of a quadruped amphibious robot using duck feet (2019)
Journal Article
Kashem, S. B. A., Jawed, S., Ahmed, J., & Qidwai, U. (2019). Design and implementation of a quadruped amphibious robot using duck feet. Robotics, 8(3), Article 77. https://doi.org/10.3390/robotics8030077

Roaming complexity in terrains and unexpected environments pose significant difficulties in robotic exploration of an area. In a broader sense, robots have to face two common tasks during exploration, namely, walking on the drylands and swimming thro... Read More about Design and implementation of a quadruped amphibious robot using duck feet.

Modified Series-Parallel Photovoltaic Configuration to Enhance Efficiency under Partial Shading (2019)
Journal Article
Ahmed, J., Nabipour-Afrouzi, H., & Tajuddin, M. F. N. (2019). Modified Series-Parallel Photovoltaic Configuration to Enhance Efficiency under Partial Shading. International Journal of Integrated Engineering, 11(3), 207-215. https://doi.org/10.30880/ijie.+2019.11.03.021

Partial shading is a phenomenon where photovoltaics (PV) array experiences irregular level of irradiances. Such mismatch can cause a significant reduction in power yield. To mitigate the effect of partial shading, PV modules in an array are connected... Read More about Modified Series-Parallel Photovoltaic Configuration to Enhance Efficiency under Partial Shading.

Mitigating the effect of partial shading by triple-tied configuration of PV modules (2018)
Conference Proceeding
Kho, C. T. K., Ahmed, J., Then, Y. L., & Kermadi, M. (2018). Mitigating the effect of partial shading by triple-tied configuration of PV modules. In 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC) (532-537). https://doi.org/10.1109/APPEEC.2018.8566375

Partial shading is the phenomenon, which occurs when PV modules receive irregular irradiance on a PV array. Due to that, shaded PV modules are bypassed by diodes and significant reduction in power is experienced. To counter such problem, PV modules a... Read More about Mitigating the effect of partial shading by triple-tied configuration of PV modules.

Comprehensive Review on Appropriate Sizing and Optimization Technique of Hybrid PV-Wind System (2018)
Conference Proceeding
Nabipour-Afrouzi, H., Yii, S., Ahmad, J., & Tabassum, M. (2018). Comprehensive Review on Appropriate Sizing and Optimization Technique of Hybrid PV-Wind System. In 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC). https://doi.org/10.1109/APPEEC.2018.8566269

The energy consumption is increasing at an alarming rate due to the growth of world population. Hybrid renewable energy system (HRES) is becoming more trending as the sources involved such as wind and solar radiation to generate energy is environment... Read More about Comprehensive Review on Appropriate Sizing and Optimization Technique of Hybrid PV-Wind System.

A Game-Based Approach for Hemiplegia Lower Limb Rehabilitation (2018)
Conference Proceeding
Gian, K. S. M., Then, Y. L., Tay, F. S., Ahmed, J., & Vithanawasam, C. K. (2018). A Game-Based Approach for Hemiplegia Lower Limb Rehabilitation. In 2018 2nd International Conference on BioSignal Analysis, Processing and Systems (ICBAPS) (103-108). https://doi.org/10.1109/ICBAPS.2018.8527417

Hemiplegia is paralysis which occurs on one half of the body. Rehabilitation for hemiplegic patients, in order to prevent muscle degeneration from prolonged under-usage, can be boring as it requires the same movements to be performed repeatedly. This... Read More about A Game-Based Approach for Hemiplegia Lower Limb Rehabilitation.

An effective hybrid maximum power point tracker of photovoltaic arrays for complex partial shading conditions (2018)
Journal Article
Kermadi, M., Salam, Z., Ahmed, J., & Berkouk, E. M. (2019). An effective hybrid maximum power point tracker of photovoltaic arrays for complex partial shading conditions. IEEE Transactions on Industrial Electronics, 66(9), 6990-7000. https://doi.org/10.1109/TIE.2018.2877202

This paper proposes an improved maximum power point tracker (MPPT) for photovoltaic (PV) system. The scheme is a hybrid between the adaptive perturb and observe and particle swarm optimization (PSO). The algorithm incorporates the search-skip-judge (... Read More about An effective hybrid maximum power point tracker of photovoltaic arrays for complex partial shading conditions.

An experimental study of the amphibious robot inspired by biological duck foot (2018)
Conference Proceeding
Kashem, S. B. A., Jawed, S., Ahmed, J., & Iqbal, A. (2018). An experimental study of the amphibious robot inspired by biological duck foot. In 2018 IEEE 12th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG 2018). https://doi.org/10.1109/CPE.2018.8372507

A lot of issues are faced in the exploration due to complexity of terrain and/or unexpected environment, due to which many places are left unmapped. The aim of this project is to design and develop an amphibious robot which uses webbed duck feet desi... Read More about An experimental study of the amphibious robot inspired by biological duck foot.

