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STUDY OF THE SENSORLESS OPERATING POINT ESTIMATION FOR TURBOCOMPRESSORS
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| Author(s) |
Lauri NIINIMAKI, Tero AHONEN, Jussi TAMMINEN, Ahti JAATINEN-VARRI, Jero AHOLA, Jukka TOLVANEN |
| Abstract |
Frequency converters enable energy savings and sensorless operation monitoring in pump and fansystems. This is possible with model-based estimation methods that apply frequency converterestimates of the rotational speed and the shaft power. Since compressors produce air flow similarly asfans, the same estimation methods should be applicable, if the fluid density change can be detectedand analyzed. In addition, suction side air conditions have an impact on the estimation of thecompressor operating point and should therefore be considered accordingly.This paper studies the use of the QmP and Qmϕ estimation methods for a radial-flow turbocompressorand the accuracy of the affinity laws in the case of compressors. The results show that the Qmϕmethod could be applied to turbocompressors, and the affinity laws are accurate enough if theperformance curves are measured with sufficiently small rotational speed steps. |
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| Filename: | 0384-epe2013-full-14444392.pdf |
| Filesize: | 221.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2014-02-09 by System |
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