Hi everyone
I hope you could help me to find the problem with my simulation. I'm trying to simulate an high frequency inverter I'm building for my final year project.
The input frequency would be 500kHz, received from an Arduino and is isolated by the HPCL2530 (not the one used in the simulation since it is not available in multisim). I have not installed the Arduino libraries so I used a block wave generator for the Arduino output. Then I used the IRF1404Z MOSFETs for the switching and then fed to the transformer. Ignore the resistance I only added it to load the transformer. I used the transformer ratings based on the MTPL-2516 Series transformer (12V).
The circuit failed when I connected the MOSFETs. I disconnected the MOSFETs and it worked 100% up to the point the MOSFETs would connect. I decreased the frequency to 50Hz and still no success. Then I decrease the frequency to 0.5Hz and it worked. I thought the MOSFET could not handle the frequency although 50Hz is very low so I tried the IRF840L and it still did not work.
I simulated the circuit on Proteus and it worked fine (the PWM was done using the UC3525 regulating pulse width modulator). But would love to fic the problem in multisim as it is free and I can save the projects. I also removed the optoisloator but had no success.
I will attach the circuit diagram below. Thanks in advance.
