I know about inverters is as follows (correct me if I am wrong) DC source such as battery fed current into transformer by controlled switches such as mosfet or IGBT. This controlled current fed into primary side of step up transformer. While the control circuit modulate the high frequency carrier wave and referance sine wave. By modulating we get gate signals as follow.
Using fullbridge we converte DC waveform into single sine wave PWM signal. And when fedding it to primary winding of inverter we use LC low pass filter and use filter also on output(I read on research paper but not sure).
Ok my question is:
How to filter this PWM sine wave into sine wave? Does LC filter do the job?
This inverter circuit I explain here is seems much simple than commercial inverter. Am I missing anything?
Does output waveform change if load varies?
Correction and suggestions are welcome for question. Thank you.