Sistem Monitoring Temperature Real-Time pada Motor Induksi AC 3 Phase untuk Aplikasi Sistem Flywheel Generator

Nafiliyah, Fadiah Arika (2026) Sistem Monitoring Temperature Real-Time pada Motor Induksi AC 3 Phase untuk Aplikasi Sistem Flywheel Generator. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem monitoring Temperature real-time dirancang untuk memantau kondisi termal motor induksi AC 3 Phase yang berfungsi sebagai penggerak utama pada aplikasi flywheel generator. Motor induksi memiliki peran krusial dalam menjaga kontinuitas suplai energi mekanik, sehingga kestabilan Temperature menjadi faktor penting dalam menjamin keandalan dan keselamatan operasional sistem. Sistem ini menggunakan sensor RTD PT100 Magnetic yang dipasang pada permukaan motor untuk memperoleh pembacaan Temperature yang akurat dan responsif. Data hasil pengukuran diproses oleh PLC Siemens S7-1200 dan ditampilkan secara real-time melalui Human Machine Interface (HMI), sehingga operator dapat memantau kondisi motor secara cepat dan terintegrasi. Pengujian dilakukan pada variasi frekuensi 10–50 Hz dengan empat kondisi pembebanan, yaitu tanpa beban, 0,75 kW, 3 kW, dan 3,75 kW, selama enam jam untuk menganalisis respons termal motor secara menyeluruh. Hasil pengujian menunjukkan bahwa frekuensi operasi merupakan faktor paling berpengaruh terhadap kenaikan Temperature. Pada frekuensi rendah (10–20 Hz), Temperature meningkat signifikan akibat slip motor yang tinggi serta efektivitas pendinginan yang rendah. Kondisi paling kritis terjadi pada frekuensi 10 Hz dengan beban 3,75 kW, di mana Temperature mendekati batas overheating sehingga pengujian dihentikan lebih awal. Sebaliknya, pada frekuensi mendekati nominal (40–50 Hz), motor menunjukkan performa termal paling stabil dengan Temperature yang tetap berada dalam batas aman pada seluruh variasi beban. Dari sisi performa monitoring, sistem mampu melakukan akuisisi dan visualisasi data Temperature secara kontinu dan real-time serta mengklasifikasikan kondisi motor ke dalam kategori normal, waspada, dan bahaya berdasarkan ambang batas Temperature. Dari sisi performa pengukuran, sensor RTD PT100 Magnetic menunjukkan akurasi yang tinggi dan konsisten, dengan akurasi 99% pada beban 0,75 kW dan tanpa beban, 98,7% pada beban 3 kW, serta 98,8% pada beban 3,75 kW. Hasil ini membuktikan bahwa sistem monitoring yang dikembangkan andal untuk meningkatkan keselamatan dan keandalan operasional flywheel generator.
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A real-time Temperature monitoring system was developed to observe the thermal condition of a three-phase AC induction motor used as the main drive in a flywheel generator application. The induction motor plays a critical role in maintaining continuous mechanical energy supply; therefore, Temperature stability is a key factor in ensuring system reliability and operational safety. The system employs a magnetic RTD PT100 sensor mounted on the motor surface to obtain accurate and responsive Temperature measurements. The acquired data are processed by a Siemens S7-1200 PLC and displayed in real time via a Human–Machine Interface (HMI), enabling fast, integrated, and user-friendly condition monitoring by operators. Experimental tests were conducted at operating frequencies ranging from 10 to 50 Hz under four load conditions: no load, 0.75 kW, 3 kW, and 3.75 kW, over a six-hour period to comprehensively analyze the motor’s thermal response. The results indicate that operating frequency is the most influential factor affecting Temperature rise. At low frequencies (10–20 Hz), Temperature increases significantly due to high motor slip and reduced cooling effectiveness. The most critical condition occurred at 10 Hz with a 3.75 kW load, where the Temperature approached the overheating limit, requiring early termination of the test. In contrast, at near-nominal frequencies (40–50 Hz), the motor exhibited the most stable thermal performance, with Temperatures remaining within safe limits across all load variations. In terms of monitoring performance, the system successfully performs continuous, real-time data acquisition and visualization while classifying motor conditions into normal, warning, and danger categories based on predefined Temperature thresholds. Regarding measurement performance, the RTD PT100 Magnetic sensor demonstrated high and consistent accuracy: 99% accuracy at 0.75 kW and no-load conditions, 98.7% at 3 kW, and 98.8% at 3.75 kW. These results confirm that the developed monitoring system is reliable and effective in enhancing the safety and operational reliability of flywheel generator systems.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Flywheel Generator, Motor Induksi 3 Phase, RTD PT100, Monitoring Temperature, PLC Siemens S7-1200, Flywheel Generator, 3-Phase Induction Motor, RTD PT100, Temperature Monitoring, PLC Siemens S7-1200.
Subjects:	T Technology > T Technology (General) T Technology > T Technology (General) > T55 Industrial Safety T Technology > TA Engineering (General). Civil engineering (General) > TA1573 Detectors. Sensors T Technology > TJ Mechanical engineering and machinery > TJ1058 Rotors T Technology > TJ Mechanical engineering and machinery > TJ165 Energy storage. T Technology > TJ Mechanical engineering and machinery > TJ223.P76 Programmable controllers T Technology > TJ Mechanical engineering and machinery > TJ541 Flywheels.
Divisions:	Faculty of Vocational > Instrumentation Engineering
Depositing User:	Fadiah Arika Nafiliyah
Date Deposited:	29 Jul 2026 01:45
Last Modified:	29 Jul 2026 01:45
URI:	http://repository.its.ac.id/id/eprint/139238

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