Open AccessTorque ripple and switching frequency reduction of interior permanent magnet brushless direct current motors using a novel control technique
Author(s) -
Faiz Jawad,
Heidari Mehdi,
Sharafi Hussein
Publication year - 2019
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.2018.6303
Subject(s) - torque ripple , direct torque control , magnet , torque , dc motor , control theory (sociology) , reduction (mathematics) , ripple , direct current , torque motor , switching frequency , materials science , automotive engineering , computer science , engineering , control (management) , electrical engineering , physics , induction motor , voltage , mathematics , artificial intelligence , thermodynamics , geometry
Although interior permanent magnet brushless direct current (IPMBLDC) motors have higher torque and power density compared to surface‐mounted PMBLDC motors, the reluctance torque of IPMBLDC motors generates higher torque ripples. This study introduces a new current waveform as a reference to control the IPM motors while keeping the total developed torque constant. It also helps to considerably reduce the torque ripple of the motors. The experimental results show that this method significantly reduces the damaging impact of the reluctance torque ripple without complicating computations or changing the stator and rotor structures of the motor. Additionally, the switching frequency and consequently switching losses are reduced using the proposed technique.