I simulated the circuit in example 2.2 of Muhammad Rashid's Spice for Power Electronics and Electric Power. The Schematics file ran without any problems but the circuit description on PSpice A/D is throwing up floating circuit error. Help needed.
Verify that you are using the right GND symbol at node 0. PSpice has different GND symbols, not all are connected to actual circuit ground. In case of doubt review the generated netlist.