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Mathematical Problems in Engineering
Volume 2016 (2016), Article ID 6086497, 10 pages
Research Article

Carrier-Based PWM Method to Reduce Common-Mode Voltage of Three-to-Five-Phase Indirect Matrix Converter

1School of Electrical Engineering, Northeast Dianli University, Jilin 132012, China
2State Grid Jilin Electric Power Supply Company, Changchun 130000, China
3State Grid Jilin Electric Power Supply Company, Jilin 132000, China

Received 11 July 2016; Revised 9 October 2016; Accepted 20 October 2016

Academic Editor: Stefan Balint

Copyright © 2016 Rutian Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In order to reduce the common-mode voltage (CMV) for three-to-five-phase indirect matrix converter (IMC), the CMV with the conventional modulation strategy is analyzed. A novel carrier-based PWM (CBPWM) method is proposed in this paper. The zero vectors in the inverter stage are assigned to the rectifier stage, equivalently, which are not considered in the inverter stage. The zero vectors are selected appropriately to ensure that the dc-link is connected to an input phase with the minimum absolute value, so that the larger CMV can be avoided. Then, the modulation signals are derived by the duty ratios, which are used to compare with the only one carrier signal and generate the gate pulses of switches. With the proposed method, the CMV is reduced effectively compared with the conventional modulation strategy. This method is analyzed and researched with a simulation model established by Matlab/Simulink. Simulation results are provided in detail to verify the feasibility and validity of the proposed method.