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A new automatic slip gain tuning procedure for IFOC motor drives
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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. |
Download |
Filename: | EPE2001 - PP01120 - Consoli.pdf |
Filesize: | 202.5 KB |
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Type |
Members Only |
Date |
Last modified 2004-03-11 by System |
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