Implementation of Direct Matrix Converter using hybrid modulation with minimized losses

This paper presents the modulation technique for controlling the input current through Space Vector Modulation and the output voltage through Generalized Scalar Pulse width Modulation(GSPWM) of a Direct Matrix Converter hence emulating the advantages of both the techniques simultaneously and named hybrid modulation for controlling the switching pulses of the same. Since, the requirement of gate drivers in Indirect Matrix Converter (IMC) increases from nine to twelve as compared to direct Matrix Converter that apparently makes the system bulky and increases the switching losses. If the proposed technique is used for the direct Matrix Converter, the requirement of switches and in turn the losses are reduced up to twenty percent. Apart from that, the input power factor is also efficiently improved with the proposed modulation technique. And also the effect of over modulation up to the certain limit and its advantages are observed. Simulation results show the effectiveness and efficiency of the proposed technique.