An enhanced adaptive P&O MPPT for fast and efficient tracking under varying environmental conditions (2018)
Journal Article
Ahmed, J., & Salam, Z. (2018). An enhanced adaptive P&O MPPT for fast and efficient tracking under varying environmental conditions. IEEE Transactions on Sustainable Energy, 9(3), 1487-1496. https://doi.org/10.1109/TSTE.2018.2791968

This paper proposes an enhanced adaptive perturb and observe (EA-P&O) maximum power point tracking (MPPT) algorithm for the photovoltaic system. The objective is to mitigate the limitations of the conventional P&O namely, the steady-state oscillation... Read More about An enhanced adaptive P&O MPPT for fast and efficient tracking under varying environmental conditions.

Tea leaves moisture prediction using one-port monopole sensor (2017)
Conference Proceeding
Ling, J., Then, Y., You, K., Ahmed, J., & Zaidel, D. (2017). Tea leaves moisture prediction using one-port monopole sensor. In 2017 IEEE Asia Pacific Microwave Conference (APMC) (654-657). https://doi.org/10.1109/APMC.2017.8251531

This paper presents the application of using a coaxial monopole sensor for determining and formulating the relationship between the reflection coefficient and the moisture content of tea leaves. A coaxial monopole sensor with operating frequency rang... Read More about Tea leaves moisture prediction using one-port monopole sensor.

A comprehensive review on PV configurations to maximize power under partial shading (2017)
Conference Proceeding
Kho, C. T. K., Ahmed, J., Kashem, S., & Then, Y. L. (2017). A comprehensive review on PV configurations to maximize power under partial shading. In TENCON 2017 - 2017 IEEE Region 10 Conference (763-768). https://doi.org/10.1109/TENCON.2017.8227962

Partial shading is the condition where PV array experiences different level of irradiances on it which results significant reduction in output power. To handle that issue, PV modules are connected in various configurations as reported in the literatu... Read More about A comprehensive review on PV configurations to maximize power under partial shading.

An accurate method for MPPT to detect the partial shading occurrence in a PV system (2017)
Journal Article
Ahmed, J., & Salam, Z. (2017). An accurate method for MPPT to detect the partial shading occurrence in a PV system. IEEE Transactions on Industrial Informatics, 13(5), 2151-2161. https://doi.org/10.1109/TII.2017.2703079

This paper proposes an accurate detection scheme that effectively differentiates the partial shading from the uniform change of irradiance. By doing so, it avoids the unnecessary global peak search which results in a drop of the maximum power point t... Read More about An accurate method for MPPT to detect the partial shading occurrence in a PV system.

A Modified P&O Maximum Power Point Tracking Method with Reduced Steady State Oscillation and Improved Tracking Efficiency (2016)
Journal Article
Ahmed, J., & Salam, Z. (2016). A Modified P&O Maximum Power Point Tracking Method with Reduced Steady State Oscillation and Improved Tracking Efficiency. IEEE Transactions on Sustainable Energy, 7(4), 1506-1515. https://doi.org/10.1109/TSTE.2016.2568043

This paper proposes a method to reduce the steadystate oscillation and to mitigate the probability of losing the tracking direction of the perturb and observed (P&O)-based maximum power point tracking (MPPT) for PV system. The modified scheme retains... Read More about A Modified P&O Maximum Power Point Tracking Method with Reduced Steady State Oscillation and Improved Tracking Efficiency.

Comparative study of software and hardware solutions for partial shading in PV system (2016)
Conference Proceeding
Salam, Z., Ramli, M., & Ahmed, J. (2016). Comparative study of software and hardware solutions for partial shading in PV system. In 2015 IEEE Conference on Energy Conversion (CENCON) (480-485). https://doi.org/10.1109/CENCON.2015.7409592

The energy yield of the PV system is reduced significantly due to partial shading. To mitigate this problem, two approaches, namely the software and hardware solutions are introduced by many researchers. However, no effort thus far has been made to c... Read More about Comparative study of software and hardware solutions for partial shading in PV system.

Partial shading in building integrated PV system: Causes, effects and mitigating techniques (2015)
Journal Article
Salam, Z., Ramli, Z., Ahmed, J., & Amjad, M. (2015). Partial shading in building integrated PV system: Causes, effects and mitigating techniques. International Journal of Power Electronics and Drive Systems, 6(4), 712-722. https://doi.org/10.11591/ijpeds.v6.i4.pp712-722

This paper is aimed to provide a holistic understanding on the issues related to partial shading: its causes, the theoretical and physical reasons behind it, its implications on the BIPV system. Furthermore the possible mitigation techniques using t... Read More about Partial shading in building integrated PV system: Causes, effects and mitigating techniques.

An improved method to predict the position of maximum power point during partial shading for PV arrays (2015)
Journal Article
Ahmed, J., & Salam, Z. (2015). An improved method to predict the position of maximum power point during partial shading for PV arrays. IEEE Transactions on Industrial Informatics, 11(6), 1378-1387. https://doi.org/10.1109/TII.2015.2489579

For a photovoltaic (PV) system, it is widely assumed that the peaks of a partially shaded P-V curve are located at the multiples of 0.8V oc , where V oc is the open-circuit voltage of the PV module. However, this assumption - known as the of 0.8V oc... Read More about An improved method to predict the position of maximum power point during partial shading for PV arrays.

