Abstract
This paper presents a new and simple method for sensorless operation of matrix converter drives using a constant air-gap flux and the imaginary power flowing to the motor. 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 are modeled using PQR transformation and compensated using a reference current control scheme. The proposed compensation method is applied for high performance induction motor drives using a 3 kW matrix converter system. Experimental results are shown to illustrate the feasibility of the proposed strategy.
Original language | English |
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Journal | International Journal of Control, Automation and Systems |
Volume | 5 |
Issue number | 6 |
Pages (from-to) | 652-662 |
Number of pages | 11 |
ISSN | 1598-6446 |
Publication status | Published - 2007 |