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Refinement of inverter model considering dead‐time for performance improvement in predictive instantaneous current control
Author(s) -
Imura Akihiro,
Takahashi Tomoya,
Fujitsuna Masami,
Zanma Tadanao,
Doki Shinji
Publication year - 2014
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.21939
Subject(s) - inverter , dead time , model predictive control , computer science , control theory (sociology) , current (fluid) , control (management) , grid tie inverter , dead zone , control engineering , engineering , voltage , artificial intelligence , electrical engineering , mathematics , maximum power point tracking , statistics , oceanography , geology
Model predictive instantaneous‐current control (MPIC), which was proposed in our earlier works, enables us to achieve better instantaneous current control using mathematical models of an inverter and permanent magnet synchronous motors (PMSMs). However, dead‐time to avoid short breakdown in the inverter is not usually considered in a general inverter model. Such an unmodeled part in the inverter model prevents accurate prediction of current evolution in motor systems based on the model predictive control. Therefore, in this paper, we analyze current response resulting from the dead‐time in the MPIC, and propose a refined inverter model considering the dead‐time so that control performance is improved. The effectiveness of the proposed method is verified through simulation and experiments. © 2013 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.