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Numerical Study of Constant Pressure Systems with Variable Speed Electric Pumps

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  • Rogger José Andrade-Cedeno

    (Departamento de Electricidad, Facultad de Ciencias Matemáticas, Físicas y Químicas, Universidad Técnica de Manabí, Portoviejo 130150, Ecuador)

  • Jesús Alberto Pérez-Rodríguez

    (Departamento de Electricidad, Facultad de Ciencias Matemáticas, Físicas y Químicas, Universidad Técnica de Manabí, Portoviejo 130150, Ecuador)

  • Carlos David Amaya-Jaramillo

    (Departamento de Electricidad, Facultad de Ciencias de la Ingeniería, Universidad Técnica Estatal de Quevedo, Quevedo 120550, Ecuador)

  • Ciaddy Gina Rodríguez-Borges

    (Departamento de Ingeniería Industrial, Facultad de Ciencias Matemáticas, Físicas y Químicas, Universidad Técnica de Manabí, Portoviejo 130150, Ecuador)

  • Yolanda Eugenia Llosas-Albuerne

    (Departamento de Electricidad, Facultad de Ciencias Matemáticas, Físicas y Químicas, Universidad Técnica de Manabí, Portoviejo 130150, Ecuador)

  • José David Barros-Enríquez

    (Departamento de Diseño, Facultad de Ciencias de la Industria y Producción, Universidad Técnica Estatal de Quevedo, Quevedo 120550, Ecuador)

Abstract

This work focuses on the modeling and simulation of constant pressure systems based on variable speed pumps, with the aim of studying and evaluating their performance from a multidisciplinary approach. Using the physical models of the Simscape library, from MATLAB/Simulink R2019b, two study cases are assembled consisting of: piping system, a hydropneumatic tank, centrifugal pumps with an induction motor, variable speed drives, and a control system. Case one is comprised of one pump at a fixed speed and another at variable speed, and case two with both pumps at variable speed. For the parameterization of the models, data from manufacturers and process requirements are used. The different stages of the control system are integrated and configured; these are constant V/f control, slip compensation, space vector modulation (SVM,) and pressure controller. The dynamic response of the system, power saving, transient current at startup, and harmonic distortion are evaluated. The results showed that both cases kept the pressure constant in the face of variable flow demand and smoothed out the current during startup. Case two saved more energy (between 28 and 49%) but generated more harmonic distortion. In addition, both cases have better performance compared with traditional fixed-speed technologies.

Suggested Citation

  • Rogger José Andrade-Cedeno & Jesús Alberto Pérez-Rodríguez & Carlos David Amaya-Jaramillo & Ciaddy Gina Rodríguez-Borges & Yolanda Eugenia Llosas-Albuerne & José David Barros-Enríquez, 2022. "Numerical Study of Constant Pressure Systems with Variable Speed Electric Pumps," Energies, MDPI, vol. 15(5), pages 1-22, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:5:p:1918-:d:765249
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    References listed on IDEAS

    as
    1. Ioan Sarbu & Emilian Stefan Valea, 2015. "Energy Savings Potential for Pumping Water in District Heating Stations," Sustainability, MDPI, vol. 7(5), pages 1-15, May.
    2. Kalair, A. & Abas, N. & Kalair, A.R. & Saleem, Z. & Khan, N., 2017. "Review of harmonic analysis, modeling and mitigation techniques," Renewable and Sustainable Energy Reviews, Elsevier, vol. 78(C), pages 1152-1187.
    3. Arun Shankar, Vishnu Kalaiselvan & Umashankar, Subramaniam & Paramasivam, Shanmugam & Hanigovszki, Norbert, 2016. "A comprehensive review on energy efficiency enhancement initiatives in centrifugal pumping system," Applied Energy, Elsevier, vol. 181(C), pages 495-513.
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