PLC-Based Pressure Control in Multi-Pump Applications

Open access

Abstract

The paper is devoted to the centrifugal pumps represented the most popular type of pumping equipment used in different areas. The pressure control approach for variable speed driven (VSD) parallel connected centrifugal pumps is reported. The goal of the study is optimization of some quality indices, such as efficiency, consumed power, productivity, energy carrier temperature, heat irradiation, etc. One of them – efficiency – has been studied in the paper more carefully. The mathematical model of pumping process is discussed and a vector-matrix description of the multi-pump application is given. The program-based pressure control system is developed which productivity is changed by regulating the number of working pumps. The paper introduces new pressure control algorithms based on the working point estimation intended for programmable logical controllers (PLC). Experiments prove correctness of the offered methodology.

[1] H. L. Stewart, Pumps, Indianapolis: Sams, 1977, 465 p.

[2] G. Hovstadius, V. Tutterow and S. Bolles, “Getting it right. Applying a system approach to variable speed pumping,” in 4th Int. Conf. on Energy Efficiency in Motor Driven Systems, EEMODS 2005, Heidelberg, Germany, 2005, pp. 304–314.

[3] B. Nesbitt, Handbook of Pumps and Pumping, Elsevier, 2006, 424 p.

[4] H.-Z. Tan and N. Sepehri, “On condition monitoring of pump pressure in a hydraulic servo-drive system,” in Proc. of the 2001 American Control Conf., Arlington, VA, 2001, pp. 4478–4483. http://dx.doi.org/10.1109/ACC.2001.945684

[5] Y. Ji, S. Peng, L. Geng, Z. Wang and L. Qiu, “Pressure loop control of pump and valve combined EHA based on FFIM”, in The 9th Int. Conf. on Electronic Measurement & Instruments, ICEMI 2009, Beijing, China, pp. 3-578–3-582. http://dx.doi.org/10.1109/icemi.2009.5274250

[6] J. Tamminen, T. Ahonen, A. Kosonen, J. Ahola and J. Tolvanen, “Variable speed drive-based pressure optimization of a pumping system comprising individual branch flow control elements,” in 16th European Conf. on Power Electronics and Applications, EPE 2014-ECCE Europe, Lappeenranta, Finland, 2014 pp. 1–11. http://dx.doi.org/10.1109/EPE.2014.6910988

[7] P. Xiaohong, X. Laisheng, M. Zhi and L. Guodong, “The variable frequency and speed regulation constant pressure water supply system based on PLC and fuzzy control,” in Int. Conf. on Measuring Technology and Mechatronics Automation, ICMTMA 2009, Zhangjiajie, Hunan, 2009, pp. 910–913. http://dx.doi.org/10.1109/ICMTMA.2009.392

[8] C. Wei1, X. Meixiang and F. Kangling, “A PLC-based fuzzy PID controller for pressure control in coke-oven,” in 31st Chinese Control Conference, CCC, Hefei, China, 2012, pp. 4754–4758.

[9] A. Sniders and T. Komass, “Invariant method of load independent pressure control in steam boiler,” Electrical, Control and Communication Engineering, vol. 1, issue 1, 2012, pp. 5–10. http://dx.doi.org/10.2478/v10314-012-0001-4

[10] R. Carlson, “The correct method of calculating energy savings to justify adjustable-frequency drives on pumps,” in IEEE Trans. on Ind. Appl., vol. 36, no. 6, 2000, pp. 1725–1733. http://dx.doi.org/10.1109/28.887227

[11] L. Szychta and R. Figura, “Analysis of efficiency characteristics of squirrel-cage induction motor for pump applications,” in 20th Int. Conf. on Electrical Machines, ICEM 2012, Marseille, France, 2012 pp. 73–78. http://dx.doi.org/10.1109/icelmach.2012.6349842

[12] T. Ahonen, J. Tamminen, J. Ahola and J. Kestilä, “Frequency-converter-based hybrid estimation method for the centrifugal pump operational state,” IEEE Trans. on Ind. Electron., vol. 59, no. 12, 2012, pp. 4803–4809. http://dx.doi.org/10.1109/TIE.2011.2176692

[13] J. Viholainen, J. Tamminen, T. Ahonen, J. Ahola, E. Vakkilainen and R. Soukka, “Energy-efficient control strategy for variable speed-driven parallel pumping systems,” in Energy Efficiency, vol. 6, 2013, pp. 495–509. http://dx.doi.org/10.1007/s12053-012-9188-0

[14] Z. Yang and H. Børsting, “Energy efficient control of a boosting system with multiple variable-speed pumps in parallel,” in 49th IEEE Conf. on Decision and Control, Atlanta, GA, USA, 2010, pp. 2198–2203. http://dx.doi.org/10.1109/CDC.2010.5717312

[15] Centrifugal Pumps CDX, Available at: http://ebara-pumps-online.com/CDX.pdf.

[16] Danfoss Products and Solutions, Available: http://www.danfoss.com.

[17] J. E. Finnemore and J. B. Franzini, Fluid Mechanics with Engineering Applications, NY: McGraw Hill, Inc., 2002, 500 p.

[18] I. I. Ionel, Pumps and Pumping with Particular Reference to Variable-Duty Pumps, Amsterdam: Elsevier, 1986, 715 p.

[19] P. G. Kini, R. C. Bansal and R. S. Aithal, “Performance analysis of centrifugal pumps subjected to voltage variation and unbalance,” IEEE Trans. on Ind. Electron., vol. 55, no. 2, 2008, pp. 562–569. http://dx.doi.org/10.1109/TIE.2007.911947

[20] V. Vodovozov, Electrical Drive: Performance, Design and Control, Lambert Academic Publishing, Saarbrücken, 2014, 320 p.

[22] DriveSize, Available: http://ds.nodus.info/starter.aspx.

[23] V. Vodovozov and I. Bakman, “Performance improvement of pumps fed by the variable-speed drives,” Electrical, Control and Communication Engineering, vol. 4, issue 1, 2013, pp. 45–50. http://dx.doi.org/10.2478/ecce-2013-0021

[24] CODESYS in Embedded Automation: Complete IEC 61131-3 IDE for industrial embedded applications, Available: http://www.codesys.com/.

[25] Codesys, Cel Publishing, 2012, 96 p.

[26] B. Vogel-Heuser, Automation & Embedded Systems, Oldenbourg Industrieverlag, 2008, 78 p.

Electrical, Control and Communication Engineering

The Journal of Riga Technical University

Journal Information

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 1111 849 128
PDF Downloads 551 431 50