Title :
Performance Improvement of Sensorless Vector Control for Matrix Converter Drives Using PQR Transformation
Author :
Lee, Kyo-Beum ; Blaabjerg, Frede
Author_Institution :
Inst. of Energy Technol., Aalborg Univ.
Abstract :
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
Keywords :
control nonlinearities; electric current control; induction motor drives; machine vector control; matrix algebra; matrix convertors; switching convertors; 3 kW; PQR transformation; commutation delay; current distortion elimination; induction motor drives; matrix converter drives; reference current control scheme; sensorless vector control; speed sensor; voltage drop; Commutation; Current control; Delay; Induction motor drives; Machine vector control; Matrix converters; Power grids; Power quality; Sensorless control; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th
Conference_Location :
Recife
Print_ISBN :
0-7803-9033-4
DOI :
10.1109/PESC.2005.1581969