Asynchronous motor nonlinear control with inverter output LC filter

J. Guzinski, H. Abu-Rub

Research output: Contribution to journalConference article


In many adjustable electric drives the LC filter is used to smooth the voltages and currents supplying AC motors. The LC filter makes it difficult to implement precise control of these motors especially in the case of speed sensorless solution. Because measuring motor currents and capacitor voltages is not practical, a preferable solution is to measure only filter input current. A good approach is to use observers to restore unmeasured state variables. Additionally, it is necessary to modify the used control in case of the drive with LC filter. In this paper the proposed system with nonlinear control method of the asynchronous motor, and the speed and flux observer structure were been adapted regarding the LC filter. In the presented drive only sensors previously used in the system without LC filter were used. 1.5kW drive was verified in by simulation and experiments.

Original languageEnglish
Pages (from-to)105-110
Number of pages6
JournalAIP Conference Proceedings
Publication statusPublished - 25 May 2009
Event2nd Mediterranean Conference on Intelligent Systems and Automation, CISA 2009 - Zarzis, Tunisia
Duration: 23 Mar 200925 Mar 2009



  • Asynchronous motor
  • Control
  • LC filter

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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