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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) JOIV : International Journal on Informatics Visualization
Baharom, Rahimi
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering

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Advancements in electrical systems for E-bike battery charging: a technical examination of conventional and wireless power transfer technologies Bunyamin, Wan Muhamad Hakimi Wan; Baharom, Rahimi; Munim, Wan Noraishah Wan Abdul; Zolkiffly, Mohd Zaid; Ahmad, Ahmad Sukri
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 3: September 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i3.pp1617-1632

Abstract

Electric bicycles (E-bikes) are becoming key to making transportation more eco-friendly, leading to cleaner air, and lower carbon emissions. The rising popularity of E-bikes calls for innovative battery charging solutions that cater to their specific needs, emphasizing faster charging, high energy efficiency, safety, compact design, smart features, and compliance with international standards. This paper reviews existing and new charging technologies for E-bikes, focusing on their design, charging processes, and safety features. It points out the issues with traditional chargers, such as their negative effects on power quality and grid stability, and introduces wireless power transfer (WPT) as a groundbreaking approach to E-bike charging. WPT enhances convenience by removing the need for physical cables and is seen as a step forward with the integration of power factor correction techniques for better efficiency and energy use. The discussion extends to the future of E-bike charging, exploring emerging technologies that could redefine electric transportation. The study aims to deepen the understanding of E-bike battery charging technologies, their challenges, and future directions, contributing to the advancement of E-bike technology.
Optimizing wireless power transfer efficiency: an empirical analysis of switching frequency variations Baharom, Rahimi; Hayat, Muhammad Amirul Ashraf Zarrul
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 3: September 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i3.pp1633-1640

Abstract

This study explores the impact of switching frequency variations on wireless power transfer (WPT) system efficiency through rigorous experimental analysis. Our tests reveal that lower switching frequencies can enhance system efficiency by up to 30% by reducing resistive losses. These findings establish an optimal frequency range that significantly improves performance. The research integrates empirical data with theoretical models to elucidate electromagnetic principles like the skin effect and its impact on frequency-dependent behaviors. This comprehensive approach not only confirms the experimental methodology but also provides robust numerical evidence, making a novel contribution to the field. The results have significant implications for renewable energy and sustainable technology development, suggesting practical applications in designing energy efficient WPT systems for consumer electronics and electric vehicle charging. This paper quantitatively defines the efficiency benefits of specific frequency ranges, advancing the deployment of wireless power technologies.
Computer simulation of open-circuit fault-tolerant boost rectifier based on SPMC Hayroman, Muhammad Hakiem; Baharom, Rahimi; Abdul Munim, Wan Noraishah Wan; Muhammad, Khairul Safuan
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 2: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i2.pp1031-1044

Abstract

This paper presents a computer simulation of an open-circuit fault-tolerant boost rectifier based on a single-phase matrix converter using MATLAB/ Simulink. The proposed converter employs a fault identification technique to identify the faulty switch by generating a binary code extracted from the output voltage, magnitude of inductor current, and cycle of the input power supply. Upon identifying the faulty switch, the current is redirected to any available path through operational switches by controlling the switching devices. The aim is to ensure uninterrupted power supply from the source to the load. The paper includes a detailed analysis of the fault identification technique and the options for rerouting the current path. The outcomes of this paper are simulated using MATLAB/Simulink.
Development of multi-input multi-output converter for decarbonization energy system Baharom, Rahimi; Ghazali, Mohd Shukri Mohd
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 1: March 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i1.pp271-280

Abstract

Decarbonization energy systems include a range of renewable energy sources, such as solar, wind, hydro, and geothermal. These sources generate electricity with minimal carbon emissions and can be used in various applications, including power generation, heating, and transportation. Therefore, the use of a multi-input multi-output (MIMO) converter is becoming increasingly important in decarbonization energy systems. This is because the integration of multiple renewable energy sources, requires a power converter that can manage multiple inputs and outputs efficiently. This paper presents the development of a MIMO converter using a single-phase matrix converter for decarbonization energy systems. The proposed converter is capable of integrating multiple renewable energy sources and can be used in a microgrid application, thus removing the need of multiple converters. The design and analysis of the converter are presented, including the selection of power switches and control strategy. The performance of the converter is evaluated through experimental results, demonstrating its effectiveness in managing multiple inputs and outputs using a single power converter circuit. The results indicate that the proposed converter is a promising solution for decarbonization energy systems, contributing to the development of sustainable energy systems.
Enhancing power quality: An Adaline algorithm for direct resonance current extraction in shunt active power filter Rahman, Nor Farahaida Abdul; Zainuri, Muhammad Ammirrul Atiqi Mohd; Hannoon, Naeem M. S.; Hidayat, Muhamad Nabil; Baharom, Rahimi; Munim, Wan Noraishah Wan Abdul
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 4: December 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i4.pp2470-2479

