Imamudin, Teguh Nur (2016) Implementasi Metode Soft Starting Pada Motor Induksi 3 Fasa. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Motor listrik sebagai penggerak sangat berperan penting dalam
dunia industri. Jenis penggerak yang sering dipakai adalah motor AC
khusunya motor induksi tiga fasa. Motor induksi memiliki beberapa
kelebihan dibandingkan motor jenis yang lain, seperti kontruksinya yang
sangat sederhana, harga dan perawatan yang murah, selain itu tahan
terhadap goncangan.
Namun permasalahan yang pasti pada motor induksi ialah saat
motor diaktifkan secara langsung motor akan menarik arus 5 sampai 7
kali dari arus beban penuhnya dan hanya menghasilkan torsi 1,5 sampai
2,5 kali torsi beban penuh. Arus mula yang besar ini dapat
mengakibatkan drop tegangan pada saluran sehingga akan mengganggu
peralatan lain yang dihubungkan pada satu saluran yang sama. Untuk
motor dengan daya besar tentu arus starting motor juga akan semakin
besar, sehingga untuk motor dengan daya diatas 30 kW atau lebih tidak
dianjurkan menghidupkan secara langsung.
Beberapa metode starting tradisional motor induksi diantaranya
adalah DOL (Direct On Line), Y-Δ, auto-trafo, dan primary resistor,
yang masih menarik arus start yang besar.
Perancangan alat dengan mengimplementasikan metode soft
starting, yang tersusun atas komponen Thyristor (TRIAC) mampu
mengendalikan tegangan dan arus yang masuk kedalam motor secara
bertahap sesuai dengan pengaturan yang diinginkan. Dengan demikian
masalah starting motor induksi tiga fasa dapat diatasi.
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The electric motors as the driving is very important component in
the industrial world. Type of drive that is often used is a AC motors,
especially three phase induction motors. This motor has several
advantages than other types of motor, like a very simple construction,
economic price, cheap maintenance and resistant to shocks.
But the problem in use the induction motors is the large starting
current when the motors active directly,a starting current motors will
draw current 5 until 7 times full load current and only produces a
torque 1.5 to 2.5 times the full load motors torque. The large starting
current can impact io a voltage drop on the voltage line so that it will
interfere with other equipment connected on the same line. For motors
with large power of motor starting currents will also be greater,
resulting in a motor with a power of 30 kW or more is not advisable to
activate directly.
Several methods of starting motors are DOL (Direct On Line)
method, Y-Δ method, auto-transformators and primary resistor method.
But in the application the methods still draws a large starting.
Soft-starting method, which composed from Thyristor (TRIAC), is
expected to control the voltage and current into the motor gradually.
Thus the problem of starting three phase induction motor can be
overcome.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSE 621.313 6 Ima i |
| Uncontrolled Keywords: | Soft starting; thyristor; TRIAC |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Faculty of Industrial Technology > Electrical Engineering > 20201-(S1) Undergraduate Thesis |
| Depositing User: | Anis Wulandari |
| Date Deposited: | 05 Jul 2017 07:28 |
| Last Modified: | 27 Dec 2018 01:50 |
| URI: | http://repository.its.ac.id/id/eprint/41879 |
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