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   DTC using Matrix Converters: Improvement of the Input Line Current   [View] 
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 Author(s)   D. Casadei; M. Matteini; G. Serra; A. Tani; F. Blaabjerg 
 Abstract   In this paper a new control method that allows the application of matrix converters in Direct Torque Control (DTC) of induction machines is presented. Thanks to the matrix converter topology, this control method allows, under the constraint of unity input power factor, the generation of the voltage vectors required to implement the direct torque control of induction machines. Despite of the major complexity of the matrix converter structure compared to traditional Voltage Source Inverters (VSI), the proposed control algorithm is simple and robust. The appropriate switching configuration of the matrix converter is selected using a switching table defined on the basis of three hysteresis controllers applied to stator flux, electromagnetic torque and input power factor. Numerical and experimental results are carried out and analysed, showing the feasibility of the proposed drive system. Finally, a modified control strategy for the input power factor that reduces the harmonic content of the input line current is proposed and verified by numerical simulations. 
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Filename:EPE2001 - PP00949 - Casadei.pdf
Filesize:203.8 KB
 Type   Members Only 
 Date   Last modified 2004-03-15 by System