Performance improvement of three-phase self-excited induction generator feeding induction motor load
In this paper, the transient and steady-state performances of an isolated self-excited induction generator driven by a wind turbine and feeding power to a dynamic load such as a three-phase induction motor are analyzed. Mathematical modeling and simulation study of the whole system, including the wind turbine, induction generator, capacitor, pulse width modulated voltage source inverter, and dynamic load, are carried out with closed-loop voltage and frequency controller. The complete system is modeled in the stationary $d-q$ frame and validated by comparing simulation and experimental results at no-load. The same mathematical model is then used to study the transient performance of the self-excited induction generator supplying to a dynamic load. When the induction motor is connected to the induction generator without any voltage and frequency controller, it causes severe transients in electrical and mechanical variables of the generator. Due to the large starting-current requirement of the induction motor, there is a collapse of the terminal voltage of the generator. A bidirectional pulse width modulated source inverter with DC link battery is connected with the generator and operated in closed-loop control mode to maintain voltage and frequency and to operate the induction motor successfully with variable wind speed and mechanical load.
Performance improvement of three-phase self-excited induction generator feeding induction motor load
In this paper, the transient and steady-state performances of an isolated self-excited induction generator driven by a wind turbine and feeding power to a dynamic load such as a three-phase induction motor are analyzed. Mathematical modeling and simulation study of the whole system, including the wind turbine, induction generator, capacitor, pulse width modulated voltage source inverter, and dynamic load, are carried out with closed-loop voltage and frequency controller. The complete system is modeled in the stationary $d-q$ frame and validated by comparing simulation and experimental results at no-load. The same mathematical model is then used to study the transient performance of the self-excited induction generator supplying to a dynamic load. When the induction motor is connected to the induction generator without any voltage and frequency controller, it causes severe transients in electrical and mechanical variables of the generator. Due to the large starting-current requirement of the induction motor, there is a collapse of the terminal voltage of the generator. A bidirectional pulse width modulated source inverter with DC link battery is connected with the generator and operated in closed-loop control mode to maintain voltage and frequency and to operate the induction motor successfully with variable wind speed and mechanical load.
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- Rahim AH, Alam MA, Kadlawala MF. Dynamic performance improvement of an isolated wind turbine induction generator. Comput Electr Eng 2009; 35: 594–607.
- Seyoum D, Grantham C, Rahman MF. The dynamic characteristics of an isolated generator driven by a wind turbine. IEEE T Ind Appl 2003; 39: 936–944.
- Murthy SS, Malik OP, Tandon AK. Analysis of self-excited induction generators. IEE Proc-C 1982; 129: 260–265.
- Lopes LAC, Almedia RG. Wind driven self-excited induction generator with voltage and frequency regulated by a reduced rating voltage source inverter. IEEE T Energy Conver 2006; 21: 297–304.
- Geng H, Xu D, Wuare B. Direct voltage control for a stand-alone wind-driven self-excited induction generator with improved power quality. IEEE T Power Electr 2011; 26: 632–641.
- Kassem AM. Robust voltage control of a stand alone wind energy conversion system based on functional mode predictive approach. Int J Elec Power 2012; 41: 124–132.
- Deraz SA, Kader FEA. A new control strategy for a stand-alone self-excited induction generator driven by a variable speed wind turbine. Renew Energ 2013; 51: 263–273.
- Palwalia DK, Singh SP. Digital signal processor based fuzzy voltage and frequency regulator for self-excited induction generator. Electr Pow Comp Sys 2010; 38: 309–324.
- Pucci M, Cirrincione M, Lee H. Neural MPPT control of wind generators with induction machines without speed sensors. IEEE T Ind Electron 2011; 58: 37–47.
- Wang L, Lee CH. Long shunt and short shunt connections on dynamic performance of a SEIG feeding an induction motor load. IEEE T Energy Conver 2000; 15: 602–608.
- Singh SP, Jain SK, Sharma J. Voltage regulation optimization of compensated self-excited induction generator with dynamic load. IEEE T Energy Conver 2004; 19: 724–732.
- Singh B, Singh M. Transient performance of series compensated three phase self excited induction generator feeding dynamic loads. IEEE T Energy Conver 2010; 46: 1271–1280.
- Chauhan YK, Jain SK, Singh B. Operating performance of static series compensated three-phase self-excited induction generator. Int J Elec Power 2013; 49: 137–148.
- Perumal BV, Chatterjee JK. Voltage and frequency control of a standalone brushless wind electric generation using generalized impedance controller. IEEE T Energy Conver 2008; 23: 622–640.
- Krause PC. Analysis of Electric Machinery. New York, NY, USA: McGraw Hill, 1987.
- Idjdarene K, Rekioua D, Rekioua T, Tounzi A. Performance of an isolated induction generator under unbalanced loads. IEEE T Energy Conver 2010; 25: 303–311.
- Dalei J, Mohanty KB. A novel method to determine minimum capacitance of the self-excited induction generator. In: IEEE Tech Symposium; 28 February– 2 March 2014; Kharagpur, India; pp. 408–413.
- Jain SK, Sharma JD, Singh SP. Transient performance of three-phase self excited induction generator during balanced and unbalanced faults. IEE Proc-C 2002; 149: 50–57.