Abstract

This paper presents an adaptive linear neuron (Adaline) algorithm designed to extract resonance current from the supply current directly. It aims to reduce the computation burden while upholding efficacy in the extraction process. The approach involves establishing the primary power system, evaluating harmonic and resonance current impacts, formulating efficient extraction strategies based on current waveform characteristics, employing the Adaline algorithm for extraction, and constructing a single-phase shunt active power filter (SAPF) to address harmonic currents and parallel resonance effects. Comparative analysis demonstrates the Adaline algorithm’s precision in extracting current amplitudes pre- and post-SAPF implementation. However, observed disparities in extracted resonance current amplitude may stem from the algorithm’s limitations in capturing low-amplitude signals. While a gain adjustment effectively boosts amplitude. However, it introduces considerable ripple and inconsistency, likely linked to parallel resonance effects. Notably, the SAPF exhibits simultaneous harmonic compensation and resonance damping capabilities. Results affirm the SAPF’s effectiveness in reducing harmonic components across all frequencies, including resonance frequency. Furthermore, resonance damping is crucial for further improving SAPF performance and reducing resonance current. This results in significantly improved waveform quality and reduced total harmonic distortion (THD) and individual harmonic distortion (THDi) values of compensated supply current.
Enhancing power quality in wireless DC power supplies through active power filtering: A computer simulation approach Baharom, Rahimi; Bunyamin, Wan Muhamad Hakimi Wan
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 4: December 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i4.pp2376-2387

Abstract

This paper presents a computer simulation model for a high-power factor wireless DC power supply system, integrating an active power filter (APF) at the rectifier stage on the transmitter side using a rectifier boost technique. The APF, employing a MOSFET switch regulated by active pulse width modulation (APWM) within a current control loop, addresses pulsating and distorted AC supply currents caused by non-linear loads. A robust closed-loop control mechanism, including a subtractor circuit, proportional-integral (PI) controller, and comparator, ensures the generation of a continuous sinusoidal waveform synchronized with the supply voltage. The model utilizes a high-frequency inverter to convert DC to AC, which is then wirelessly transmitted via wireless power transfer (WPT) technology and converted back to DC by a high-frequency rectifier. MATLAB/Simulink simulation results show a significant reduction in total harmonic distortion (THD) of the AC supply current, complying with IEEE 519 standards. Selected results are presented to verify the proposed method's effectiveness in reducing harmonic distortions and enhancing power quality. This study highlights the advantages of WPT in scenarios where traditional wired connections are impractical and underscores the potential of this system for real-world applications, particularly in developing high-power factor wireless DC power supply systems.
Enhancing engineering education in electric drive systems through integrated computer simulation modules Baharom, Rahimi; Hashim, Norazlan; Hannoon, Naeem M. S.; Rahman, Nor Farahaida Abdul
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 1: March 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i1.pp45-54

Abstract

The integration of computer simulation modules in electric drive courses plays a pivotal role in modern engineering education by offering students hands-on experience and fostering a deeper understanding of theoretical concepts. This study highlights the significance of enhancing engineering education through an innovative simulation module designed to analyze electric drive systems. The module enables the specification of suitable converters and machines for speed and position control systems while focusing on the steady-state operations of AC and DC drives. Through simulation exercises, students explore converter circuit topologies, control strategies, and the two-quadrant operations of electric machines using fully controlled two-pulse bridge circuits, encompassing motoring and braking modes in the first and fourth quadrants. The proposed module demonstrates its effectiveness in bridging theory and practice, evidenced by significant improvements in students' comprehension of circuit configurations and control algorithms. The approach enhances critical thinking, problem-solving skills, and the ability to relate theoretical knowledge to practical applications. Future research will focus on extending the module's capabilities to incorporate additional quadrants of operation and advanced control strategies. By integrating such tools into the curriculum, educators can better prepare students for the evolving demands of engineering careers.
Post-fault voltage limit assessment for six-phase induction machines: a synchronous and slip frequency approach Muhammad Zin, Nooradzianie; Wan Abdul Munim, Wan Noraishah; Abidin, Ahmad Farid; Che, Hang Seng; Mohamad Elias, Mohamad Fathi; Baharom, Rahimi
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 1: March 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i1.pp162-174

