Hello,
Please find the uploaded two schematics in ‘PureSineInv.zip’:
[1] Sinewave inverter using a bridge to drive a two-winding linear transformer with no load and whose model include somehow its parasite LPF elements.
[2] Sinewave inverter using a push-pull drive for three-winding linear transformer (loaded) whose model doesn’t include its parasite LPF elements.
In vain, I tried tweaking the three-winding linear transformer to let it act as a LPF as done on the schematic [1].
I hope that someone can do it for me in any possible way or notify me that it cannot be done, at least for LTspice.
Your help will be much appreciated.
(In these days, I cannot afford building a push-pull inverter and its 3-winding transformer, even for 500W only, to find out that the PWM high frequency, about 16 KHz (Tpwm=64us), cannot be filtered out as it was done in the case of the full-bridge.)??
?
Best Regards,
Kerim
