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Reduced-order extended luenberger observer based sensorless vector control driven by matrix converter with nonlinearity compensation

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2 Author(s)
Kyo-Beum Lee ; Inst. of Energy Technol., Aalborg Univ., Aalborg East, Denmark ; Blaabjerg, F.

This paper presents a new sensorless vector control system for high-performance induction motor drives fed by a matrix converter with nonlinearity compensation. The nonlinear voltage distortion that is caused by commutation delay and ON-state voltage drop in the switching devices is corrected by a new matrix converter model. A reduced-order extended Luenberger observer is employed to bring better response in the whole speed operation range, and a method to select the observer gain is presented. Experimental results are shown to illustrate the performance of the proposed system.

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Industrial Electronics, IEEE Transactions on  (Volume:53 ,  Issue: 1 )