DocumentCode :
3536220
Title :
Study of the sensorless operating point estimation for turbocompressors
Author :
Niinimaki, Lauri ; Ahonen, Tapani ; Tamminen, Jussi ; Jaatinen-Varri, Ahti ; Ahola, J. ; Tolvanen, Jukka
Author_Institution :
LAPPEENRANTA Univ. of Technol., Lappeenranta, Finland
fYear :
2013
fDate :
2-6 Sept. 2013
Firstpage :
1
Lastpage :
10
Abstract :
Frequency converters enable energy savings and sensorless operation monitoring in pump and fan systems. This is possible with model-based estimation methods that apply frequency converter estimates of the rotational speed and the shaft power. Since compressors produce air flow similarly as fans, the same estimation methods should be applicable, if the fluid density change can be detected and analyzed. In addition, suction side air conditions have an impact on the estimation of the compressor operating point and should therefore be considered accordingly. This paper studies the use of the QmP and Qφm estimation methods for a radial-flow turbocompressor and the accuracy of the affinity laws in the case of compressors. The results show that the Qφm method could be applied to turbocompressors, and the affinity laws are accurate enough if the performance curves are measured with sufficiently small rotational speed steps.
Keywords :
compressors; frequency convertors; sensorless machine control; turbomachinery; variable speed drives; affinity laws; frequency converters; performance curves; radial-flow turbocompressor; rotational speed steps; sensorless operating point estimation; Compressors; Estimation; Frequency conversion; Frequency estimation; Temperature measurement; Velocity control; Adjustable speed drive; Efficiency; Estimation technique; Sensorless control; Variable speed drive;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Applications (EPE), 2013 15th European Conference on
Conference_Location :
Lille
Type :
conf
DOI :
10.1109/EPE.2013.6631989
Filename :
6631989
Link To Document :
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