Rotor position estimation for a sensorless PMSM using high-frequency signal injection method

Author

Qi Xin ; Zhou Xiaomin ; Wang Changsong ; Wang Xu ; Zhou Ke

Author_Institution

Univ. of Sci. & Technol. Beijing, Beijing, China

fYear

2009

fDate

20-21 Sept. 2009

Firstpage

54

Lastpage

57

Abstract

The high-frequency signal injection method has been proved as a practical technique to estimate the rotor position for PMSM. However, it becomes an additional issue that deserves investigation to improve the detection accuracy. In this paper the detection technique based on fundamental high-frequency signal injection method is presented and its defects are analyzed. A special signal processing method is implemented to demodulate the signal which contains rotor position information. The improved approach with this demodulation technique, which can effectively inhibit the nonlinear distortion caused by inverter and the delay caused by filter, is proposed.

Keywords

demodulation; nonlinear distortion; permanent magnet motors; rotors; signal processing; synchronous motors; high-frequency signal injection method; nonlinear distortion; permanent magnet synchronous motors; rotor position estimation; rotor position information; sensorless PMSM; signal demodulation; signal processing method; Band pass filters; Data mining; Delay estimation; Equations; Inverters; Nonlinear distortion; Signal processing; Stators; Synchronous motors; Voltage; HF signal injection; PMSM; sensorless; signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Information, Computing and Telecommunication, 2009. YC-ICT '09. IEEE Youth Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-5074-9

Electronic_ISBN

978-1-4244-5076-3

Type

conf

DOI

10.1109/YCICT.2009.5382432

Filename

5382432