Analysis of Center-Aligned Space Vector Pulse Width Modulation Realization for Three-Phase Vienna Rectifier

This paper presents a simplified the center- aligned space vector - pulse width modulation (SVPWM) technique for Vienna rectifier based on a three-level converter into a two-level converter. The method can generate the center aligned PMW easily by mapping the three-level space vector based on two-level space vector to create the dwelling time and switching sequence patterns. The D-Q control method is used to control the harmonics distortion of input current and dc-bus output voltage. A simulation model in Matlab/Simulink and a experiment with DSP-controlled, 1-kW, Viennna-type rectifier are used to verify the proposed method. Analytical, simulated, and experimental results agree well with each other. Experimental waveforms confirm the effectiveness of the presented method for Vienna-type rectifier control system. The results show that the total harmonics distortion of input current is 2.64% and the power factor is 0.99. Moreover, the dc-bus out voltage is regulated at 500 Vdc at the rated power.