Analisis Medan Elektromagnetik pada Kaki Transformator Tiga Fasa Asimetris dengan Finite-Element Method

Rega, Muhammad Sulthon Novera (2018) Analisis Medan Elektromagnetik pada Kaki Transformator Tiga Fasa Asimetris dengan Finite-Element Method. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Studi ini meneliti pengaruh ketebalan laminasi inti pada transformator tiga fasa asimetris terhadap kurva histerisis. Transformator tiga fasa asimetris adalah transformator yang memiliki ukuran kaki yang berbeda dengan topologi inti transformator yang diteliti menggunakan cara potong E-I berkapasitas daya 5-kVA serta ukuran kaki tengah yang lebih besar dibandingkan kaki pada sisi samping transformator. Penelitian pengaruh ketebalan laminasi inti transformator dilakukan menggunakan metode elemen hingga atau finite-element method (FEM) untuk mengetahui distribusi kerapatan medan magnet (B) dan intensitas medan magnet (H) pada titik-titik yang dilalui aliran distribusi fluks. Variasi ketebalan inti transformator yang digunakan pada penelitian adalah inti transformator utuh atau tanpa laminasi, inti transformator berlaminasi 2,5 cm, dan inti transformator berlaminasi 0,03 cm. Pada masing-masing transformator terdapat 39 titik monitor untuk mendapatkan nilai maksimal B dan H. Berdasarkan hasil simulasi, nilai kerapatan medan magnet terbesar berada di titik transformator dengan laminasi 0,03 cm, yaitu sebesar 2,174 V.s/m2 dan kerapatan medan magnet dengan rerata absolut tertinggi berada pada transformator dengan inti tanpa laminasi, yaitu sebesar 1,837 V.s/m2. Titik percabangan potongan inti transformator dengan ketebalan laminasi 0,03 cm memiliki nilai intensitas medan magnet tertinggi dibanding transformator tanpa laminasi dan laminasi 2,5 cm. ================ This research deals with the effect of core lamination thickness on asymmetric three-phase transformer to hysteresis curve. The asymmetric three-phase transformer is a transformer that has different leg-length. The used transformer in this research has 5-kVA rating, and E-I core-cutting topology, and a larger leg size on center compared to the the side-legs of the transformer. Research on the effect of transformer core lamination thickness was done using finite-element method (FEM) to find out the magnetic field density (B) distribution and magnetic field intensity (H) at some points which the flux distribution flows. Variables of thicknesses used in the study were either intact or non-laminated-core transformer, 2.5 cm-laminated transformer core, and 0.03 cm-laminated transformer core. Each transformer has 39 monitor points to obtain the maximum value of B and H. Based on the simulation results, the highest magnetic field density value is in the transformer with 0.03 cm-laminated core, which is 2.174 Vs/m2 and the magnetic field density with the highest absolute average is in a transformer with a non-laminated-core, which is 1.837 Vs/m2. At the branching point of the core-cutting of the transformer with 0.03 cm-laminated transformer core have the highest magnetic field intensity value compared to the non-laminated-core transformer and 2.5 cm-laminated.

Item Type: Thesis (Undergraduate)
Additional Information: RSE 621.314 Reg a-1
Uncontrolled Keywords: finite-element method, kerapatan medan magnet, kurva histerisis, intensitas medan magnet, transformator tiga fasa, finite-element method, magnetic field density, hysteresis curve, magnetic field intensity, three-phase transformer
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7872 Electromagnetic Devices
Divisions: Faculty of Electrical Technology > Electrical Engineering > (S1) Undergraduate Theses
Depositing User: Rega Muhammad Sulthon Novera
Date Deposited: 07 Nov 2018 07:24
Last Modified: 07 Nov 2018 07:24
URI: http://repository.its.ac.id/id/eprint/52855

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