Performance of Pulsating High-Frequency Current Injection Based Sensorless Control of PMSM

Jian Min Wang

doi:10.4028/www.scientific.net/AMM.347-350.610

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 347-350Performance of Pulsating High-Frequency Current...

Performance of Pulsating High-Frequency Current Injection Based Sensorless Control of PMSM

Abstract:

In the paper the principle and performances of the pulsating current injection based sensorless control of permanent magnet synchronous motor (PMSM) are analyzed theoretically and investigated by simulations. In the analyses, the effects of the speed EMF terms and the deviation between the actual d-axis high-frequency current and the command, which results from the limited gain and bandwidth of the current control loop, are all taken into account. It is shown that the pulsating current injection method can achieve stable position estimation in a wide speed range. But appreciable position errors will result at high speeds due to the cross-coupling effects of the speed EMFs and the tracking error between the actual and command carrier current. In order to improve the performance, a modified scheme is proposed. Its validity is confirmed by simulations.

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Periodical:

Applied Mechanics and Materials (Volumes 347-350)

Pages:

610-616

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.347-350.610

Citation:

Cite this paper

Online since:

August 2013

Authors:

Jian Min Wang

Keywords:

Effect of Speed EMF, Performance, Permanent Magnet Synchronous Motor, Pulsating Current Injection, Sensorless Control

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