Of course your resonant caps get hot they have a lot of current and a lot of AC voltage, what is the DF for your cap ? what is the peak DC & AC voltage rating at the frequency you are using ?
Watts ( heat ) in the res cap = Vac x Iac x DF, so for 100Vac and 5A ac and DF = 1% the heat will be 5W
quite a lot for a cap that is not designed for an heavy duty AC application at higher frequencies ....
After modifying the PCB according to your suggestion, the waveform got a lot better. This is the waveform when the circuit works at 2kW. Thank you for your valuable information.
Of course your resonant caps get hot they have a lot of current and a lot of AC voltage, what is the DF for your cap ? what is the peak DC & AC voltage rating at the frequency you are using ?
Watts ( heat ) in the res cap = Vac x Iac x DF, so for 100Vac and 5A ac and DF = 1% the heat will be 5W
quite a lot for a cap that is not designed for an heavy duty AC application at higher frequencies ....
Oh - OK - the resonant inductor - yes these require expert design due to skin effect, proximity effect and core losses at higher frequencies and of course losses if you run the peak B too high
glad to see you are making some progress . . . . !
It would be nice if you could re-pay the group and list all of the exact changes you made that allowed your converter to run correctly - it would allow others to learn also - which is how the group continues . . .
Hi guys, I am doing the bidirectional power switch. I am wondering if could I use the same gate driver and the same gate resistor for both N-channel Mosfet as in the picture below, or do I need to separate them?
Hi guys, is there any way to turn on/off a GPIO signal at the dead-time period of PWM? I used the ePWM event trigger of TI DSP 28335, but it seems it doesn't work well.