All Outputs (53)

Development of biomass-fueled cogeneration systems for off-grid electrification (2020)
Presentation / Conference Contribution
Bagherian, M. A., Mehranzamir, K., Ahmed, J., Nafea, M., Nabipour-Afrouzi, H., & Wooi, C. (2020, September). Development of biomass-fueled cogeneration systems for off-grid electrification. Presented at 2020 2nd International Conference on Smart Power & Internet Energy Systems (SPIES), Bangkok, Thailand

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.

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). 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.

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.

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)
Presentation / Conference Contribution
Chee, D. T. Y., Mehranzamir, K., Nabipour-Afrouzi, H., Ahmed, J., Malek, Z. A., & Kieh, T. S. (2019, August). Simulation and Analysis of Electric Field Distributions in Stator Bar Insulation System with Different Arrangement of Cavities. Presented at 2019 International UNIMAS STEM 12th Engineering Conference (EnCon), Kuching, Malaysia

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)
Presentation / Conference Contribution
Hada, N., Nabipour-Afrouzi, H., Kieh, T. S., Mehranzamir, K., Ahmed, J., & Wooi, C. (2019, August). Optimization Analysis of Hybrid Renewable Energy System Using Homer Software for Rural Electrification in Sarawak. Presented at 2019 International UNIMAS STEM 12th Engineering Conference (EnCon), Kuching, Malaysia

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)
Presentation / Conference Contribution
Chee, D. T. Y., Nabipour-Afrouzi, H., Malek, Z. A., Mehranzamir, K., & Ahmed, J. (2019, June). Study of electric field distribution in the high voltage stator bar insulation in presence of different shapes, locations and sizes of cavities. Presented at International Conference of Electrical and Electronic Engineering (ICon3E 2019), Putrajaya, Malaysia

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.

Comprehensive Review on Appropriate Sizing and Optimization Technique of Hybrid PV-Wind System (2018)
Presentation / Conference Contribution
Nabipour-Afrouzi, H., Yii, S., Ahmad, J., & Tabassum, M. (2018, October). Comprehensive Review on Appropriate Sizing and Optimization Technique of Hybrid PV-Wind System. Presented at 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), Kota Kinabalu, Malaysia

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.

Mitigating the effect of partial shading by triple-tied configuration of PV modules (2018)
Presentation / Conference Contribution
Kho, C. T. K., Ahmed, J., Then, Y. L., & Kermadi, M. (2018, October). Mitigating the effect of partial shading by triple-tied configuration of PV modules. Presented at 2018 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), Kota Kinabalu, Malaysia

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.

A Game-Based Approach for Hemiplegia Lower Limb Rehabilitation (2018)
Presentation / Conference Contribution
Gian, K. S. M., Then, Y. L., Tay, F. S., Ahmed, J., & Vithanawasam, C. K. (2018, July). A Game-Based Approach for Hemiplegia Lower Limb Rehabilitation. Presented at 2018 2nd International Conference on BioSignal Analysis, Processing and Systems (ICBAPS), Kuching, Malaysia

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)
Presentation / Conference Contribution
Kashem, S. B. A., Jawed, S., Ahmed, J., & Iqbal, A. (2018, April). An experimental study of the amphibious robot inspired by biological duck foot. Presented at 2018 IEEE 12th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG 2018), Doha, Qatar

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)
Presentation / Conference Contribution
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.