Ariyani, Fitri (2015) Analisis Gelombang Arus Stator Untuk Membedakan Kerusakan Akibat Hubung Singkat Dan Sumber Tegangan Tak Seimbang Pada Motor Induksi Tiga Fasa. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Motor induksi merupakan mesin listrik yang banyak digunkan pada proses industri. Adanya kerusakan awal pada motor induksi terutama pada belitan stator jika tidak segera dideteksi dapat menimbulkan kerusakan yang lebih parah sehingga motor harus shut down dari proses produksi karena proses perbaikan yang lama.
Pada tugas akhir ini, kerusakan stator yang akan dideteksi adalah hubung singkat pada turn belitan dan suplai tegangan sumber yang tak seimbang. Data arus stator dimonitor secara online dan diubah menjadi sinyal PVM ( Park’s Vector Modulus). Sinyal PVM kemudian diolah menggunakan Discrete Wavelet Transform (DWT). Analisis hasil transformasi wavelet digunakan Power Detail Density (PDD) yang digunakan untuk mendeteksi gangguan stator yang terjadi. Hasil pengujian membuktikan bahwa deteksi menggunakan nilai PDD dari transformasi wavelet mampu mendeteksi perbedaan kondisi saat motor beroperasi normal, mendapat suplai tegangan tak seimbang, dan saat terjadi hubung singkat pada belitan. Hubung singkat belitan dapat dideteksi dari nilai PDD level D1,D2 dan D3 sedangkan kondisi sumber tegangan tak seimbang dideteksi dari nilai PDD level D6, D7 dan D8.
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Induction motor is the most widely used electrical machines in industries. Stator windings faults, if not immediately detected will cause further damage, then motor must be shut down of the production process due to the long maintenance. .
In this final project, there are two stator faults that can be detected, Short circuit in the turn winding and the supply voltage unbalance. Stator current is online monitored and then it converted into a signal PVM (Park's Vector Modulus). Next, PVM signal is processed using the Discrete Wavelet Transform (DWT). Analysis of the results from wavelet transform used Details Power Density (PDD) which is used to detect the stator winding faults. The results prove that the PDD value of detection using wavelet transform is able to detect differences in the conditions when the motor is operating normally, have unbalanced supply voltage, and when there is a short circuit in the windings. Short circuit in the winding can be detected by PDD values at level D1,D2 and D3 while voltage unbalance detected by PDD values at level D6,D7 and D8.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 621.313 6 Ari a |
| Uncontrolled Keywords: | Motor induksi,Kerusakan Stator, Hubung Singkat Belitan, Unbalance,Transformasi Wavelet |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2785 Electric motors, Induction. |
| Divisions: | Faculty of Industrial Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Marsudiyana - |
| Date Deposited: | 17 Dec 2019 08:43 |
| Last Modified: | 17 Dec 2019 08:43 |
| URI: | http://repository.its.ac.id/id/eprint/72405 |
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