Open AccessSecond‐order lead compensator‐based quadrature PLL for sensorless interior permanent magnet synchronous motor control
Author(s) -
Chen Shuo,
Wu Xiang,
Chen Junlei,
Tan Guojun,
Wang Yifei
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.2019.0822
Subject(s) - control theory (sociology) , phase locked loop , inverter , lead–lag compensator , synchronous motor , computer science , harmonic , quadrature (astronomy) , observer (physics) , permanent magnet synchronous motor , harmonic analysis , voltage , magnet , phase (matter) , control engineering , engineering , physics , electronic engineering , acoustics , control (management) , artificial intelligence , electrical engineering , mechanical engineering , quantum mechanics
To eliminate harmonic components in estimated speed and position information generated by inverter non‐linearities for the interior permanent‐magnet synchronous motor (IPMSM) sensorless control, a second‐order lead compensator‐based quadrature phase‐locked loop (SOLC‐Q‐PLL) is proposed for the sliding mode observer. An adaptive super‐twisting sliding mode observer is taken to estimate back electromotive forces (EMFs) for IPMSM. Harmonic components in estimated position information generated by inverter non‐linearities are analysed. Being dependent on the corresponding analysis, the SOLC‐Q‐PLL is proposed to eliminate sixth position estimation errors only by introducing a second‐order lead compensator without causing phase delay for the phase‐locked loop system. The introduction of the second‐order lead compensator does not influence the bandwidth of the phase‐locked loop system so that a fast transient response can be achieved, and this algorithm is easy to implement digitally due to its simple structure. Eventually, a series of experiments are conducted to validate the capability of the proposed algorithm.