Open AccessSynchronous‐frame decoupling current regulators for induction motor control in high‐power drive systems: modelling and design
Author(s) -
MonNzongo Daniel Legrand,
IpoumNgome Paul Gistain,
Flesch Rodolfo C.C.,
SongManguelle Joseph,
Jin Tao,
Tang Jinquan
Publication year - 2020
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.2019.0222
Subject(s) - decoupling (probability) , control theory (sociology) , inverter , computer science , induction motor , reference frame , operating point , torque , bandwidth (computing) , control engineering , engineering , frame (networking) , electronic engineering , control (management) , voltage , physics , telecommunications , computer network , electrical engineering , artificial intelligence , thermodynamics
In this study, a decoupling current regulator with a simple design approach aiming to mitigate cross‐coupling effects during torque or speed disturbance is proposed for induction motor (IM) drives that operate at the low switching frequency. The proposed control method consists to derive a decoupling transfer matrix from the plant accurate model that is inserted at the output of the current controller, while traditional methods consider the feedback synchronous currents or their errors to calculate the compensation terms. The proposed method allows the controlled system to be equivalent to a dual single‐input–single‐output system without cross‐coupling terms. The performances of this method have been validated through simulations and experiments on a 3‐kW IM powered by a 3‐level neutral‐point clamped inverter at different operating conditions. The results show that the proposed decoupling approach provides additional bandwidth frequency than traditional approaches from literature. This characteristic translates into fast response time and improved decoupling dynamics at various operating conditions.