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All Journal MSI Transaction on Education Mechanical Engineering for Society and Industry Automotive Experiences
Padrigalan, Kathleen Ebora
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Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Optimal design of stator slot with semi-closed type to maximize magnetic flux connection and reduce iron leakage in high-speed spindle drives Purwanto, Wawan; Mulani, Firoj; krismadinata, Krismadinata; Maksum, Hasan; Arif, Ahmad; Putra, Dwi Sudarno; Padrigalan, Kathleen Ebora
Mechanical Engineering for Society and Industry Vol 4 No 1 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.10492

Abstract

A novel approach was devised to optimize the stator slot semi-closed type in order improve the magnetic flux connection and minimize iron leakage in high-speed spindle drives. The concept was executed through a combination of response surface approach including the technique of finite element analysis. The primary objective of this investigation would be to provide an engineering approach which improves the functionality of stator criteria, including the stator slot geometry, coil turn per slot, and wire size. The purpose is to achieve higher flux connection and minimize iron leakage. This study presents an enhanced analytical approach that incorporates the analysis of stator flux connection, finite element calculation of flux connection, and iron leakage analysis of stator variables. The results are analyzed through the utilization of finite element computation, and their accuracy is verified through experimental measurements. The findings suggest the ideal design yields increased magnetic flux connection and reduced iron leakage in comparison to the industrial layout. The precision provided by the suggested model is confirmed through the comparison of the simulation and experimental information. In general, the percentage of errors is estimated to be around 7%.
Exploration of Engine Parameters for Emission Reduction in Gasoline-Ethanol Fueled Engines Purwanto, Wawan; Maksum, Hasan; Arif, Ahmad; Rochman, Muhammad Latifur; Sujito, Sujito; Padrigalan, Kathleen Ebora
Automotive Experiences Vol 7 No 3 (2024)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.12467

Abstract

The main objective of this study is to develop spark ignition engine parameters that allow complete combustion while reducing dependence on fossil fuels. To achieve this goal, optimization of compression ratio, gasoline-ethanol mixture, ignition timing, and spark plug type was used. In addition, this study used water injection that continuously injects water before the intake manifold. In this study, the Taguchi method with the L9 orthogonal array was applied. According to the experimental verification results, the best combination to reduce exhaust emission levels is to utilize gasoline-ethanol (E70), a compression ratio (CR) of 15.6:1, an ignition degree of +4°, and a platinum spark plug. Meanwhile, the presence of water injection at 1.45 ml/s helps reduce vehicle exhaust pollutants.
Rancang Bangun Kendali Konverter Empat Kuadran untuk Motor DC dengan Interface GUI Matlab Fitri, Dahlia Hidul; Krismadinata; Padrigalan, Kathleen Ebora
MSI Transaction on Education Vol 5 No 3 (2024): MSI Transaction on Education
Publisher : Minangkabau Scholar Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/mted.v5i3.154

Abstract

Motor listrik, khususnya motor DC, mempunyai peran penting dalam proses produksi industri untuk mencapai hasil optimal. Motor DC digunakan dalam berbagai aplikasi industri seperti conveyor, elevator, dan peralatan tekstil karena kemudahan pengaplikasian dan skala pengaturan kecepatan yang lebih lebar dibandingkan motor arus bolak-balik. Namun, penurunan kecepatan akibat beban sering menjadi masalah sehingga diperlukan sistem pengendalian, seperti kendali konverter empat kuadran (DC chopper), untuk mengatur arah putaran dan pengereman serta kecepatan motor DC. DC chopper mengubah tegangan DC menjadi tegangan DC variabel yang dapat dikendalikan, dan DC chopper empat kuadran memungkinkan kontrol tegangan motor DC pada empat daerah (positif atau negatif). Dalam penelitian ini, DC chopper digunakan untuk mengendalikan tegangan motor DC yang diintegrasikan dengan interface GUI Matlab untuk monitoring sistem. GUI Matlab dapat pengoperasian alat menggunakan komputer tanpa perlu mengaktifkan saklar manual, sehingga proyek ini dapat dijalankan dengan dua metode. Pada penelitian ini, pengujian sistem kendali konverter empat kuadran untuk motor DC dilakukan dengan interface GUI Matlab. Electric motors, especially DC motors, play an important role in industrial production processes to achieve optimal results. DC motors are used in various industrial applications such as conveyors, elevators, and textile equipment due to their ease of application and wider speed regulation scale compared to alternating current motors. However, speed degradation due to load is often a problem so a control system, such as a four-quadrant converter control (DC chopper), is needed to regulate the rotation and braking direction and speed of DC motors. A DC chopper converts a DC voltage into a controllable variable DC voltage, and a four-quadrant DC chopper allows control of the DC motor voltage in four regions (positive or negative). In this research, a DC chopper is used to control the DC motor voltage integrated with a Matlab GUI interface for system monitoring. The Matlab GUI allows operation of the device using a computer without the need to activate a manual switch, so this project can be run using two methods. In this research, testing of the four-quadrant converter control system for DC motors was conducted with the Matlab GUI interface.
Co-Authors Ahmad Arif Dwi Sudarno Putra Fitri, Dahlia Hidul Hasan Maksum Krismadinata Krismadinata, Krismadinata Muhammad Latifur Rochman Mulani, Firoj Purwanto, Wawan Sujito Sujito