Turbo Expander System Behavior Improvement Using an Adaptive Fuzzy PID Controller

Document Type : Research Article

Authors

1 1 Department of Engineering, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran

2 2 Electrical Engineering Department, Amirkabir University of Technology, Tehran, Iran

Abstract

Turbo-expanders are used in industries for cooling, liquefaction and also power generation. An important part of these turbines is the variable angle nozzle causing a nonlinear behavior that is not well recognized among the prime movers of the dispersed generators. In this paper, at first, the turbo expander system is evaluated in details and its nonlinear behavior is investigated. Then, the system is linearized and variations of its eigenvalues are investigated by a system modal analysis for some changes in input gas stream parameters. Afterwards, variations of nozzle angle and output pressure are studied using a conventional PID controller. Due to system nonlinearity, adaptive PID and fuzzy controllers are then designed to improve the system behavior by controlling mechanical parts of turbine nozzle actuator. An adaptive controller uses fuzzy system as a nonlinear tuner that specifies the coefficients for conventional PID controller of the system. A comparison of controllers’ effects is presented. Simulation results show that the turbine response to step changes in gas flow rate or pressure would be more steady when the adaptive or fuzzy controllers are used.

Keywords

References

[1]A. Cleveland, “Power Generation with Turbo-expander”, ASME, 90-DT-2: pp 26-31, 1990.
[2]Heinz P. Bloch; Claire Soares, “Turboexpander and Process Applications”, Gulf Professional Publishing, Boston, 2001.
[3]H. Daneshi H. Khorashadi Zadeh, A. Lotfjou Choobari, “Turboexpander as a distributed generator”, Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century: pp 1–7, 2008.
[4]Mehdi Taleshian Jelodar, Hasan Rastegar, Hossein Askarian Abyaneh, “Modeling turbo-expander systems”, SIMULATION, 89(2): pp 234-248, 2013.
[5]M. Taleshian Jelodar, H. Rastegar, M. Pichan, “voltage improvement using a new control strategy for turbo-expander driving systems”, Electrical Power and Energy Systems, 64: pp 1176–1184, 2015.
[6]Jan Peirs, Dominiek Reynaerts, Filip Verplaetsen, “A microturbine for electric power generation”, Sensors and Actuators A, 113: pp 86–93, 2004.
[7]D. Krähenbühl, C. Zwyssig, H. Weser, J. W. Kolar, “Theoretical and experimental results of a mesoscale electric power generation system from pressurized gas flow”, IOP Publishing, Journal of Micromechanics and Microengineering, 19: pp 1-7, 2009.
[8]Soo-Yong Cho, Chong-Hyun Cho, Chaesil Kim, “Performance characteristics of a turbo expander substituted for expansion valve on air-conditioner” Experimental Thermal and Fluid Science, 32: pp 1655–1665, 2008.
[9]Sylvain Quoilin, Vincent Lemort, Jean Lebrun, “Experimental study and modeling of an Organic Rankine Cycle using scroll expander”, Applied Energy, 87, pp: 1260–1268, 2010.
[10]Vincent Lemort, Sylvain Quoilin, Cristian Cuevas, Jean Lebrun, “Testing and modeling a scroll expander integrated into an Organic Rankine Cycle”, Applied Thermal Engineering, 29, pp 3094–3102, 2009.
[11]Jesse D. Maddaloni, Andrew M. Rowe, Natural gas exergy recovery powering distributed hydrogen production, International Journal of Hydrogen Energy, 32: pp 557–566 ,2007.
[12]Mehdi Babaei Turkemani, Hassan Rastegar, “Modular Modeling of Turbo-Expander Driven Generators for Power System Studies”, IEEJ Transactions on Electrical and Electronic Engineering, IEEJ Trans., 4: pp 645–653, 2009.
[13]Mehdi Babaei Turkemani, Hassan Rastegar, “Flicker Assessment of Turbo-Expander Driven Synchronous Generator in Power Distribution Network”, Journal of Iranian Association of Electrical and Electronics Engineers, 7: pp 53-59, 2010.
[14]M. Taleshian, H. rasregar, H. Askarian, “Modeling and Power Quality Improvement of Turbo-Expander Driving an Induction Generator”, International Journal of Energy Engineering, 2: pp 131-137, 2012.
[15]D. E. Winterbone, N. Munro, P. M. G. Lourtie, “A preliminary study of the design of a Controller for an Automotive Gas Turbine”, Transactions of the ASME, 95: pp 244-250, 1973.
[16]Srithar Rajoo, Ricardo Martinez-Botas, “Variable Geometry Mixed Flow Turbine for Turbochargers: An Experimental Study”, International Journal of Fluid Machinery and Systems, 1: pp 155-168, 2008.
[17]HU Liangjun, YANG Ce, SUN Harold, ZHANG Jizhong, LAI Mingchi, “Numerical Analysis of Nozzle Clearance’s Effect on Turbine Performance”, Chinese Journal of Mech. Engineering, 2010.
[18]A. Romagnoli, R.F. Martinez-Botas, S. Rajoo, “Steady state performance evaluation of variable geometry twin-entry turbine”, International Journal of Heat and Fluid Flow, 32: pp 477-489, 2011.
[19]N. Karamanis, R.F. Martinez-Botas, “Mixed Flow Turbines for Automotive Turbochargers: Steady and unsteady Performance”, IMechE Int. J. Engine Research, 3: pp 127-138, 2002.
[20]F. Haglind, “Variable geometry gas turbines for improving the part-load performance of marine combined cycles – Gas turbine performance”, Energy, 35: pp 562–570, 2010.
[21]D. H. Cooke, “On Prediction of Off-Design Multistage Turbine Pressures by Stodola’s Ellipse”, Transactions of the ASME, 107: pp 596-606, 1985.
[22]Ali Chaibakhsh, Ali Ghaffari, “Steam turbine model”, Simulation Modelling Practice and Theory, 16: pp 1145– 1162, 2008.
[23]A. Mehmood, S. Laghrouche, M. El Bagdouri, “Modeling identification and simulation of pneumatic actuator for VGT system”, Sensors and Actuators A: Physical, 165: pp 367–378, 2010.
[24]George K. I. Mann, Bao-Gang Hu, Raymond G. Gosine, “Analysis of direct action fuzzy PID controller structures”, IEEE TRANSACTIONS ON SYSTEMS, MAN, AND CYBERNETICS—PART B: CYBERNETICS, 29-3: pp 371-388, 1999.
AUT Journal of Modeling and Simulation
Volume 49, Issue 1
June 2017
Pages 23-32

Files

Share

How to cite

Statistics