Open AccessCurrent harmonic elimination method for asymmetric dual three‐phase permanent magnet synchronous motor
Author(s) -
Zhu Yuan,
Gu Weisong,
Lu Ke,
Wu Zhihong,
Guan Jianbin,
Chen Li
Publication year - 2020
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.2020.0175
Subject(s) - control theory (sociology) , controller (irrigation) , harmonic , compensation (psychology) , inverter , pulse width modulation , three phase , nonlinear system , computer science , voltage , engineering , physics , control (management) , electrical engineering , psychology , quantum mechanics , artificial intelligence , psychoanalysis , agronomy , biology
Four‐dimension current control for asymmetric dual three‐phase permanent magnet synchronous motor based on vector space decomposition approach can eliminate the harmonic currents induced by the nonlinear characteristics of inverter. This study proposes a control strategy which uses a combination of the dead‐time compensation scheme and current harmonic elimination algorithm together to eliminate the harmonic currents. The dead‐time compensation is calculated based on the analysis of the non‐linear characteristics of the inverter. Besides, a resonant controller which takes into account the pole correction caused by the discretisation process is employed in harmonic subspace as the feedback current control loop to generate the compensation voltage. In addition the phase lag caused by the pulse width modulation update and inductive load is also considered to ensure the stability of resonant controller. The experimental results demonstrate the superior performance of the proposed scheme.