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   A new automatic slip gain tuning procedure for IFOC motor drives   [View] 
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 Author(s)   A. Consoli; G. Scarcella; A. Testa 
 Abstract   The paper presents a straightforward technique to automatically tune the slip gain in Induction Motor Drives based on the Indirect Field Oriented Control approach. A key feature of the proposed technique is that it is effective even at very low speed with light loads, where standard tuning procedures generally fail. Moreover it does not require the knowledge of any motor parameter. According to the proposed technique the slip gain tuning is performed by processing the effects exerted by an additional high frequency signal on the zero sequence stator voltage. As a result of the interaction between the main air gap flux and a high frequency flux generated by the additional voltage signal, a new zero sequence stator voltage component is generated at a frequency equal to the difference between the frequency of the main air gap flux and the frequency of the additional high frequency signal. By comparing the frequency of the air gap flux, estimated from the zero sequence stator voltage and the frequency computed by the indirect field oriented control algorithm it is possible to on line compensate rotor time errors. The proposed technique can be used either for the initial drive commissioning, either for on-line tuning. Experimental results are presented to show that the procedure is effective and does not interfere with normal operations of the drive. 
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Filename:EPE2001 - PP01120 - Consoli.pdf
Filesize:202.5 KB
 Type   Members Only 
 Date   Last modified 2004-03-11 by System