Submit an Article
Become a reviewer
Vol 181
Pages:
115-122
Download volume:
RUS

Small speed asymptotic stability study of a speed vector control system for an induction motor that contains in its loop a Gopinath observer

Authors:
Olimpiu Stoicuta1
Nadia Stoicuta2
Teodor Pana3
About authors
  • 1 — University of Petrosani
  • 2 — University of Petrosani
  • 3 — Technical University of Cluj Napoca
Date submitted:
2008-08-25
Date accepted:
2008-10-24
Date published:
2009-03-20

Abstract

In this paper we analyze the asymptotic stability of a vector control system for an induction motor with short-circuited rotor that contains in its loop a Gopinath observer. The studied control system is based on the direct rotor flux orientation method (DFOC) and the stability study is based upon the linearization theorem around the equilibrium points of the control system, emphasizing the estimated variation domain of the rotor resistance for which the control system remains asymptotically stable when the prescribed speed of the control system is close to zero. The stability study is made in both the continual and discrete cases. The mathematical model of the vector regulating system is made using a value dle–qle linked to stator current. In order to mathematically describe the DFOC control system we will consider the following hypotheses: the static frequency converter (CSF) is assumed to contain a tension inverter; the static frequency converter is considered ideal so that the vector of the command measures is considered to be the entry vector of the induction motor; the dynamic measure transducers are considered ideal; the system and axis transformation blocks are considered dynamically ideal; the mathematical model of the vector control system will be written in an dle–qle axis reference bounded to the stator current.

Go to volume 181

References

  1. Voicu M. Tehnici de analiza a stabilitatii sistemelor automate. Editura Tehnica. Bucuresti, Romania, 1986.

Similar articles

Numerical simulations of continuous mining machine
2009 Adam Stachura, Damian Gasiorek
Use of stochastic models for hydrodynamic analysis of water intakes operation
2009 Yu. P. Starodubova
Research of influence of magnetic field on foaming properties of VKP reagent and flotation of graphite ore of different sites of Taiga deposit
2009 I. R. Masyagutova
Types of metasomatites of the Buruktalskoye deposit of hypergene nickel-lead ores, Southern Urals
2009 S. O. Ryzhkova
Reconstruction of vertical shaft of Uzelginsky mine
2009 D. E. Zhurov
Analysis of the system of state regulation of subsoil use
2009 A. S. Krasnaya