I want to design a single Z-source (impedance-network) inverter for an induction motor drive. But I am unable to design the values of capacitor and inductor for the Z-network.
Dear Abhijit,
you are working on a very interesting topology! Fortunatelly, you are not alone and you can build upon findings of your fellow researchers:
http://www.ornl.gov/~webworks/cppr/y2001/misc/124167.pdf
On page 16 of this manuscript you find formulae which can help you in finding suitabe values for the passives.
To design the passive elements L or C in ZSI, you can go through the book of power electronics by robert erickson. You will get the details of designing passive filter elements from the examples of dc-dc converters. Implement those fundamentals in ZSI. You will surely get the desired outcome.
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