An improved perturb and observe (P&O) maximum power point tracking (MPPT) algorithm for higher efficiency (2015)
Journal Article
Ahmed, J., & Salam, Z. (2015). An improved perturb and observe (P&O) maximum power point tracking (MPPT) algorithm for higher efficiency. Applied Energy, 150, 97-108. https://doi.org/10.1016/j.apenergy.2015.04.006

This paper proposes a method to improve the efficiency of the P&O maximum power point tracker (MPPT) by reducing the steady state oscillation and eliminating the possibility of the algorithm to lose its tracking direction. A dynamic perturbation step... Read More about An improved perturb and observe (P&O) maximum power point tracking (MPPT) algorithm for higher efficiency.

A critical evaluation on maximum power point tracking methods for partial shading in PV systems (2015)
Journal Article
Ahmed, J., & Salam, Z. (2015). A critical evaluation on maximum power point tracking methods for partial shading in PV systems. Renewable and Sustainable Energy Reviews, 47, 933-953. https://doi.org/10.1016/j.rser.2015.03.080

As photovoltaic (PV) system suffers considerable energy loss due to partial shading (PS), various approaches have been proposed to mitigate this problem. Among these, improving the maximum power point tracker (MPPT) algorithm seems to be the most fea... Read More about A critical evaluation on maximum power point tracking methods for partial shading in PV systems.

The application of soft computing techniques to improve the performance of maximum power point tracker for PV system during partial shading (2014)
Conference Proceeding
Salam, Z., & Ahmed, J. (2014). The application of soft computing techniques to improve the performance of maximum power point tracker for PV system during partial shading. In 2014 IEEE 8th International Power Engineering and Optimization Conference (PEOCO2014) (237-242). https://doi.org/10.1109/PEOCO.2014.6814432

Partial shading is a phenomenon, whereby, certain spots of the photovoltaic (PV) array are shaded, while other parts are left uniformly irradiated. It is caused by the shadow that originates from the obstruction of tall building, chimney, tree, telec... Read More about The application of soft computing techniques to improve the performance of maximum power point tracker for PV system during partial shading.

A Maximum Power Point Tracking (MPPT) for PV system using Cuckoo Search with partial shading capability (2014)
Journal Article
Ahmed, J., & Salam, Z. (2014). A Maximum Power Point Tracking (MPPT) for PV system using Cuckoo Search with partial shading capability. Applied Energy, 119, 118-130. https://doi.org/10.1016/j.apenergy.2013.12.062

Objectives This work proposes a Maximum Power Point Tracking (MPPT) for PV system using Cuckoo Search (CS) method. Methods It is acknowledged that CS exhibits several advantages which include fast convergence, higher efficiency using fewer tunin... Read More about A Maximum Power Point Tracking (MPPT) for PV system using Cuckoo Search with partial shading capability.

A soft computing MPPT for PV system based on Cuckoo Search algorithm (2013)
Conference Proceeding
Ahmed, J., & Salam, Z. (2013). A soft computing MPPT for PV system based on Cuckoo Search algorithm. In 4th International Conference on Power Engineering, Energy and Electrical Drives (558-562). https://doi.org/10.1109/PowerEng.2013.6635669

This paper presents a novel approach to determine the maximum power point (MPP) in Photovoltaic (PV) System using the Cuckoo Search (CS) algorithm. In CS, three samples of voltage are generated randomly over the span of the PV voltage. Based on the L... Read More about A soft computing MPPT for PV system based on Cuckoo Search algorithm.

The application of soft computing methods for MPPT of PV system: A technological and status review (2013)
Journal Article
Salam, Z., Ahmed, J., & Merugu, B. S. (2013). The application of soft computing methods for MPPT of PV system: A technological and status review. Applied Energy, 107, 135-148. https://doi.org/10.1016/j.apenergy.2013.02.008

With the availability of powerful and low cost computing power, maximum power point tracking (MPPT) that utilizes soft computing (SC) techniques are attracting substantial interests from the PV communities. Due to their flexibility and ability to han... Read More about The application of soft computing methods for MPPT of PV system: A technological and status review.

Design of a Cost Effective Off-Grid Wind-Diesel Hybrid Power System in an Island of Bangladesh (2011)
Journal Article
Nahid-Al-Masood, Mirza, R., Ahmed, J., Abedin, A. H., Deeba, S., Hafiz, F., …Chowdhury, A. H. (2011). Design of a Cost Effective Off-Grid Wind-Diesel Hybrid Power System in an Island of Bangladesh. International Journal of Electrical and Computer Engineering, 5(12), 312-315

Bangladesh is a developing country with large population. Demand of electrical energy is increasing day by day because of increasing population and industrialization. But due to limited resources, people here are suffering from power crisis problem w... Read More about Design of a Cost Effective Off-Grid Wind-Diesel Hybrid Power System in an Island of Bangladesh.