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High‐performance V/f control of PMSM using state feedback control based on n – t coordinate system
Author(s) -
Matsuki Yosuke,
Doki Shinji
Publication year - 2019
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.23198
Subject(s) - ellipse , control theory (sociology) , tangent , position (finance) , coordinate system , voltage , constant (computer programming) , line (geometry) , amplitude , state (computer science) , physics , control (management) , computer science , mathematics , geometry , algorithm , optics , finance , quantum mechanics , artificial intelligence , economics , programming language
This paper proposes a new V/f control method for permanent magnetic synchronous motors (PMSMs) without a position sensor. The proposed method uses state feedback control based on an n – t coordinate system, and controls rotational speed and the voltage amplitude. The t ‐axis is a tangent line of a constant voltage ellipse, and the n ‐axis is a normal line of the ellipse. The t ‐axis current is utilized to place the poles of the transfer function at the desired position at low‐speed and high‐speed conditions. The effectiveness of the proposed method was verified by simulation and experimental results.