Accuracy, Bandwidth, and Stability Limits of Carrier-Signal-Injection-Based Sensorless Control Methods

This paper studies the performance limits of carrier-signal-injection-based sensorless control methods. When a high-frequency carrier-signal voltage is injected into a salient ac machine, two types of signals are created that can be used to estimate the rotor position: 1) the negative-sequence carri...

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Bibliographic Details
Published inIEEE transactions on industry applications Vol. 43; no. 4; pp. 990 - 1000
Main Authors Garcia, P., Briz, F., Degner, M.W., Diaz-Reigosa, D.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2007
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
AC machines
Bandwidth
Carriers
Current carriers
Electric potential
Estimates
Measurement
Performance analysis
Pulse width modulation inverters
Rotor position estimation
Rotors
saliency-based sensorless control
Sensorless control
Signal analysis
Stability
Stators
Voltage
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Summary:This paper studies the performance limits of carrier-signal-injection-based sensorless control methods. When a high-frequency carrier-signal voltage is injected into a salient ac machine, two types of signals are created that can be used to estimate the rotor position: 1) the negative-sequence carrier-signal current and 2) the zero-sequence carrier-signal components. The limitations of ac machine sensorless control using each of these signals are analyzed in this paper. The analysis focuses on three key performance metrics: 1) the accuracy; 2) the bandwidth; and 3) the stability of the estimated position.
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ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2007.900460