Closed-loop Current Control of Synchronous Motor Drives with Position Sensing Harmonics

A detailed investigation of the effects of harmonics in sine cosine sensors used in a permanent magnet synchronous motor drive is presented in this paper. Analytical models capturing the effects of different types and levels of non-ideal sensing induced harmonics in the position and velocity estimat...

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Bibliographic Details
Main Authors: Pramod, Prerit, Namburi, Krishna MPK
Format: Conference Proceeding
Language:English
Subjects:
closed-loop control
Current control
current regulator
electric motor drive
feedback current control
Harmonic analysis
permanent magnet synchronous motor
Perpendicular magnetic anisotropy
position sensor harmonics
Saturation magnetization
Sensors
sine cosine sensor
Torque
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Summary:A detailed investigation of the effects of harmonics in sine cosine sensors used in a permanent magnet synchronous motor drive is presented in this paper. Analytical models capturing the effects of different types and levels of non-ideal sensing induced harmonics in the position and velocity estimates are presented and utilized to derive closed-loop transfer matrices describing their impact on the currents, voltage and electromagnetic torque. Emphasis is laid on the variation of the control signal, which is the voltage command generated by the current regulator, for different current regulator architectures and tuning parameters at several operating conditions with various position sensing errors. The analytical models are validated with extensive simulations on a practical drive system.
ISSN:2329-3748
DOI:10.1109/ECCE.2019.8912674