Kyo-Beum Lee and Frede Blaabjerg, “Reduced-Order Extended Luenberger Observer Based Sensorless Vector Control Driven by Matrix Converter With Nonlinearity Compensation,” IEEE Transactions on Industrial Electronics, vol. 53, no. 1, pp. 66–75, Feb. 2006. -S > Paper

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.