Hi Zeeshan,
As per my understanding, you want to make an equivalent circuit for MMC full and half bridge bipolar. And to make the same you need the involved mathematical equations that define the system. You will use those mathematical relations to recreate the MMC full and half bridge bipolar.
I have found a research article that derives and discusses modeling MMC for fast and accurate simulation of electromagnetic transients.
Have a look at the introduction and converter system section to understand the full and half bridge MMC in mathematical terms. You shall extend the approach to define and model any other MMC full and half bridge bipolar.
I hope this was helpful.
Regards,
Shivam Lahoti.
