I am working on power electronic converters. The problem is that there is a particular sequence of switch states for H-bridge. I am not able to understand where to use this sequence, in carrier wave or use any other triangular wave or what? e.g my sequence of is [1101, 1010, 0101, 1001, 0110] as 1st two bits are for 1st cell two switches (other two switches are complementary of these two) while last two bits are for 2nd cell two switches (other two switches are complementary). How do I manage the sequence of switch states while I have triangular (carrier) and sine waves (fundamental frequency)?
Dear Amir,
Are you working with a single phase frequency inverter ? If it's the case you could just use a triangular wave form as a carrier and use two sine waves opposite one of the other in 180º. Each of these sine waves can vary between 0 and 1.
One of the sine wave you use to the first leg of your H bridge converter and it's opposite you will use in the other leg.
The command sequence for the converter switches will be done naturally with the modulation.
Regards,
Leonardo
Dear Leonardo,
I am working with Multi-Level cascaded H-bridge inverter and having problem with level generation at each H-bridge cell
please send me an email at [email protected] to send back some papers to you. I usually do not use half sine wave in my modulation. the full sine wave is easier and works well.
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