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Title: Rotor-position estimation for induction machines at zero and low frequency utilizing zero-sequence currents
Authors: Spiteri Staines, Cyril
Asher, Greg M.
Sumner, Mark
Keywords: Electric machinery, Induction
Electric machinery -- Rotors
Issue Date: 2004-10
Publisher: Institute of Electrical and Electronics Engineers
Citation: Spiteri Staines, C., Asher, G. M., & Sumner, M. (2004). Rotor position estimation for induction machines at zero and low frequency utilising zero sequence currents. Industry Applications Conference, 2004 - 39th IAS Annual Meeting, Seattle, USA. 105-112.
Abstract: This paper considers the position and speed estimation at low- and zero-frequency operations in standard deltaconnected cage induction machines (IMs). A rotor-slot detection technique is used, where test vectors are injected during the pulsewidth-modulation (PWM) periods and the resulting zerosequence- current derivatives (ZSCDs) are measured using a nonintegrating Rogowski coil. The rotor slotting in a near-standard 30-kW symmetric IM is utilized for rotor-position tracking. The rotor-slot number was selected to yield a measurable “position-dependent” ZSC. Experimental results show the variation of the measured current signals with rotor position and how these are used for tracking of the rotor position.
Appears in Collections:Scholarly Works - FacEngIEPC

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