NDLI: Cancellation of harmonic torque disturbance in permanent magnet synchronous motor drives by using an adaptive feedforward controller

Content Provider	IET Digital Library
Author	Qamar, Nezar Abou Hatziadoniu, Constantine
Abstract	The effects of disruptive harmonic torque disturbances on permanent magnet synchronous motor drives originating at the mechanical load or from cogging can be mitigated by producing a counteracting electric torque. The study proposes using an adaptive feedforward controller (AFC) for this purpose. The AFC is designed to operate as an auxiliary loop in parallel with a field-oriented controller, which provides speed control. The AFC input is the motor speed control error. The loop is tuned at the frequency of the harmonic torque and its output is added to the q-axis current reference as a variation current of the same frequency. The main advantage of the proposed method is that it does not require an estimation of the disturbance torque. The theoretical analysis of the scheme is presented in the study. Experimental results are also presented in the study from a motor drive system where the mechanical load produces harmonic torques. The results demonstrate the effectiveness of the AFC in significantly reducing speed oscillations by cancelling the effect of the torque harmonic disturbance.
Starting Page	2215
Ending Page	2221
Page Count	7
ISSN	17554535
Volume Number	11
e-ISSN	17554543
Issue Number	Issue 14, Nov (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/11/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5423
Journal	IET Power Electronics
Publisher Date	2018-08-30
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Acceleration Adaptive Control Adaptive Feedforward Controller Angular Velocity Control Control of Electric Power System Counteracting Electric Torque Disruptive Harmonic Torque Disturbances Disturbance Torque Drive Feedforward Field-oriented Controller Harmonic Torque Disturbance Machine Control Machine Vector Control Mechanical Load Motor Drive Motor Drive System Motor Speed Control Error Permanent Magnet Motors Permanent Magnet Synchronous Motor Drive Rotation Control Synchronous Machine Synchronous Motor Drive Synchronous Motors Torque Torque Control Torque Harmonic Disturbance Velocity Velocity Control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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