A new sliding mode flux and current observer for direct field oriented induction motor drives


Inanc N.

ELECTRIC POWER SYSTEMS RESEARCH, cilt.63, ss.113-118, 2002 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 63 Konu: 2
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0378-7796(02)00084-6
  • Dergi Adı: ELECTRIC POWER SYSTEMS RESEARCH
  • Sayfa Sayıları: ss.113-118

Özet

A direct field orientation (DFO) control for an induction machine is designed and implemented using a new sliding mode technique. The rotor flux is estimated using the current model flux observer. A close loop flux observer, based on the current estimate error, is then constructed. A unique feature of the proposed observer is that the flux and current observers include a sliding function, which is a derivative of the flux. Therefore, when the estimated current converges to the measured one, the sliding function itself is integrated to calculate the flux magnitude and angle. The observer stability is verified via Lyapunov stability analysis. Simulation and experimental results are presented to show the performance of sliding-mode based DFO control for an induction motor drive system. (C) 2002 Elsevier Science B.V. All rights reserved.