Buck Boost converter based Voltage Source Inverter using Space vector pulse width amplitude modulation

In this paper, a space vector pulse width amplitude modulation (SVPWAM) technique has been developed for a Buck-Boost Converter based voltage/ current source Inverter. The switching loss is reduced by 87%, compared to conventional sinusoidal pulse width modulation (SPWM) technique for a Voltage source Inverter, and the switching loss is reduced by 60% for Current source Inverter. The power density is increased by a factor of 2 to 3 in both cases. In addition it is also proved that the output harmonics distortion of SVPWAM is lower than SPWM, by using one third switching frequency of the latter one. The maximum overall system efficiency 96.7% has been achieved at full power rating .As a result ,it is economical to use SVPWAM to make the Buck-Boost converter based Inverter suitable for application that require high efficiency, high power density ,high temperature ,and low cost.