A4 Conference proceedings

Variable-speed-drive-based soft sensor for the twin-rotary screw-compressor output pressure


Publication Details
Authors: Pöyhönen Santeri, Ahonen Tero, Saukko Juha.
Publication year: 2017
Language: English
Related Journal or Series Information: European Conference On Power Electronics And Applications
Title of parent publication: 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)
Journal acronym: EPE-ECCE Europe
eISBN: 978-90-75815-27-6
ISSN: 2325-0313
JUFO-Level of this publication: 1
Open Access: Not an Open Access publication

Abstract


Compressed-air
systems account for a notable share of the industrial electricity consumption.
At the same time, a significant potential to improve the energy efficiency of
compressed-air generation has been recognized. Variable-speed drives provide an
efficient and flexible way to regulate the output of a screw compressor and to
match the typically intermittent demand of compressed air. In addition to
capacity control, drive estimates for the electric motor operation can be used
in soft-sensing methods. This paper proposes a novel soft sensor, which can
monitor the output pressure of a twin-rotary screw compressor based on the variable-speed
drive’s estimates for the compressor’s rotational speed and shaft torque.
First, the working principle of the soft sensor is explained in detail and
suggestions for commissioning, i.e. tuning it, are given. Finally, the
feasibility of the soft sensor is verified with laboratory measurements.


Last updated on 2018-19-10 at 07:55