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http://dx.doi.org/10.7467/KSAE.2014.22.2.107

Performance Improvement of PMSM Current Control using Gain Attenuation and Phase Delay Compensated LPF  

Kim, Minju (Graduate School of Control and Instrumentation Engineering, Changwon National University)
Choi, Chinchul (Graduate School of Control and Instrumentation Engineering, Changwon National University)
Lee, Wootaik (Department of Control and Instrumentation Engineering, Changwon National University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.22, no.2, 2014 , pp. 107-114 More about this Journal
Abstract
This paper applies a compensated low pass filter (LPF) to current measurements for permanent magnet synchronous motor (PMSM) drives. The noise limits the bandwidth of current controllers and has more adverse influences on control performances under the light load condition because of the low signal-to-noise ratio. In order to eliminate the noise sensitivity, this paper proposes a digital LPF with a compensator of gain attenuation and phase delay which are unacceptable in current information for PMSM drives. Characteristics of the proposed LPF are analyzed in comparison with the general LPFs. The compensated LPF is basically designed by the orthogonal property of the measured currents in the ${\alpha}{\beta}$ stationary reference frame. In addition, an implementation issue of the proposed method is discussed. Experimental results using the proposed method show improvements of the current control performance from two perspectives, rapid step responses and reductions of harmonic distortion.
Keywords
Phase/Gain compensation; Low pass filter; Noise; Permanent magnet synchronous motor; Current control;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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