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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Indonesian Journal of Electrical Engineering and Computer Science
Karim, Kasrul Abdul
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Control & Systems Engineering Electrical & Electronics Engineering

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Determination of performance characteristics using FEA-analytical for outer rotor BLDC motor Kamaroszaman, Saharudin; Othman, Raja Nor Firdaus Kashfi Raja; Karim, Kasrul Abdul; Ahmad, Suhairi Rizuan Che; Tashiro, Kunihisa
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 14, No 4: December 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v14.i4.pp2010-2020

Abstract

This paper presents an analytical approach to determine the performance characteristics of an outer rotor Brushless DC (BLDC) motor using finite element analysis (FEA). An accurate performance characteristic is a crucial deliverable during the early motor design process in order to minimize the cost of change while delivering a feasible design to the application. There are several popular methods to determine motor performance, including template-based software as well as FEA. However, these two methods have limitations in terms of geometry and time. Therefore, this paper proposes that the limitations can be addressed by using a combination of FEA and mathematical equations. First, the optimum motor design is determined using an FEA analytical approach. Second, the torque constant KT, is derived from the FEA results and followed by performance curve generation using the mathematical equation of speed, current, and output power in terms of torque function. Finally, the outcome results are verified against the motor requirements, including an assessment of maximum speed, stall current, and maximum output power. In conclusion, this research introduces a methodology for determining full curve motor performance prior to prototype fabrication. The leverage benefit could be gained through robust design and low-cost development.
Analysis of interior rotor for high-speed brushless DC motor using finite element method Abdullah, Nurfaezah; Karim, Kasrul Abdul; Othman, Raja Nor Firdaus Raja; Jidin, Auzani; Sutikno, Tole
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 14, No 4: December 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v14.i4.pp1919-1928

Abstract

The permanent magnet of brushless DC (BLDC) motor is ideally suited for high-speed application due to its superior performance and efficient as compared to other types of electrical motors. However, to operate in high-speed operation, the rotors that hold the magnet must be able to withstand high centrifugal force. Due to that, the main objective of this project is to design and develop the suitable rotor for high-speed BLDC motor through the finite element method (FEM) Ansys Maxwell modeling software. In addition, this project is also carried out to determine the ability of the modeled software to reach the high-speed performances in terms of cogging torque and induce voltage. In this project, the selected BLDC motor was fabricated and measured experimentally. The result showed that the designed rotor can achieve speed of almost 14,500 rpm.
Improvement of electromagnetic torque of BLDC motor for electrical cutter application Kahar, Muhammad Izanie; Raja Othman, Raja Nor Firdaus Kashfi; Khamis, Aziah; Karim, Kasrul Abdul; Abdul Shukor, Fairul Azhar; Ab Ghani, Ahmad Fuad; Rejab, Rofizal Mat
Indonesian Journal of Electrical Engineering and Computer Science Vol 35, No 3: September 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v35.i3.pp1412-1425

Abstract

As the advancement of brushless direct current (BLDC) motor is rising, it has been an advantage to use the motor for a wide range of applications. Its robustness and torque development have benefited small applications, such as the agriculture cutter. However, dropping performances of conventional BLDC are affected by the shape of the rotor that has unused magnetic flux. Therefore, this research aimed to analyze the electromagnetic torque by reducing the unused flux from an electromagnetic point of view. Two BLDC models with different slot-pole numbers and rotor types were modeled and simulated with equal permanent magnet volume, and magnetomotive force (MMF). Finite element method (FEM) software was used to compute back electromotive force (BEMF), cogging torque, electromagnetic torque, and magnetic flux density of the BLDC models. As a result, 9/8 slot-pole with zero ferromagnetic underneath the permanent magnet had the highest BEMF and torque produced compared to the conventional type, with a percentage difference of 27%. In conclusion, this research presents the motor that had an improvement of electromagnetic torque for electrical cutter application.
Co-Authors Ab Ghani, Ahmad Fuad Abdul Shukor, Fairul Azhar Abdullah, Nurfaezah Ahmad, Suhairi Rizuan Che Auzani Jidin Kahar, Muhammad Izanie Kamaroszaman, Saharudin Khamis, Aziah Othman, Raja Nor Firdaus Kashfi Raja Othman, Raja Nor Firdaus Raja Raja Othman, Raja Nor Firdaus Kashfi Rejab, Rofizal Mat Tashiro, Kunihisa Tole Sutikno