Premium
Novel modulation technique to reduce acoustic noise and switching loss
Author(s) -
Ayano Hideki,
Kitada Masayoshi,
Iguchi Yuki,
Matsui Yoshihiro,
Itoh Junichi
Publication year - 2021
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.23305
Subject(s) - modulation (music) , noise (video) , acoustics , electronic engineering , materials science , electrical engineering , computer science , physics , engineering , artificial intelligence , image (mathematics)
This paper proposes a novel modulation technique that reduces both motor acoustic noise and switching loss. The conventional discontinuous PWM method can reduce the switching loss to a greater extent compared to the conventional three‐phase modulation method; however, the acoustic noise of the motor increases. The proposed technique adjusts the zero‐sequence voltage given to the voltage references in such a way that the discontinuous part of the conventional discontinuous PWM method is changed smoothly. The switching loss with the proposed technique can be reduced to 58% of that with the conventional three‐phase modulation method. The experimental results show that the acoustic noise can be reduced to a greater extent with the proposed technique compared to that with the conventional discontinuous PWM method.