Title :
New modulation method for matrix converters
Author :
Klumpner, Christian ; Blaabjerg, Frede ; Boldea, Ion ; Nielsen, Peter
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Nottingham, UK
Abstract :
This paper presents a new modulation method for matrix converters based on the indirect modulation model. During the switching period, the proposed modulation method uses a combination of only one active vector and a zero vector in the inversion stage to achieve minimum flux error, whereas in the rectification stage, a single current vector is selected according to the angle error of the input current vector. This reduces the number of switching states in the switching period, which improves the accuracy of generating the reference output voltage vector, especially in the low-modulation-index range. In addition, closed-loop control of the input current vector is achieved. The input currents are not measured but are estimated by applying inverse transformation to the measured output currents using the matrix associated with the chosen active switching state.
Keywords :
matrix convertors; switching convertors; active vector; closed-loop control; indirect modulation model; input current vector; inverse transformation; matrix converters; modulation method; rectification; reference output voltage; zero vector; Commutation; Current measurement; Industry Applications Society; Matrix converters; Pulse width modulation; Space vector pulse width modulation; Support vector machines; Switches; Torque control; Voltage control; Direct torque control (DTC); induction motor drive; matrix converter; space-vector modulation (SVM);
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2006.872957