I have disassembled a "Chinese" power inverter, I found a High-Frequency Transformer, with no label on it.
I would like to make an inverter using this transformer to generate the High voltage to feed into a full bridge to make a pure/modified sine wave inverter.
I "I reversed engineered" the inverter, I found that the transformer was driven in the following way(using center tapped transformer instead of a full bridge):
The question is, how I can calculate the best/optimal switching frequency for this HF transformer, assuming I can measure its resistance and inductance?
I need to know where the core saturates and then apply the reverse of V=4.44*N1*f*Bmax?
How the switching frequency will impact the performance(voltage ripple, idle current, losses)?
How PWM modes(Center aligned vs edge aligned ) will impact performances, assuming that both MOSFETs will be driven with the same duty cycle(regulated by a PID / PD loop on output voltage), but 90 degrees apart?
And I need to put flyback diodes in parallel with the n-MOS?
Thanks in advance.