Pengembangan Vibration-Based Condition Monitoring Sistem Penggerak Flywheel Generator

Sholihin, Riyadhus (2026) Pengembangan Vibration-Based Condition Monitoring Sistem Penggerak Flywheel Generator. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem penggerak pada flywheel generator berpotensi mengalami gangguan operasional akibat getaran mekanis berlebih yang tidak terdeteksi secara dini. Getaran tersebut dapat dipicu oleh ketidakseimbangan, ketidaksejajaran poros, maupun degradasi komponen, yang secara langsung berdampak pada efisiensi dan umur operasional mesin. Sistem flywheel generator yang ada belum dilengkapi pemantauan kondisi real-time yang mampu mengidentifikasi gejala awal kerusakan. Penelitian ini bertujuan merancang sistem pemantauan getaran berbasis PLC untuk mendeteksi tingkat keparahan getaran, mengklasifikasikan kondisi operasional berdasarkan ISO 20816, serta memberikan alarm peringatan dini pada flywheel generator. Metode penelitian menggunakan pendekatan eksperimen kuantitatif. Sensor velocity SE920 dipasang secara radial (vertikal) untuk mengukur kecepatan getaran dalam satuan mm/s. Sinyal analog 4–20 mA diproses oleh PLC Siemens S7-1200 melalui modul SM1231 untuk menghitung parameter RMS, peak, dan crest factor, kemudian ditampilkan secara real-time pada HMI Haiwell B7H. Pengujian dilakukan dengan memvariasikan frekuensi motor (10–50 Hz) serta beban mekanis (0 kW, 0.75 kW, 3 kW, dan 3.75 kW) untuk mengamati pengaruh torsi dan kecepatan putar terhadap respon getaran. Hasil pengujian menunjukkan bahwa peningkatan frekuensi merupakan faktor dominan yang meningkatkan tingkat getaran dibandingkan peningkatan beban. Pada frekuensi rendah (10–20 Hz), seluruh kombinasi beban berada pada Zona A–B yang menandakan kondisi aman. Pada frekuensi 30 Hz muncul indikasi resonansi parsial dengan nilai RMS mencapai 8–9 mm/s, masuk Zona C–D. Pada frekuensi tinggi (40–50 Hz), sebagian besar kondisi beban menunjukkan getaran tinggi yang tidak disarankan untuk operasi jangka panjang. Parameter crest factor berada pada kisaran 0.7–1.9 yang menandakan tidak adanya spike impulsif ekstrem.
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The drive system of the flywheel generator is potentially susceptible to operational disturbances caused by excessive mechanical vibrations that are not detected early. These vibrations may be triggered by imbalance, shaft misalignment, or component degradation, all of which directly affect the machine’s efficiency and operational lifespan. The existing flywheel generator system is not yet equipped with real-time condition monitoring capable of identifying early signs of failure. This research aims to design a PLC-based vibration monitoring system to detect vibration severity, classify operational conditions according to ISO 20816, and provide early warning alarms for the flywheel generator. The study employs a quantitative experimental approach. An SE920 velocity sensor is installed radially (vertically) to measure vibration velocity in mm/s. The 4–20 mA analog signal is processed by a Siemens S7-1200 PLC through the SM1231 module to calculate RMS, peak, and crest factor parameters, which are then displayed in real-time on a Haiwell B7H HMI. Testing was conducted by varying the motor frequency (10–50 Hz) and mechanical load (0 kW, 0.75 kW, 3 kW, and 3.75 kW) to observe the influence of torque and rotational speed on vibration response. The results show that increasing frequency is the dominant factor that elevates vibration levels compared to increasing load. At low frequencies (10–20 Hz), all load combinations fall within Zones A–B, indicating safe operating conditions. At 30 Hz, partial resonance appears, with RMS values reaching 8–9 mm/s, corresponding to Zones C–D. At higher frequencies (40–50 Hz), most load conditions exhibit high vibration levels that are not recommended for long-term operation. The crest factor parameter ranges from 0.7 to 1.9, indicating the absence of extreme impulsive spikes.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Monitoring Getaran, Flywheel Generator, ISO 20816, PLC. ===== Vibration Monitoring, Flywheel Generator, ISO 20816, PLC.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA169.5 Failure analysis T Technology > TA Engineering (General). Civil engineering (General) > TA355 Vibration. 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 > TJ174 Maintenance and repair of machinery 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:	Riyadhus Sholihin
Date Deposited:	31 Jul 2026 06:39
Last Modified:	31 Jul 2026 06:39
URI:	http://repository.its.ac.id/id/eprint/140549

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