Open AccessHybrid converter topology for reducing torque ripple of BLDC motor
Author(s) -
Viswanathan Vaiyapuri,
Jeevananthan Seenithangom
Publication year - 2017
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2015.0905
Subject(s) - torque ripple , control theory (sociology) , ripple , switched reluctance motor , inverter , topology (electrical circuits) , computer science , motor drive , direct torque control , voltage , engineering , electrical engineering , induction motor , rotor (electric) , mechanical engineering , control (management) , artificial intelligence
This study investigates the torque ripple performance of brushless DC (BLDC) motor drive system by integrating both modified single‐ended primary inductor converter (SEPIC) and silicon carbide metal–oxide–semiconductor field‐effect transistor based three‐level neutral‐point‐clamped (NPC) inverter. In BLDC motor, the high commutation torque ripple is an important origin of vibration, speed ripple and prevents the use of the BLDC motor drive system in high‐performance and high‐precision applications. For torque ripple reduction, the modified SEPIC converter is employed at the entrance of the three‐level NPC inverter, which regulates the DC‐link voltage according to the motor speed. Moreover, the three‐level NPC inverter is employed as a second‐stage converter to suppress current ripple for further torque ripple reduction. Finally, the performance of the proposed hybrid converter topology is verified by simulation and laboratory experimental results.