All Outputs (57)

Optimal DC link voltage stabilisation technique for a grid-connected PV system (2024)
Presentation / Conference Contribution
Khan, T., Kahwash, F., Ahmed, J., & Goh, K. (2024, September). Optimal DC link voltage stabilisation technique for a grid-connected PV system. Paper presented at ECCE Europe 2024, Darmstadt, Germany

The utilisation of renewable energy (RES) powered microgrids has seen significant growth due to environmental concerns. These RES resources are often integrated with the grid through a DC link. Maintaining the DC link voltage at a specified level is... Read More about Optimal DC link voltage stabilisation technique for a grid-connected PV system.

Analysis of a Novel Solar Concentrator for Building Integrated Photovoltaic Application (2024)
Presentation / Conference Contribution
Kumar, A. K., Muhammad-Sukki, F., Abu-Bakar, S. H., Bani, N. A., Mas'ud, A. A., Ahmed, J., Ahmad, N., & Wan-Mohtar, W. A. A. Q. I. (2024, July). Analysis of a Novel Solar Concentrator for Building Integrated Photovoltaic Application. Presented at 2024 IEEE Symposium on Industrial Electronics & Applications (ISIEA), Kuala Lumpur, Malaysia

This research work focuses on developing a novel solar concentrator – a rectangular-based rotationally asymmetrical compound parabolic concentrator (RRACPC) design. This design is unique in its rectangular exit aperture, entrance aperture, and half-a... Read More about Analysis of a Novel Solar Concentrator for Building Integrated Photovoltaic Application.

Photovoltaic-powered vehicles: Current trends and future prospects (2024)
Book Chapter
Ahmed, J. (2024). Photovoltaic-powered vehicles: Current trends and future prospects. In S. Sundaram, V. Subramaniam, R. P. Raffaelle, M. Khaja Nazeeruddin, A. Morales-Acevedo, M. Bernechea Navarro, & A. F. Hepp (Eds.), Photovoltaics Beyond Silicon: Innovative Materials, Sustainable Processing Technologies, and Novel Device Structures (647-674). Elsevier. https://doi.org/10.1016/B978-0-323-90188-8.00019-1

To reduce the use of fossil fuels and their associated environmental impact, renewable energy sources are now part of the energy landscape. Photovoltaic(s) (PV) systems and technologies are increasingly seen as a viable option to produce energy eithe... Read More about Photovoltaic-powered vehicles: Current trends and future prospects.

Analyzing meteorological parameters using Pearson correlation coefficient and implementing machine learning models for solar energy prediction in Kuching, Sarawak (2024)
Journal Article
Tan, G., Afrouzi, H. N., Ahmed, J., Hassan, A., & Sukki, F. M. (2024). Analyzing meteorological parameters using Pearson correlation coefficient and implementing machine learning models for solar energy prediction in Kuching, Sarawak. Future Sustainability, 2(2), 20-26. https://doi.org/10.55670/fpll.fusus.2.2.3

Solar energy is one of the clean renewable energy sources that can offset the rising consumption of fossil fuels. However, the meteorological parameters, such as solar irradiance, ambient and solar module temperatures, relative humidity, etc., consta... Read More about Analyzing meteorological parameters using Pearson correlation coefficient and implementing machine learning models for solar energy prediction in Kuching, Sarawak.

Implementation and Comparative Assessment of MPPT Techniques in MPC Based Grid-connected PV System (2023)
Presentation / Conference Contribution
Ahmed, J., Bana, P. R., & Amin, M. (2023, July). Implementation and Comparative Assessment of MPPT Techniques in MPC Based Grid-connected PV System. Presented at IEEE EUROCON 2023-20th International Conference on Smart Technologies, Torino, Italy

Due to low conversion losses single-stage conversion process for grid-connected PV systems is getting popular. In recent literature, model predictive control (MPC) is introduced in single-stage PV conversion process since it provides better dynamic r... Read More about Implementation and Comparative Assessment of MPPT Techniques in MPC Based Grid-connected PV System.

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., Babu, T. S., Ghazali, N. H., Chakraborty, C., & 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.-L., 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., Maruf, M. H., Mansur, A. A., & 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., Beiranvand Pour, A., Rezania, S., & 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., Tabassum, M., & 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.-L., & 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.-S. Wang, W. Cao, & S.-B. 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., Babu, T. S., & 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.

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.