Next Article in Journal
Batch Growth of Chlorella Vulgaris CCALA 896 versus Semi-Continuous Regimen for Enhancing Oil-Rich Biomass Productivity
Previous Article in Journal
Hydrodynamic Effects on Spectroscopic Water Detection in Gasoline Pipe Flow
Article Menu

Export Article

Open AccessArticle
Energies 2014, 7(6), 3823-3839;

Optimum Peak Current Hysteresis Control for Energy Recovering Converter in CDI Desalination

Área de Tecnología Electrónica, Universidad de Oviedo, Edificio Departamental No. 3. Campus Universitario, 33203 Gijón, Spain
Author to whom correspondence should be addressed.
Received: 28 April 2014 / Revised: 9 June 2014 / Accepted: 11 June 2014 / Published: 18 June 2014
Full-Text   |   PDF [964 KB, uploaded 17 March 2015]   |  


Capacitive De-Ionization (CDI) is becoming a suitable alternative for desalination. The low cost of the materials required and its reduced energy consumption can be critical factors for developing this technique. CDI technology does not require a high-pressure system and the energy storage capability of CDI cells allows it to be reused in other CDI cells, thus minimizing consumption. The goal of the power stage responsible of the energy recovery is transferring the stored energy from one cell to another with the maximum possible efficiency, thus allowing the desalination process to continue. Assuming hysteresis current control is implemented at the DC/DC (direct current) converter, this paper aims to determine the optimum peak current through the inductor in each switching period with a view to maximizing overall efficiency. The geometrical parameters of the desalination cell and the NaCl concentration modify the cell electrical properties. The peak current control of the power stage should be adapted to the cell characteristics so that the efficiency behavior of the whole CDI system can be improved. The mathematical model defined in this paper allows the CDI plant automation using the peak inductor current as control variable, adapting its value to the salt concentration during the desalination process. View Full-Text
Keywords: desalination; Capacitive De-Ionization; DC/DC (direct current) converter; nanoporous carbon desalination; Capacitive De-Ionization; DC/DC (direct current) converter; nanoporous carbon

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Pernía, A.M.; J. Alvarez-González, F.; Díaz, J.; Villegas, P.J.; Nuño, F. Optimum Peak Current Hysteresis Control for Energy Recovering Converter in CDI Desalination. Energies 2014, 7, 3823-3839.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top