NDLI: Analysis and suppression of high-frequency inverter modulation in sensorless position-controlled induction machine drives

Content Provider	IEEE Xplore Digital Library
Author	Teske, N. Asher, G.M. Sumner, M. Bradley, K.J.
Copyright Year	1972
Abstract	This paper focuses on the modulation of high-frequency (HF) currents required for sensorless position control of induction machine drives. Such drives can be realized by using the modulating effect of the rotor slots or from an engineered rotor saliency. Distortion due to saturation is known to cause a deterioration in the rotor position estimate. This paper reports a hitherto unreported distortion arising from inverter deadtime that will affect all sensorless drives using HF injection techniques. The deadtime distortion behaves in a similar way to that of saturation but has some specific characteristics that are presented in this work. Standard deadtime compensation techniques reduce but do not eliminate the distorting modulation. The residual distortion should be suppressed for good position estimation. The paper presents a new compensation strategy termed space modulation profiling which is effective in suppressing the HF modulations due to inverter deadtime and saturation saliencies. Experimental results show the sensorless drive under heavy load for zero-speed and transient operation.
Sponsorship	IEEE Industry Applications Society
Starting Page	10
Ending Page	18
Page Count	9
File Size	1371070
File Format	PDF
ISSN	00939994
Volume Number	39
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Inverters Induction machines Hafnium Position control Industry Applications Society Inductance Sensorless control Associate members Drives Machine vector control
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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