I want to design AC-DC-AC topology in which i want to converter 1ph to 3 ph.my dc link voltage shall be 1000V and power rating upto 10KW. where the output of dc link is to drive three inverters
Your capacitance value depends on the change of energy during the application. This is in turn based on the calculation of minimum DC link voltage to be maintained and actual DC link voltage at the specified condition. There is a series of computations to be followed based on your defined problem or application. You can refer to Dr. Bhimsingh's power quality problems and mitigation (text book recent publication, from wiley) in which the computation process is clearly explained. You can also find all derivations related to this. Thank you.