Some python scripts to help simulate an ideal PWM bipolar inverter. inverter.py allows for the basic control, triangle and output PWM to be observed or optionally just the FFT of the PWM. overmodulation.py is set up so that the amplitude modulation ratio can be tweaked and the effects of overmodulation observed.
These aren't great quality at the minute but I will update them to a usable state soon and add a unipolar mode too!