Hybrid, open-loop excitation system for a wind turbine-driven stand-alone induction generator

Hybrid, open-loop excitation system for a wind turbine-driven stand-alone induction generator

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
IET Renewable Power Generation — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

This study proposes a hybrid, open-loop exciter for the wind turbine-driven induction generator for low power applications. The hybrid exciter comprises one set of fixed capacitor bank and a parallel connected three-phase fixed frequency pulse width modulation (PWM) inverter fed from a battery. This hybrid exciter inherently adapts to the changes in the rotor speed or load on the generator while maintaining a near constant voltage and frequency at the load terminals. The whole system including the PWM inverter is operated in an open loop, without the need for any sensors other than the low-speed cut-in and high-speed cut-out mechanisms on the wind turbine. Results from simulations and laboratory tests show that the dynamic reactive power compensation of the generator is inherent in the proposed open-loop system. The volt ampere (VA) rating of the inverter and the battery capacity can be minimal, depending only upon the speed and load ranges of the generator and the choice of fixed capacitor var.


    1. 1)
      • Hegde, R.K.: `A wind driven self excited induction generator with terminal voltage controller and protection circuits', IEEE Int. Conf. on Power Conversion, April 1993, p. 484–489.
    2. 2)
      • Murthy, S.S., Bhim, S.: `Capacitive var controllers for induction generators for autonomous power generation', IEEE Int. Conf. on Power Electronics, Drives and Energy Systems for Industrial Growth, January 1996, 2, p. 679–686.
    3. 3)
      • Mustafa, A.A.-S., Eui-Cheol, N., Thomas, A.L.: `Controlled shunt capacitor self-excited induction generator', IEEE Int. Conf. on Industry Applications, October 1998, 2, p. 1486–1490.
    4. 4)
    5. 5)
    6. 6)
      • Seyoum, D., Rahman, M.F., Grantham, C.: `Inverter supplied voltage control system for an isolated induction generator driven by a wind turbine', IEEE Int. Conf. on Industry Applications, October 2003, 1, p. 568–575.
    7. 7)
    8. 8)
    9. 9)
    10. 10)
    11. 11)
    12. 12)
    13. 13)
    14. 14)
      • Barrado, J.A., Robert, G., Hugo, V.: `Standalone self-excited induction generator with a three-phase four-wire active filter and energy storage system', IEEE Int. Symp. on Industrial Electronics, June 2007, p. 600–605.
    15. 15)
    16. 16)
      • Jayaramaiah, G.V., Fernandes, B.G.: `Novel voltage controller for stand-alone induction generator using PWM-VSI', IEEE Int. Conf. on Industry Applications, October 2006, 1, p. 204–208.
    17. 17)
    18. 18)
    19. 19)
    20. 20)
      • W. Leonhard . (1990) Control of electrical drives.
    21. 21)
      • P.C. Krause , O. Wasynczuk , S.D. Sudhoff . (2002) Analysis of electric machinery and drive systems.

Related content

This is a required field
Please enter a valid email address