Open AccessOnline current cut‐off frequency self‐tuning active damping speed controller for permanent magnet synchronous motors
Author(s) -
You Sung Hyun,
Kim KiChan,
Kim SeokKyoon
Publication year - 2021
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/pel2.12212
Subject(s) - control theory (sociology) , controller (irrigation) , steady state (chemistry) , magnet , transient (computer programming) , current loop , electronic speed control , low pass filter , current (fluid) , low frequency , filter (signal processing) , computer science , engineering , control (management) , electrical engineering , chemistry , artificial intelligence , agronomy , computer vision , biology , operating system , telecommunications
This study suggests a dynamic current cut‐off frequency‐based pole‐zero cancellation speed controller for permanent magnet synchronous motors (PMSMs). The proposed self‐tuning algorithm automatically increases the current cut‐off frequency during only the transient periods and restores it as approaching the steady‐state operation. The outer loop control injects the active damping effect, resulting in a closed‐loop order reduction by pole‐zero cancellation from the particularly structured feedback gain. These two benefits contribute to the following advantages: (a) lowering the steady‐state current cut‐off frequency to improve the relative stability margin and (b) securing the capability of assigning the desired cut‐off frequency to both the inner and outer loops in the first‐order low‐pass filter form. A 500‐W PMSM experimental prototype platform confirms the effectiveness of the proposed controller.