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All Journal Proceeding of the Electrical Engineering Computer Science and Informatics Proceeding of the Electrical Engineering Computer Science and Informatics Manutech : Jurnal Teknologi Manufaktur
Hery Tri Waloyo
Universitas Muhammadiyah Kalimantan Timur
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Brushless Direct Current Electric Motor Design with Minimum Cogging Torque Nizam, Muhammad; Tri Waloyo, Hery; ., Inayati
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 1: EECSI 2014
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (836.831 KB) | DOI: 10.11591/eecsi.v1.342

Abstract

Cogging torque is one of the factors that influence electric motor efficiency. Many methods have been used to reduce the cogging torque. One of the methods is the determination of the number of slots and poles fraction. This study was intended to determine the number of slots and poles fraction to get a minimum of cogging torque. Research was done by ANSYS software. By varying the number of slots and poles, the data cogging torque and torque ripple were observed. It was found that the lesser difference between the number of slots and poles produced lower cogging torque. More numbers of slots would reduce the cogging torque. The smallest cogging torque was produced at difference in the number of slots and poles of 1 and 2. For slots more than four, the cogging torque produced were irregular.
Brushless Direct Current Electric Motor Design with Minimum Cogging Torque Muhammad Nizam; Hery Tri Waloyo; Inayati .
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 1: EECSI 2014
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (836.831 KB) | DOI: 10.11591/eecsi.v1.342

Abstract

Cogging torque is one of the factors that influence electric motor efficiency. Many methods have been used to reduce the cogging torque. One of the methods is the determination of the number of slots and poles fraction. This study was intended to determine the number of slots and poles fraction to get a minimum of cogging torque. Research was done by ANSYS software. By varying the number of slots and poles, the data cogging torque and torque ripple were observed. It was found that the lesser difference between the number of slots and poles produced lower cogging torque. More numbers of slots would reduce the cogging torque. The smallest cogging torque was produced at difference in the number of slots and poles of 1 and 2. For slots more than four, the cogging torque produced were irregular.
Studi Kelayakan Serat Tandan Kosong Kelapa Sawit Sebagai Penguat Komposit Untuk Aplikasi Lambung Kapal Agus Mujianto; Hery Tri Waloyo
Manutech : Jurnal Teknologi Manufaktur Vol. 15 No. 01 (2023): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/manutech.v15i01.270

Abstract

The Republic of Indonesia is an archipelagic country, making ships an important means of transportation for inter-island crossings. Currently, ship hull construction still relies on fiberglass, which is not environmentally friendly. On the other hand, Indonesia is one of the world's largest producers of palm oil, leading to a significant amount of empty palm fruit bunches (EPFB) waste. If not utilized, this waste can cause environmental pollution. However, OPEFB fibers are now being used as a substitute for fiberglass in composite materials. Given the high demand for ships in Indonesia and the abundant supply of OPEFB fibers, research is needed to explore the potential of using OPEFB fibers as reinforcements in composites for ship hull construction. This study aims to investigate whether palm fruit bunch fibers can replace fiberglass in the shipbuilding industry. To determine the feasibility, the composite materials reinforced with EFB fibers need to be characterized. The properties to be examined in this research are the tensile strength and bending strength of the OPEFB fiber-reinforced composites with variations in fiber volume fraction and fiber length. The studied volume fractions are 20%, 30%, and 40%, while the fiber lengths are 4 cm, 6 cm, and 8 cm. The results show that the optimum volume fraction is 30% with tensile strength and bending strength of 12.35 MPa and 47.7 MPa, respectively. As for the fiber length, the best result is achieved with 8 cm length, yielding tensile and bending strengths of 13.3 MPa and 40.89 MPa, respectively. However, both tensile and bending strengths are still significantly below the minimum values required by the Indonesian Classification Bureau (BKI). Therefore, OPEFB fiber-reinforced composites are not suitable for ship hull construction.
Co-Authors ., Inayati Agus Mujianto Inayati . Muhammad Nizam Nizam, Muhammad