Abstract—This paper presents an effect of power factor control loop at rectifier unit, placed in between, Self excited induction generator and grid along with the inverter. The power factor control scheme does not require any system parameters, such as the values of the line inductance or filter capacitor. Variations in the line inductance due to the power system operation or the changes in filter capacitor size do not affect the process of tracking unity or maximum power factor. The main objective of this paper is to track the maximum power of the grid connected SEIG driven by wind turbine and to reduce the ripples in power factor, active and reactive power at the grid. In previous literature there is no discussion about the improvement and reduction of ripples in the power factor at the grid. The variable magnitude, variable frequency, voltage of the generator can be controlled by the proper modulation index. By controlling both modulation index and delay angle simultaneously, the rectifier can potentially achieve unity power factor operation while its dc current can also be controlled. The results are valid through MATLAB/SIMULINK software.
Index Terms—Self Excited Induction Generator (SEIG), Wind turbine, Hybrid nine level inverter, Voltage source rectifier, Grid, Power factor loop.
Swati Devabhaktuni is with the Department of electrical and electronic engineering, Gokaraju Rangaraju college of engineering, Hyderabad, India (e-mail:swatikjm@gmail.com).
S.V.Jayaram kumar is the professor, J. N. T. University, Hyderabad, India (e-mail:svjkumar101@rediffmail.com).
[PDF]
Cite: Swati Devabhaktuni and S. V. Jayaram Kumar, "Impact of Power Factor Control Loop at Rectifier Unit on Wind Turbine Driven Self-Excited Induction Generator Connected to Grid," International Journal of Engineering and Technology vol. 3, no. 6, pp. 651-657, 2011.
