METODE SIX STEP COMUTATION PADA PERANCANGAN RANGKAIAN KENDALI SENSORED MOTOR BRUSHLESS DIRECT CURRENT

RENDY ADITYA W P, Eka Firmansyah, S.T., M.Eng., Ph.D.

2013 | Skripsi | TEKNIK ELEKTRO

Motor brushless direct current semakin luas digunakan seiring dengan perkembangan teknologi di bidang automotive, aerospace, medical, industri, dan instrumentasi. Informasi tentang posisi rotor diperlukan dalam pengendalian motor brushless direct current. Posisi rotor dideteksi dengan sensor hall-effect yang terpasang pada stator. Umumnya terdapat tiga buah sensor yang terpisah sejauh 600 mengelilingi bagian stator. Pada penelitian ini dilakukan perancangan dan pengujian inverter tiga fase dengan metode sensored menggunakan sensor hall-effect sebagai penentu posisi rotor untuk mengendalikan motor brushless direct current. Topologi inverter full-bridge diaplikasikan dengan MOSFET kanal N IRFZ44. Rangkaian pengendali motor brushless direct current diuji dan dianalisis unjuk kerjanya. Hasil pengujian menunjukkan pengaruh kenaikan duty-cycle terhadap kecepatan motor. Makin besar nilai duty-cycle yang diatur maka makin besar pula kecepatan motor.

Brushless direct current (BLDC) motor has been widely used in many applications as well as automotive, aerospace, medical, industry, and instrumentation. Rotor position has to be known to drive BLDC motor. Rotor position was detected by hall sensor those are mounted in the stator. Commonly, there are 3 hall-effect sensors that separated by 60 0 each other. In this research, design and testing of a 3-phase inverter using hall-effect sensor to control brushless direct current motor is conducted. Full-bridge topology was used with MOSFET IRFZ44 as switch. Pulse width modulation was controlled by 16-bit microcontroller dsPIC30F4012. The results showed that BLDC motor can be driven well. The increase of duty-cycle is proportional to the speed of motor.

Kata Kunci : motor brushless direct current, sensor hall-effect, inverter tiga fase, topologi full-bridge.