In a single-phase uncontrolled rectifier fed VSI driven three-phase induction motor, the dc-link voltage reduces under loading condition of induction motor drive. How to select the optimum value of the dc-link capacitor to maintain the dc-link voltage constant over the entire range of the induction motor?
https://ec.kemet.com/blog/dc-link-design-tips/#:~:text=Other%20considerations%20in%20choosing%20a,is%20steady%2Dstate%20or%20intermittent.
Pl go through the link which I provided above once to get better understanding
https://core.ac.uk/download/pdf/147124082.pdf
http://www.emic-bg.org/files/Electric_Motors___Drives.pdf
Deponed on the application the load's current and Ripple factor determine how to calculate the capacitance. However, as the capacitance increases, there is a need for an extra circuit to surviving of transient capacitor current.
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