Premium
Position Sensorless Control for IPMSM Based on Extended EMF and Voltage Injection Synchronized with Pulse‐Width Modulation Carrier
Author(s) -
YOKOYAMA TOMOYA,
UCHIDA KOUSUKE,
KUBOTA HISAO
Publication year - 2017
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.22944
Subject(s) - counter electromotive force , pulse width modulation , control theory (sociology) , voltage , electromotive force , position (finance) , modulation (music) , magnet , pulse (music) , amplitude , physics , computer science , engineering , electrical engineering , acoustics , control (management) , optics , finance , artificial intelligence , economics
SUMMARY This paper presents a new position sensorless control system for an interior permanent magnet synchronous motor (IPMSM). The proposed method is based on the extended electromotive force (EMF) and voltage injection synchronized with a pulse‐width modulation carrier. The proposed method does not need to switch the estimation method by speed in order to estimate the magnetic pole position by extended EMF, even at low speeds. Further, the amplitude of the superimposing voltage is changed according to the extended EMF; the applied voltage is not saturated in the high‐load and high‐speed regions. The effectiveness of the proposed sensorless control system was verified experimentally.