Optimization for Biogas Power Plants using Automatic Control of Gas Pressures

Dodiek Ika Candra, Camilo Andreas Wilches Tamayo


In many cases, gas storages on biogas power plants are not used optimally to store gas as much as their capacity. The digester is sometimes overload to store gas and the controller cannot deliver gas to other storage. Consequently, gas is often released from digester to avoid over pressure. At the end, biogas power plant has less efficiency. Hence, a mechanism to control gas pressure to make different pressure between its storages is required. Fans were used to manipulate the most majority system pressures on a biogas power plant using frequency converters. Measurements, simulations, and experiments were conducted to create a new system on a biogas power plant. A controller, Programmable Logic Controller was used to control the entire system pressure using Proportional-Integral-Derivative algorithm. When the gas pressures are not in the allowable range of pressure, then the controller changes the fans’ frequency to the desired conditions. As a result, gas moves to another storage and system pressures are in the allowable range.


control biogas pressures, biogas storages optimization, biogas system pressure

Full Text:



Bwe, “Internal report bwe,Daten Geiger�, Friesoythe, 2010.

Balasubramania, S, “Non linear fermenter with pressure dynamics�, ME 697Y Intelligent system, Purdue University, 2012.

DIN 4134, Deutsche Norm 4134, “Tragluftbauten: berechnung, ausführung,

und betrieb�, Germany, February 1983.

Driscoll, S, “The Design and Qualification of a Hydraulic Hardware-in-the- Loop Simulator�, School of Mechanical Engineering Georgia Institute of Technology ,August 2005.

Liermann , Dr.-Ing. Matthias, “Pressure Control using PID and Nonlinear Input/Output Linearization Method Approach�, American University of Beirut.

Sanstede et al .G, US3516429 “System for automatic control of gas pressure�, June 23, 1970.

Shaw, A. J, “The PID Control Algorithm How it works, how to tune it, and how to use it�, Process Control Solutions, December 1, 2003.

Siemens, “Siemens Standard Software for S7-300 and S7-400 PID Control user manual C79000-G7076-C516-01, Siemens AG Automation Group Industrial Automation Systems�, Germany, 1996.

Vukic, Prof. Zoran, “Automation and Robotics Research Institute The University of Texas at Arlington, LECTURES ON PID CONTROLLERS�, PhD Faculty of Electrical Engineering and Computing University of Zagreb, Ognjen Kuljaca, April 2002.

Vodencarevic, A, “Design of PLC-based Smith Predictor for Controlling Processes with Long Dead Time�, proceeding IMECS, Hongkong, 2010. crossref

Wolf .C, et all, “Biogas Plant Control and Optimization Using Computational Intelligence Methods Biogasanlagenregelung und -optimierung mit Computational Intelligence Methoden�, Cologne University of Applied Sciences, Automatisierungstechnik 57 (2009) 12. crossref

(2012, February). "Oekobit biogas process." [Online]. Available: http://www.oekobit-biogas.com/en/the-biogas-process.html

(2012, February). "Under pressure fan." [Online]. Available: http://www.karl-klein.de/produktuebersicht/niederdruck-ventilatoren/

(2012, March). "Technical support of Siemens PLC." [Online]. Available: http://support.automation.siemens.com

Article Metrics

Metrics Loading ...

Metrics powered by PLOS ALM


  • There are currently no refbacks.

Copyright (c)