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All Journal INFOKUM Jurnal Info Sains : Informatika dan Sains Jurnal Riset Rumpun Ilmu Teknik (JURRITEK)
Muhamad Vickry Almuhtadi Billah
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Civil Engineering, Building, Construction & Architecture Computer Science & IT

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Perancangan Dan Pembuatan Sistem Pengolahan Data Pasien Pada Klinik Children And Adult Dental Muhamad Vickry Almuhtadi Billah
JURAL RISET RUMPUN ILMU TEKNIK Vol. 2 No. 1 (2023): April : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v2i1.891

Abstract

The dental clinic is a dental and oral health service for adults and children including children with autism and special needs. The concept of 'Children and Adult Dental Clinic' is to provide dental services in a friendly and comfortable manner for dental clinic patients and is efficient in data processing, therefore with the development of data processing systems, its application in dental clinics is also needed, the design and manufacture of patient data processing systems at dental clinics is not new in data processing systems, the application of dental clinic patient data processing systems is made based on the needs of the dental clinic 'Children and Adult Dental Clinic', whose data processing is still processed manually, this dental clinic patient data processing system application is made using SQL Server 2012 database, Visual Studio 2012 and Crystal Reports 2013, making this dental clinic patient data processing application is not easy, book sources are trusted and source from int ernet is a guide in making dental clinic patient data processing system applications, we hope this application can be applied and used as a computer-based data processing system in the dental clinic 'Children and Adult Dental Clinic'.
Impact of Stator Resistance Unbalance on the Efficiency and Torque of Three-Phase Induction Motor Muhamad Vickry Almuhtadi Billah; Siti Anisah; Parlin Siagian
INFOKUM Vol. 14 No. 03 (2026): Infokum, May - June 2026
Publisher : Sean Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/infokum.v14i03.3090

Abstract

Three-phase induction motors are key components in industrial power systems, but their performance is susceptible to internal disturbances such as stator resistance imbalance caused by aging, overheating, or manufacturing defects. This study aims to systematically analyze the impact of stator resistance imbalance on the efficiency and torque characteristics of squirrel cage rotor induction motors using equivalent circuit-based mathematical modeling. Unlike previous studies that used external resistors, this study modifies the stator resistance parameters directly in the model to represent more realistic internal degradation. Simulations were performed on a 3.73 kW, 400 V, 50 Hz motor with resistance imbalance variations from 0% to 20%. The results show that the imbalance causes uneven current distribution and an increase in stator copper losses of up to 5.94% at 20% conditions, although the percentage of current imbalance remains below 1%. As a result, the efficiency decreases linearly from 92.97% to 92.62%, while the mechanical torque experiences a small decrease from 95.88 Nm to 95.28 Nm. This phenomenon also has the potential to increase torque ripple and uneven heating. This study demonstrates that stator resistance imbalance, even small ones, has a significant impact on motor performance and lifespan, and therefore needs to be considered in predictive maintenance strategies and energy efficiency optimization.
Impact of Stator Resistance Unbalance on the Efficiency and Torque of Three-Phase Induction Motor Muhamad Vickry Almuhtadi Billah; Siti Anisah; Parlin Siagian
Jurnal Info Sains : Informatika dan Sains Vol. 16 No. 02 (2026): Info sains, 2026
Publisher : SEAN Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Three-phase induction motors are the main components in industrial power systems; However, their performance is vulnerable to internal disturbances such as stator resistance imbalance caused by aging, overheating, or manufacturing defects. This study aims to regularly analyze the impact of stator resistance imbalance on the efficiency and torque characteristics of a squirrel-cage induction motor using mathematical modeling based on an equivalent circuit. Unlike previous studies that employed external resistors, this research directly modifies the stator resistance parameters in the model to represent more realistic internal degradation. Simulations were conducted on a 3.73 kW, 400 V, 50 Hz motor with stator resistance imbalance variations ranging from 0% to 20%. The results show that the imbalance causes uneven current distribution and an increase in stator copper losses of up to 5.94% at the 20% imbalance condition, although the current imbalance percentage remains below 1%. As a result, the efficiency decreases linearly from 92.97% to 92.62%, while the mechanical torque experiences a slight reduction from 95.88 Nm to 95.28 Nm. This phenomenon also has the potential to increase torque ripple and uneven heating. The study demonstrates that even small stator resistance imbalances have a significant impact on motor performance and lifespan, and therefore should be considered in predictive maintenance strategies and energy efficiency optimization.
Co-Authors Parlin Siagian Siti Anisah