Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
권호 표지

H-Bridge VSC with a T-Connected Transformer for a 3-Phase 4- Wire Voltage and Frequency Controller of an Isolated Asynchronous Generator

  • Published : 2009.01.20
Download PDF
⟨ Previous Next ⟩

Abstract

This paper deals with a novel solid state controller (NSSC) for an isolated asynchronous generator (IAG) feeding 3-phase 4-wire loads driven by constant power prime movers, such as uncontrolled pico hydro turbines. AC capacitor banks are used to meet the reactive power requirement of the asynchronous generator. The proposed NSSC is realized using a set of IGBTs (Insulated gate bipolar junction transistors) based current controlled 2-leg voltage source converters (CC- VSC) and a DC chopper at its DC bus, which keeps the generated voltage and frequency constant in spite of changes in consumer loads. The neutral point of the load is created using aT-configuration of the transformers. The IAG system is modeled in MATLAB along with Simulink and PSB (power system block set) toolboxes. The simulated results are presented to demonstrate the capability of the isolated generating system consisting of NSSC and IAG driven by uncontrolled pico hydro turbine and feeding 3-phase 4-wire loads.

Keywords

References

  1. L.L. Lai and T.F. Chan, "Distributed Generation -Induction and Permanent Magnet Generators", John Wiley and Sons Ltd, Chichester, UK, 2007
  2. M. Godoy Simoes and Felix A. Farret, "Alternative Energy Systems", CRC Press Florida, 2008
  3. Ion Boldea, "Variable Speed Generators", CRC Press, Florida 2006
  4. R.C. Bansal, "Three phase self excited induction generators: an overview", IEEE Trans. on Energy Conversion, Vol 20, No.2, pp. 292-299, June 2005 https://doi.org/10.1109/TEC.2004.842395
  5. E. Suarez and G. Bortolotto, "Voltage - frequency control of a self excited induction generator", IEEE Trans Energy Convers, Vol. 14, No.3 pp.394-401, Sept. 1999 https://doi.org/10.1109/60.790888
  6. T.F. Chan, K.A. Nigim and L.L.Lai, "Voltage and frequency control of self excited slip ring induction generators", IEEE Trans. on Energy Conversion, Vol. 19, No.1, pp. 81-87, March 2004 https://doi.org/10.1109/TEC.2003.821860
  7. B. Singh, S.S. Murthy and S. Gupta, "Analysis and implementation of an electronic load controller for a self-excited induction generator", lEE Proceedings - Generation Transmission and Distribution, Vol 151, No.1, pp.5l-60, Jan.2004
  8. R. Bonert and S. Rajakaruna, "Self-excited induction generator with excellent voltage and frequency control", lEE Proc.-Gener. Transm. Distrib., Vol. 145, No.1, pp. 33-39, January 1998 https://doi.org/10.1049/ip-gtd:19981680
  9. I. Tamrakar, L. B. Shilpkar, B. G. Fernandes and R. Nilsen, "Voltage and frequency control of parallel operated synchronous generator and induction generator with STATCOM in micro hydro scheme", Proc lET -Gener. Transm. Distrib, Vol.1, No.5, pp 743-750, Sept. 2007 https://doi.org/10.1049/iet-gtd:20060385
  10. J.M. Ramirez, Emmanuel. and M Torres, "An Electronic Load Controller for the Self-Excited Induction Generator", IEEE Transactions on Energy Conversion, Vol. 22, No.2, pp 546- 548, June 2007 https://doi.org/10.1109/TEC.2007.895392
  11. B. Singh, S.S. Murthy and S. Gupta, "An electronic voltage and frequency controller for single-phase self-excited induction generators for pico hydro applications", in Proc of IEEE Sixth International Conf on Power Electronics and Drive Systems (PEDS' 05), pp 240-245, 2005
  12. Gaurav Kumar Kasal and Bhim Singh, "Decoupled voltage and frequency controller for isolated asynchronous generator supplying 3-phase 4-wire loads", IEEE Trans. on Power Delivery, Vol.23, No.2, pp. 966-973, April 2008 https://doi.org/10.1109/TPWRD.2008.915783
  13. J. A. Barrado, R. Grino and Hugo Valderrama, "Standalone Self-Excited Induction Generator with a Three-Phase Four-Wire Active Filter and Energy Storage System," in Proc. of IEEE International Symposium on Industrial Electronics(ISIE'07), Vigo, Spain, pp. 600-605, June 2-5, 2007
  14. Bhim Singh, Vipin Garg, and G. Bhuvaneswari, "A novel T-connected autotransformer-based 18-pulse AC-DC converter for harmonic mitigation in adjustable-speed induction-motor drives", IEEE Transactions on Industrial Electronics, Vol. 54, No.5, pp. 2500-2511, Oct. 2007 https://doi.org/10.1109/TIE.2007.900332
  15. IEEE Guide for Harmonic Control and Reactive Compensation of Static Power Converters, IEEE Standard 519-1992