Pure Sine Wave Inverter
Block Diagram & Schematic
The inverter will converts 12 Volt dc from battery into 110 Volt ac, 50 Hz, sine
wave.the block dagram and schemnatic circuit of the inverter are shown in file Pulse train as shown in figures 5 is produced interchangeably from port (A)
and port (B) by microcontroller 89S2051 during the positive half and negative half of the sine wave. The pulse train is then inputted to the MOSFET power switching
circuit, which is next directed to the primary side of the transformer. Output of the secondary side is shown in Figure 6, which then be filtered resulting in the sine wave as seen in figure 7, where amplitude attenuation can reach up to 50%. Measured inverter output THD reaches 5-8%, where the largest harmonics appeared to be the second and third harmonics as shown in figure 8
Pure Sine Wave Inverter
Pure Sine Wave Inverter
