Space vector PWM method for two-phase three-leg inverters

In this paper, the space vector pulse width modulation (SVPWM) method is developed to control two-phase inverter with three legs. To implement in digital signal processors (DSP), the adjustability of switching sequences to reduce the harmonic contents of the output voltages and switching losses is very important. For this reason, the proposed control method is very suitable in comparison with the other modulation techniques that produce output voltages with variable frequency and magnitude. The proposed control scheme allows independent control of the magnitude and quadrature phase angle for two output phases. Thus, the presented two-phase inverter and its modulation scheme make the two-phase inverter commensurate with both balanced and unbalanced two-phase loads. Simulation results by using MATLAB/SIMULINK reconfirm the feasibility of the structure based on SVPWM method for the inverter.