Novel Load Following Controller of Microturbine Generation System for Stand-alone/Grid-connected Operation

  • Pouyan Asgharian Department of Electrical Engineering, Faculty of Engineering, University of Zanjan, Zanjan, Iran
  • Reza Noroozian Department of Electrical Engineering, Faculty of Engineering, University of Zanjan, Zanjan, Iran.
Keywords: Microturbine, Stand-alone mode, Grid-connected mode, Load-following performance, Flexible operation


Among various types of Distributed Generations, Microturbine (MT) Generation (MTG) systems are known as highly reliable and efficient sources. The MT must support demands in different conditions, which requires its proper control. In this paper, hybrid operation of the MTG is considered which is initially isolated from utility grid, and after that it is connected to the distribution network. A robust control method is used for stand-alone mode and a novel power-voltage control strategy is applied to grid-tied inverter. In stand-alone mode, the voltage, frequency and current are used as control parameters instead of traditional voltage-frequency control. In grid-connected novel controller, the inner voltage loop is substituted with the current loop, so it is based on powers and voltage. The simulations are performed by MATLAB/Simulink, with the results indicating proper power sharing as well as load-following performance with the minimum level of distortion. The proposed strategy can be used in hybrid operations of the MTG.


[1] Breeze P. Microturbines. In: Breeze P, editor. Gas-Turbine Power Generation. 4 Netherland: Elsevier Science & Technology Books, 2016. pp. 77-82.
[2] Ismail MS, Moghavvemi M, Mahlia, TMI. Current utilization of microturbines as a part of a hybrid system in distributed generation technology. Renewable and Sustainable Energy Reviews 2013; 21: 142-152.
[3] Asgharian P, Noroozian R. Microturbine Generation Power Systems. In: Gharehpetian GB, Mousavi Agah SM, editors. Distributed Generation Systems: Design, Operation and Grid Integration. Netherland: Butterworth-Heinemann, Elsevier Science & Technology Books, 2017. pp. 149-219.
[4] Nayak SK, Gaonkar DN. Modeling and Performance Analysis of Microturbine Generation System in Grid Connected/Islanding Operation. INTERNATIONAL JOURNAL of RENEWABLE ENERGY RESEARCH 2012; 2: 750-757.
[5] Ranjbar M, Mohaghegh S, Salehifar M, Ebrahimirad H, Ghaleh A. Power Electronic Interface in a 70 kW Microturbine-Based Distributed Generation. In: IEEE 2nd Power Electronics, Drive Systems and Technologies Conference; 16-17 Feb. 2011; Tehran, Iran: IEEE. pp. 111-116.
[6] Saravanan, G, Gnanambal I. Design and Efficient Controller for Micro Turbine System. Circuits and Systems 2016; 7: 1224-1232.
[7] Sarajian, S., "Design and Control of Grid Interfaced Voltage Source Inverter with Output LCL Filter", International Journal of Electronics Communications and Electrical Engineering, Vol. 4, pp. 26–40, 2014.
[8] Saha AK, Chowdhury S, Chowdhury SP, Crossley PA. Modeling and Performance Analysis of a Microturbine as a Distributed Energy Resource. IEEE T ENERGY CONVER 2009; 24: 529-538.
[9] Asgharian P, Noroozian R. Modeling and simulation of microturbine generation system for simultaneous grid-connected/islanding operation. In: IEEE 24th Iranian Conference on Electrical Engineering (ICEE); 10-12 May 2016; Shiraz, Iran: IEEE. pp. 1528-1533.
[10] Shankar G, Mukherjee V. Load-following performance analysis of a microturbine for islanded and grid connected operation. INT J ELEC POWER 2014; 55: 704-713.
[11] Asgharian P, Noroozian R. Dynamic Modeling of a Microturbine Generation System for Islanding Operation based on Model Predictive Control. In: 31st international Power System Conference (PSC); 24-26 Oct. 2016; Tehran, Iran.
[12] Keshtkar, H., Solanki, J., Solanki, S. K., "Dynamic modeling, control and stability analysis of microturbine in a microgrid", IEEE PES T&D Conference and Exposition, Chicago, USA, 2014.
[13] Mousavi GSM. An autonomous hybrid energy system of wind/tidal/microturbine/battery storage. INT J ELEC POWER 2012; 43: 1144-1154.
[14] Comodi G, Renzi M, Cioccolanti L, Caresana F, Pelagalli L. Hybrid system with micro gas turbine and PV (photovoltaic) plant: Guidelines for sizing and management strategies. ENERGY 2015; 89: 226-235.
[15] Bakalis DP, Stamatis AG. Incorporating available micro gas turbines and fuel cell: Matching considerations and performance evaluation. APPL ENERG 2013; 103: 607-617.
[16] Baudoin S, Vechiu L, Camblong H, Vinassa J, Barelli L. Sizing and control of a Solid Oxide Fuel Cell/Gas microturbine hybrid power system using a unique inverter for rural microgrid integration. APPL ENERG 2016; 176: 272-281.
[17] Paul Krause, Oleg Wasynczuk, Scott Sudhoff, Steven Pekarek, Analysis of electric machinery and drive systems. Wiley-IEEE Press, 2013.
[18] Miveh MR, Rahmat MF, Ghadimi AA, Mustafa MW. Control techniques for three-phase four-leg voltage source inverters in autonomous microgrids: A review. Renew Sust Energ Rev 2016; 54: 1592–1610.
[19] Shun Sang, Ning Gao, Xu Cai, and Rui Li. A Novel Power-Voltage Control Strategy for the Grid-Tied Inverter to Raise the Rated Power Injection Level in a Weak Grid. IEEE Journal of Emerging and Selected Topics in Power Electronics (Volume: PP, Issue: 99); 2017.
How to Cite
Asgharian, P., & Noroozian, R. (2019). Novel Load Following Controller of Microturbine Generation System for Stand-alone/Grid-connected Operation. Majlesi Journal of Electrical Engineering, 13(2), 83-90. Retrieved from