Hello sir.
I simulated demo model of simpowersystem.
Title is DC/DC and DC/AC PWM Converters
But It's something strange.
In first model Buck-boost converter. The duty is 0.8 in Pulse block properties
But Pulse block output is 0.9 duty ratio. It control half bridge.
Why is it different, If duty is 0.8, Output is 320V
Please check it.