Identifikasi Kerusakan Belitan Motor Induksi dengan Rotor Terpasang Berdasarkan Zero Crossing Point

Fakhruddin, Hanif (2018) Identifikasi Kerusakan Belitan Motor Induksi dengan Rotor Terpasang Berdasarkan Zero Crossing Point. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Salah satu penyebab awal dari kerusakan isolasi belitan adalah adanya arus hubung singkat yang terjadi antar lilitan (turn-to-turn) pada suatu belitan. Arus hubung singkat tersebut akan mencipatakan titik-titik panas yang jika dibiarkan akan menyebabkan kegagalan antar belitan, antar fasa, dan antar belitan dengan ground. Tes surja merupakan tes yang dapat mendeteksi kegagalan isolasi antar turn dengan menggunakan tegangan surja yang diinjeksikan pada belitan stator motor. Pada tugas akhir ini dilakukan pengujian tes surja terhadap motor induksi dengan rotor terpasang dalam keadaan normal, keadaan turn faults, dan penambahan resistor pada salah satu turn fault. Hasil data pengujian tes surja yang diperoleh dianalisis berdasarkan metode zero crossing point. Metode ini melihat titik dimana tegangan surja berubah dari nilai positif ke nilai negatif dan sebaliknya atau saat tegangan surja mencapai tegangan 0V setelah dilepaskan. Nilai zero crossing point saat turn fault dan penambahan resistor dibandingkan dengan nilai zero crossing point saat keadaan normal untuk mengetahui presentase eror yang dihasilkan. Hasil yang diperoleh dari variasi turn fault yaitu semakin besar nilai turn fault yang digunakan presentase eror zero crossing point cenderung semakin besar. Sedangkan hasil yang diperoleh dari variasi resistor yaitu semakin besar resistor yang digunakan, semakin kecil presentase eror zero crossing point. =========================================================================================================== One of the earliest causes of defective insulation winding is the presence of short-circuit current that occurs between turns (turn-to-turn) on a winding. The short-circuited currents will create hot spots which, if left unchecked, will cause failure between winding, between phases and between windings with ground. Surge test is a test that can detect the failure of isolation between turns by using surge voltage injected in the stator motor windings. In this final project, it was conducted surge test to induction motor with rotor insertion in normal condition, turn faults state, and addition of resistor at one of turn fault. The results of test data of surge test obtained were analyzed based on zero crossing point method. This method looks at the point at which the surge voltage changes from a positive value to a negative value and vice versa or when the surge voltage reaches a 0V voltage after it is released. The zero crossing point value at the turn fault and the addition of the resistor is compared with the zero crossing point value during normal circumstances to determine the percentage of errors produced. The results obtained from the turn fault variation are, the greater the value of turn fault used, the error percentage of zero crossing point tend to be greater. While the results obtained from the variation of the resistor are, the greater the value of resistor used, the smaller error percentage of zero crossing point produced.

Item Type: Thesis (Undergraduate)
Additional Information: RSE 621.313 6 Fak i-1 621.313 6 Fak i-1
Uncontrolled Keywords: isolasi pada motor induksi, turn-to-turn faults, tes surja dengan rotor terpasang, zero crossing point.isolation of induction motor, turn-to-turn faults, surge test with ttached rotor, zero crossing point
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3401 Insulation and insulating materials
Divisions: Faculty of Electrical Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User: Hanif Fakhruddin
Date Deposited: 03 Dec 2018 05:19
Last Modified: 01 Oct 2020 03:51
URI: http://repository.its.ac.id/id/eprint/52877

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