Abstract

Six-phase machine research has attracted a lot of attention lately, as seen by the large number of articles and case studies that have been written about it. Six-phase induction machines are prevalent due to their simplicity in construction. A fault-tolerance system is essential to guaranteeing machine operation that is both available and continuous in the event of a disruption or failure in the system. The operational topologies of dual three-phase (D3-IM) and symmetrical six-phase (S6-IM) induction machines were studied in this research. One open-phase fault (1OPF) is covered in the study, and different scenarios including the derating factor, neutral configuration, and maximum torque (MT) operational strategy are taken into account. Using MATLAB software, machine characteristics, machine equations, and Clarke's transformation show the fault-tolerant capability of each type of machine. Moreover, a MATLAB program is developed to assess post-fault voltage control limits, allowing for a comparison between current and voltage control limits. Simulated graph results depicting line-to-line voltages against synchronous and slip frequencies across all possible fault scenarios reveal distinct fault-tolerant capabilities between the two machine types. The comparative study shows that S6-IM offers better fault-tolerant capability than D3-IM based on both various synchronous and slip frequency approaches.
Optimization of resonant capacitance values for high-efficiency uninterruptible wireless power transfer system using CST software Rawi, Muhammad Shawwal Mohamad; Baharom, Rahimi
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 1: March 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i1.pp335-343

Abstract

This paper introduces an innovative methodology for optimizing resonant capacitance values (Cp and Cs) to enhance the efficiency of uninterruptible wireless power transfer (UWPT) systems, utilizing advanced computer simulation technology (CST) software. Precise tuning of resonant capacitance is critical for achieving optimal frequency matching, which directly influences system performance. The study focuses on three coil configuration strategies: standard coil configuration, coil integrated with ferrite, and coil enclosed within a casing and ferrite. These configurations were analyzed to identify the optimal capacitance values, resulting in significant efficiency improvements. Through comprehensive CST simulations, the capacitance values of Cp1, Cp2, and Cs were optimized to 140.8 nF, 105.6 nF, and 145.5 nF, respectively, achieving a remarkable power transfer efficiency of 99.61% in the casing and ferrite configuration. The proposed optimization methodology consistently achieved efficiencies exceeding 90% between the transmitter and receiver coils. Beyond simulation results, this research highlights the potential for real-world applications and underscores the importance of precise parameter optimization in advancing high-efficiency wireless power transfer systems. Future studies will aim to validate the findings experimentally and explore broader applications of the proposed system.
Simulation and verification of improved particle swarm optimization for maximum power point tracking in photovoltaic systems under dynamic environmental conditions Mohd Jamhari, Muhammad Khairul Azman; Hashim, Norazlan; Baharom, Rahimi; Othman, Muhammad Murtadha
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 1: March 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i1.pp608-621

Abstract

This paper introduces an improved particle swarm optimization (iPSO) algorithm designed for maximum power point tracking (MPPT) in photovoltaic (PV) systems. The proposed algorithm incorporates a novel reinitialization mechanism that dynamically detects and adapts to environmental changes. Additionally, an exponentially decreasing inertia weight is utilized to balance exploration and exploitation, ensuring rapid convergence to the global maximum power point (GMPP). A deterministic initialization strategy is employed to uniformly distribute particles across the search space, thereby increasing the likelihood of identifying the GMPP. The iPSO algorithm is thoroughly evaluated using a MATLAB/Simulink simulation and validated with real-time hardware, including a boost DC-DC converter, dSPACE, and a Chroma PV simulator. Comparative analysis with conventional PSO and PSO-reinit algorithms under various irradiance patterns demonstrates that the iPSO consistently outperforms in terms of convergence speed and MPPT efficiency. The study highlights the robustness of the iPSO algorithm in bridging theoretical models with practical applications.
Co-Authors Abdul Munim, Wan Noraishah Wan Abidin, Ahmad Farid Adzhar Mahmood, Mohd Khairil Ahmad, Ahmad Sukri Bunyamin, Wan Muhamad Hakimi Wan Che, Hang Seng Farhan Nasarudin, Muhammad Nazrin Ghazali, Mohd Shukri Mohd Hannoon, Naeem M. S. Hashim, Norazlan Hayat, Muhammad Amirul Ashraf Zarrul Hayroman, Muhammad Hakiem Hidayat, Muhamad Nabil Megat Syahirul Amin Megat Ali Mohamad Elias, Mohamad Fathi Mohd Jamhari, Muhammad Khairul Azman Muhamad, Samshul Munir Muhammad, Khairul Safuan Munim, Wan Noraishah Wan Abdul Nooradzianie Muhammad Zin Othman, Muhammad Murtadha Rahman, Nor Farahaida Abdul Rawi, Muhammad Shawwal Mohamad Rizman, Zairi Ismael Saidon, Wan Salha Wan Abdul Munim, Wan Noraishah Yassin, Ihsan Mohd Zainuri, Muhammad Ammirrul Atiqi Mohd Zolkiffly, Mohd Zaid