the load is a resistive load RWhat is the load in the sim ? [ really the more information you supply the better able the skilled people on this forum can give insightful answers - if you give little to no information - you may get the same in return ]
no it is cascaded 5 levelYour circuit appears to be a cousin of the 5-level diode-clamped inverter. This is my simulation for comparison. Gating signals are generated via window comparators, analog fashion. Eight switches are used for simplicity. Typical waveforms are shown.
The diodes come into use especially with an inductive load. They act as freewheeling diodes, absorbing inductive spikes.
View attachment 170268
thanks, could you please tell me what is missing?Just echoing FvM's statements - you have provided so little information that it is near impossible to make any sort of educated suggestion
ok, I will delete it.pretty much everything is missing
so here my question is what the expected problem may prevent me to get 5 levels with hardware as in the simulation part?is there a question here ?
The isolated Gate Driver that I used is Si8275GBD and feed it by 5V from the microcontroller and 12 v supply from the dc supply. My goal is just to get at the oscilloscope 5 level wave as in the simulation.As asked previously, give a detailed description of the lab hardware setup. E.g. how are the isolated power supplies implemented?
A first small piece of information. The question is also about 6-fold 12V gate driver supply and 2-fold DC bus supply. What kind of supply? What's the capacitance of each power supply against ground?The isolated Gate Driver that I used is Si8275GBD and feed it by 5V from the microcontroller and 12 v supply from the dc supply.
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