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Park vector based sliding mode control of UPS with unbalanced and nonlinear load

  • Péter Korondi
  • Hideki Hashimoto
Chapter
Part of the Lecture Notes in Control and Information Sciences book series (LNCIS, volume 247)

Abstract

The main contribution of this chapter is a new Park vector based variable structure control (VSC) method. In this chapter an inverter is taken to be a member of Variable Structure Multy Imput Multy Output System.

The design of a sliding mode controller consists of two main steps. Firstly, the design of the sliding surface, secondly, the design of the control law which holds the system trajectory on the sliding surface. Here a complex (Park vector based) sliding surface is proposed. The distance of the system state from the complex sliding surface measured by a complex vector. The inverter is switched in such a way that the system trajectory gets as close to the sliding surface as possible. In other words the complex distant vector should be decreased. This chapter focuses on the switching rule. Two switching strategies are compared. In the first approach, sliding mode exists only in the intersection of the switching surfaces. In the second approach a stable sliding mode may exist on any of the switching surfaces independently.

A modified definition of the Park vector is introduced to handle the effect of zero phase-sequence component caused by an asymmetrical load. Experimental results of a 100 KVA inverter are presented.

Keywords

Slide Mode Control Switching State Switching Strategy Total Harmonic Distortion System Trajectory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Holtz J. (1992): Pulsewith Modulation — A Survey IEEE Trans. on Industrial Electronics vol. IE-39 no.5 pp. 410–420.CrossRefGoogle Scholar
  2. 2.
    Kawamura, A.;Hoft, R.: Instantaneous Feedback Controlled PWM Inverter with Adaptive Hysteresis IEEE Trans. on Industrial Application Vol. IA-20, no. pp. 769–775.Google Scholar
  3. 3.
    Kawamura, A.;Yokoyama, T.(1991): Comparison Five Control Methods for Digitally Feedback Controlled PWM Inverters 4th European Conference on Power Electronics, Firenze Proc. Vol. 2. pp. 35–40.Google Scholar
  4. 4.
    Utkin V.I.(1993). Variable Structure Control Optimalization, Springer-Verlag.Google Scholar
  5. 5.
    Sabanovic, A.;Bilalovic, F.(1989):Sliding Mode Control of AC Drives IEEE Trans. on Industrial Application, Vol. IA-25, no. 1, pp. 70–75.CrossRefGoogle Scholar
  6. 6.
    Jardan, K.R., Dewan, S.B., Slemon, G.R.(1969). “General Analysis of Three-Phase Inverters” em IEEE Trans. on Industry and General Applications. IGA-5, No.6,pp.672–679.CrossRefGoogle Scholar
  7. 7.
    Korondi, P. Nagy, L. Nemeth, G.(1991) “Control of a three phase ups inverter with unbalanced and nonlinear load” 4th European Conference on Power Electronics Firenze, vol. 3. pp. 3–180–3–184.Google Scholar
  8. 8.
    Korondi,P.(1993):“Comparison of two types of tolerance band controlled converters” IEEE ISIE'93 Budapest, Proc. pp.128–133Google Scholar
  9. 9.
    Nabae A. Ogaswara S. Akagi H.(1985) “A novel control scheme of current controlled PWM inverter” IEEE Conf. Record of Industry Applications Society 1985. 473–477.Google Scholar
  10. 10.
    Nagy,I.(1993) “Control of bi-directional power conversion” IEEE ISIE'93 Budapest Vol. pp.176–182Google Scholar
  11. 11.
    Nagy, I.(1994) Novel Adaptive Tolerance Band Based PWM for Field-Orientated Control of Induction Machines IEEE Trans. on Industrial Electronics vol. IE-41Google Scholar
  12. 12.
    Korondi,P.; Yang,S-H.; Hashimoto,H.; Harashima,F.(1994):Pulse Modulated Variable Structure System Controller for Parallel Resonant Dual Converter IEE Japan Ann. Meeting Google Scholar
  13. 13.
    Retter,Gy.: Matrix and space phasor theory of electrical machines, Akademia Kiado, Budapest, 1987.Google Scholar

Copyright information

© Springer-Verlag 1999

Authors and Affiliations

  • Péter Korondi
    • 1
  • Hideki Hashimoto
    • 2
  1. 1.Department of AutomationTechnical University of BudapestHungary
  2. 2.University of TokyoInstitute of Industrial ScienceTokyoJapan

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