PUBLICATIONS

This paper presents a new method to improve sensorless performance of matrix converter drives using a parameter estimation scheme.

To improve low-speed sensorless performance, the non-linearities of a matrix converter drive such as commutation delays, turn-on and

turn-off times of switching devices, 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 presented. 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.