KARAKTERISTIK GENERATOR SINKRON YANG BERBEBAN BERAT DAN TIDAK KONSTAN

Authors

  • Perawati Perawati Program Studi Teknik Elektro Fakultas Teknik Universitas PGRI Palembang

DOI:

https://doi.org/10.31851/ampere.v2i2.1775

Keywords:

synchronous generator, drop voltage, welding head

Abstract


ABSTRAK

Generator sinkron umumnya mempunyai beban yang konstan, tetapi ada saatnya, generator tersebut memikul beban yang tidak konstan atau berubah – ubah, misalnya ketika mengelas. Besar beban generator akan tergantung pada kontak antara elektroda las dan beban. Ketika generator berbeban (beban pengelasan) tegangan yang diukur lebih kecil daripada tegangan yang dibangkitkan, hal itu terjadi karena adanya  jatuh tegangan di saluran, elektroda dan beban. Pada saat itu kecepatan rotorpun akan berkurang, karena arus beban akan memberikan gaya yang arahnya berlawanan dengan arah putaran prime mover. Dari hasil perhitungan dapat diketahui bahwa tegangan kerja mengalami penurunan untuk elektroda 2,6 mm dari 30 V menjadi 11 V dan untuk elektroda 3,2 mm dari 30 V menjadi 9 V. Hal ini disebabkan adanya arus yang diserap beban dan menyebabkan jatuh tegangan. Saat generator berbeban (beban pengelasan) tegangan yang diukur lebih kecil daripada tegangan yang dibangkitkan, karena adanya  jatuh tegangan di saluran, elektroda dan beban.

Kata kunci : generator sinkron, jatuh tegangan, kepala las


Synchronous generator usually has a constant load, but sometimes the load is changed, for example when it is welding. The magnitude of load generator will depend on welding between electrode and load contact. When the generator has welding load, the measured voltage is smaller than generated voltage, it happens because of drop voltage on line, electrode and load. At the same time, the rotor speed will decrease, because the load current will give opposite force with the direction of the prime mover . From the result of calculation, the working voltage decrease for 2,6 mm electrode from 30 V to 11 V and for 3,2 mm electrode from 30 V to 9 V. It is caused by the current absorbed by load and will  drop the voltage. When generator is loaded, the voltage is measured lower than the generated voltage because the voltage is dropped on the line, electrode and load.

Keywords : synchronous generator, drop voltage, welding head

 

 

References

Eugene C. Lister, “Mesin dan Rangkaian Listrik”, Penerbit Erlangga, Jakarta, 1988

Zuhal,”Dasar Teknik Tenaga Listrik dan Elektronika Daya”, PT Gramedia, Jakarta, 1990

mercubuana.ac.id/files/.../2100601_ELektronika%20&%20TTL_Modul_013.docx

repository.usu.ac.id/bitstream/123456789/20111/3/Chapter%20II.pdf

wahyukr.staff.gunadarma.ac.id/Downloads/.../5+TEORI+GENERATOR+SINKRON.p...

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Published

2020-01-14

How to Cite

Perawati, P. (2020). KARAKTERISTIK GENERATOR SINKRON YANG BERBEBAN BERAT DAN TIDAK KONSTAN. Jurnal Ampere, 2(2), 115–120. https://doi.org/10.31851/ampere.v2i2.1775

Issue

Vol. 2 No. 2 (2017): JURNAL AMPERE

Section

Articles

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