Thermomechanical Analysis On Eletric Motor Using Finite Element Methods

Ashad, Masagung (2025) Thermomechanical Analysis On Eletric Motor Using Finite Element Methods. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

This study utilizes the Finite Element Method (FEM) to analyze the thermomechanical performance of 1 kW and 10 kW Brushless DC (BLDC) motors. Through 3D modeling and simulations, the research evaluates how design modifications impact heat distribution, thermal stress, and component deformation. The results consistently show that the windings are the primary heat source. This heat is conducted to the stator, making it the hottest stationary component, before dissipating through the motor's casing. The analysis confirms that design changes significantly affect performance. For the 1 kW motor, an optimized design lowered the maximum temperature from 47.36°C to 45.34°C and reduced peak stress from 390.4 MPa to 328.8 MPa. Similarly, for the 10 kW motor, an improved variation decreased the average operating temperature from 70.53°C to 59.31°C and lowered the maximum casing stress from 256.2 MPa to 197.4 MPa. The highest stress and deformation were consistently observed in the stator and casing. This research validates that optimizing the cooling system design directly correlates with lower operating temperatures and reduced thermomechanical stress, which is crucial for improving the overall reliability and efficiency of electric motors.
=============================================================== Studi ini menggunakan Finite Element Method (FEM) untuk menganalisis kinerja termomekanis motor Brushless DC (BLDC) 1 kW dan 10 kW. Melalui pemodelan dan simulasi 3D, penelitian mengevaluasi bagaimana modifikasi desain memengaruhi distribusi panas, tekanan termal, dan deformasi komponen. Hasil secara konsisten menunjukkan bahwa belitan adalah sumber panas utama. Panas ini dialirkan ke stator, menjadikannya komponen stasioner terpanas, sebelum menghilang melalui casing motor. Analisis menegaskan bahwa perubahan desain secara signifikan memengaruhi kinerja. Untuk motor 1 kW, desain yang dioptimalkan menurunkan suhu maksimum dari 47,36 °C menjadi 45,34 °C dan mengurangi tegangan puncak dari 390,4 MPa menjadi 328,8 MPa. Demikian pula, untuk motor 10 kW, variasi yang ditingkatkan menurunkan suhu pengoperasian rata-rata dari 70,53°C menjadi 59,31°C dan menurunkan tegangan casing maksimum dari 256,2 MPa menjadi 197,4 MPa. Tegangan dan deformasi tertinggi secara konsisten diamati di stator dan casing. Penelitian ini memvalidasi bahwa mengoptimalkan desain sistem pendingin secara langsung berkorelasi dengan suhu pengoperasian yang lebih rendah dan pengurangan tekanan termomekanis, yang sangat penting untuk meningkatkan keandalan dan efisiensi motor listrik secara keseluruhan

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Finite Element Method, Heat Distribution, Thermal Stress, Thermomechanical, Distribusi Panas, Metode Elemen Hingga, Stres Termal, Termomekanis
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK4055 Electric motor V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Masagung Ashad
Date Deposited:	04 Aug 2025 06:19
Last Modified:	04 Aug 2025 06:19
URI:	http://repository.its.ac.id/id/eprint/125734

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