I'm trying to simulate an entire 1kW wind power system in PSpice with a battery charger and DC to AC power inverter. So far I've simulated the entire system up to the voltage regulator and batter charger, but I can't find a circuit diagram anywhere for a true sine wave inverter. Please can someone help me find a circuit diagram (or even better a PSpice file) of a true sine wave power inverter. The specs are: 24Vdc input, 120Vac output with a max current of about 20amps. Thanks!