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An efficient single-phase ac-to-ac buck and boost matrix converter

In this research, an efficient direct ac-to-ac matrix converter bucking and boosting both the magnitude and frequency of the output voltage is proposed. The proposed switching converter accomplishes both the non-inverting buck and boost, and the inverting buck and boost operations separately. For accomplishing ac-to-ac conversion, lesser number of PWM controlled switches are employed. This reduces the switching losses, thus enhances the switching converter efficiency. This also reduces the complexity of the control circuit. MATLAB/Simulink environment is used to support the analysis of the proposed switching converter.