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Parameter Identification of Vector-Controlled Induction Motor using Skin Effect of Rotor Bars at Standstill  

Kwon, Young-Su (LS산전 자동화연구소)
Moon, Sang-Ho ((주)포스콘 기술연구소)
Lee, Jeong-Hum ((주)포스콘 기술연구소)
Kwon, Byung-Ki ((주)포스콘 기술연구소 철강플랜트)
Choi, Chang-Ho ((주)포스콘 기술개발실)
Seok, Jul-Ki (영남대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.13, no.6, 2008 , pp. 403-410 More about this Journal
Abstract
This paper suggests a standstill estimator to accurately identify induction motor (IM) parameters necessary for the vector control. A mathematical model that faithfully represents the general skin effect is introduced. Then, two exciting signals with a different frequency are sequentially injected to track the parameters based on the skin effect of the rotor bar. Little knowledge of the unknown motor allows the proposed methodology to employ a closed-loop control of an injected current, rather than open-loop voltage injection approaches. Subsequently, this control scheme proactively prevents electrical accidents resulting from an inadequate open-loop voltage injection. We develop a specialized offline commissioning test to compensate the phase delay resulting from the drive, which significantly affects the precision of the IM parameters. The effectiveness of the identification technique is validated by means of experiments performed on the three different IMs.
Keywords
Standstill induction motor parameters; Skin effect; Closed-loop control; The phase delay;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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