Shukor, Fairul Azhar Abdul
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Electrical motors in the lift systems: a review Nasir, Nur Ashikin Mohd; Shukor, Fairul Azhar Abdul; Abdullah, Norrimah; Othman, Raja Nor Firdaus Kashfi Raja
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.pp1379-1386

Abstract

This paper discussed a few type linear motors for lift systems applications. First, a few types of lift systems are generally presented. Based on these types of lift systems, the common actuators used to operate the lifts are compared and analyzed. Basically, in traditional lift systems, rotational motors are commonly employed as actuators. However, to achieve simpler lift systems, linear motors are utilized instead of rotational motors in direct drive systems. There are three types of linear motors usually being adopted which are linear induction motors (LIM), permanent magnets linear synchronous motors (PMLSM) and switched-reluctance linear synchronous motors (SRLSM). LIM exhibits a simple structure but relatively have low performance, while the SRLSM demonstrates a similar simplicity yet delivering improved performance compared to the LIM. On the other hand, the PMLSM, despite its high-performance capabilities, suffers from notable cogging.
Modelling and analysis of linear DC motor with constant thrust characteristics Othman, Raja Nor Firdaus Kashfi Raja; Isa, Siti Zulaika Mat; Zuki, Nor Aishah Md.; Ahmad, Suhairi Rizuan Che; Shukor, Fairul Azhar Abdul; Othman, Md. Nazri
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 4: December 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i4.pp2212-2223

Abstract

This paper introduces a portable and user-friendly innovation in food processing by replacing traditional molding methods with a linear DC motor (LDM). Traditional methods, which involve manual pressing, are energy-intensive and time-consuming, reducing productivity. The proposed LDM offers a simple, cost-effective, and robust solution capable of producing constant thrust, unlike conventional LDMs that require complex and expensive control methods and are limited to short displacements. The research focuses on modelling and analyzing an LDM with constant thrust characteristics for food processing applications. The primary objective is to model the thrust using the permeance analysis method (PAM), ensuring constant thrust capability. Verification was conducted using the finite element method (FEM) and measurement results, showing a percentage difference of 1.7% and 6.5%, respectively, between PAM and the other methods. The study provides valuable guidance for designing LDMs with constant thrust capabilities, enhancing the efficiency and practicality of food processing devices.
Comparative analysis of various rotor types BLDC motor for residential elevator application Zuki, Nor Aishah Md.; Othman, Raja Nor Firdaus Kashfi Raja; Shukor, Fairul Azhar Abdul; Tashiro, Kunihisa
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 4: December 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i4.pp2224-2233

Abstract

Brushless DC (BLDC) motors are widely used in applications where high efficiency is crucial. With advancements in permanent magnet technology, BLDC motors are increasingly suitable for high-torque applications such as residential elevators. Known for their high efficiency, low maintenance, and excellent controllability, BLDC motors are ideal candidates for this research. However, the challenge lies in identifying the most efficient rotor structure that can deliver the required torque for residential elevator applications while maintaining cost-effectiveness and compact design. This paper addresses this problem by simulating various rotor types of BLDC motors using the finite element method (FEM), Ansys Maxwell. four different rotor structures have been analyzed to evaluate their back electromotive force (EMF) and torque. The model generating the highest torque will be selected for manufacturing as a motor for residential elevators. Among the models studied, BLDC-ERA rotor structures produced the highest torque of 28 Nm, while BLDC-HR type generates the lowest torque. To ensure practicality and cost-effectiveness of installing elevators in double-story houses or smaller residences, the selected motor must be compact and affordable, enabling senior citizen to maintain their independence. This research not only aids other researchers in designing suitable motors for elevator applications but also contributes to societal well-being by promoting accessibility and independence for the elderly.