8.14 SIMULATION OF PULSE-WIDTH-MODULATED
INVERTERS
Bipolar PWM
PSpice can be used to simulate the PWM inverter switching schemes presented
previously in this chapter. As with other power electronics circuits, the level of
circuit detail depends on the objective of the simulation. If only the voltages and
currents in the load are desired, a PWM source may be created without modeling
the individual switches in the bridge circuit. Figure 8-23 shows two ways to produce
a bipolar PWM voltage. The first uses an ABM2 block, and the second uses