Open AccessReducing root‐mean‐square current stress on the DC link capacitor of a five‐phase electric drive through multiple carrier pulse‐width modulation technique
Author(s) -
Diana Michela,
Maqsood Atif,
Corzine Keith,
Guglielmi Paolo,
Parsa Leila
Publication year - 2019
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2019.0181
Subject(s) - pulse width modulation , root mean square , stress (linguistics) , phase (matter) , control theory (sociology) , modulation (music) , current (fluid) , capacitor , square root , link (geometry) , three phase , pulse (music) , square (algebra) , focus (optics) , materials science , mechanics , physics , electrical engineering , mathematics , voltage , engineering , computer science , acoustics , optics , control (management) , geometry , philosophy , quantum mechanics , artificial intelligence , combinatorics , linguistics
This study investigates the angle of phase shift between interleaved carriers in pulse‐width modulation, as an additional design parameter to reduce the DC link stress of a five‐phase drive. Several phase shift strategies are studied and defined with a focus on the DC link root‐mean‐square current. The effect of adjusting the phase shift between interleaved carriers on the DC link stress is analysed and a general mathematical model is proposed to estimate the effect for any phase shift strategy. The trends predicted by simulations and analytical models have been validated through the application of the control algorithm on a five‐phase motor drive system.