Kyo-Beum Lee and Frede Blaabjerg, “Performance improvement of sensorless vector control for matrix converter drives using PQR power theory,” Electrical Engineering, vol. 89, no. 8 pp. 607–616, Sep. 2007. -SCI > Paper

This paper presents a new method to improve sensorless performance of matrix converter drives using PQR power transformation.

The non-linearity of matrix converter drives such as commutation delay, turn-on and turn-off time of switching device, and on-

state switching device voltage drop is modelled using PQR transformation and compensated using a reference current control

scheme. To eliminate the input current distortion due to the input voltage unbalance, a simple method using PQR transformation

is also proposed. The proposed compensation method is applied for high performance induction motor drives using a 3 kW matrix

converter system without a speed sensor. Experimental results are shown to illustrate the feasibility of the proposed strategy.