Design of Control Power Supply Using Ultra-capacitor

High power converters are used in drive applications. The control power supply needs to ensure that any glitch in the grid side does not affect any of control circuit boards. The project gives the ride through system developed to overcome voltage sags and short duration outages at the power supply terminals of the control cards in these converters. A 13.5v buck-boost converter has been designed to be used along with a stack of ultra capacitors to achieve the same. A micro-controller based digital control platform is made use of to achieve the control objective. The design of the ultra capacitors stack and the Buck-boost converter is described and the performance of the simulation is evaluated