H2 robust digital vector control for the induction machine

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H2 robust digital vector control for the induction machine

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Using a discrete time-variant state-space model for the induction machine, the authors consider the plant variations as being uncertainties represented by polytopes. In addition, an alternative scheme of vector control is proposed for digital control of the induction machine. This scheme involves treatment of the machine equations in state space and the acquisition of a robust state-feedback gain by an H2 convex optimisation method.

Inspec keywords: asynchronous machines; robust control; machine control; optimisation; digital control; state feedback; discrete systems; state-space methods

Other keywords: H2 robust digital vector control; H2 convex optimisation method; robust state-feedback gain; induction machine; discrete time-variant state-space model; state space

Subjects: Discrete control systems; Optimisation techniques; Asynchronous machines; Optimisation techniques; Control system analysis and synthesis methods; Stability in control theory; Control of electric power systems

References

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      • Milfont, A.S., Augusto Filho, S.A., Geromel, J.C.: `H2 robust control design with regional pole placement for discrete-timelinear systems', Proceedings of European Control conference–ECC95, 1995, 4, p. 3388–3393.
    2. 2)
      • J.C. Geromel , P.L.D. Peres , S.R. Souza . H2 guaranteed cost control for uncertain discrete-time linear systems. Int. J. Control , 4 , 853 - 864
    3. 3)
      • C.P. Bottura , J.L. Silvino , P. Resende . A flux observer for induction machines based on a time-variant discretemodel. IEEE Trans. Ind. Appl. , 2 , 349 - 354
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      • F. Blaschke . The principle of field orientation as applied to the new transvector closed-loop control system for rotating field machines. Siemens Rev. , 3 , 217 - 220
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      • Silvino, J.L.: `Modelamento e observador discreto não estacionário para máquinade indução', 1992, PhD, UNICAMP, FEE.
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