Kyo-Beum Lee and Frede Blaabjerg, “Improved Sensorless Vector Control for Induction Motor Drives Fed by a Matrix Converter Using Nonlinear Modeling and Disturbance Observer,” IEEE Transactions on Energy Conversion, vol. 21, no. 1, pp. 52–59, Mar. 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 and disturbance observer. The nonlinear voltage distortion that is caused by commutation delay

and on-state voltage drop in switching device is corrected by a new matrix converter modeling. The lumped disturbances such as

parameter variation and load disturbance of the system are estimated by the radial basis function network (RBFN). An adaptive

observer is also employed to bring better responses at the low speed operation. Experimental results are shown to illustrate the

performance of the proposed system.