The isolated cuk converter
![the isolated cuk converter the isolated cuk converter](https://m.media-amazon.com/images/I/61ELmnU7mML._AC_SL1500_.jpg)
Charging a capacitor with a current source (the inductor) prevents resistive current limiting and its associated energy loss.Īs with other converters ( buck converter, boost converter, buck–boost converter) the Ćuk converter can either operate in continuous or discontinuous current mode. This conversion is necessary because if the capacitor were connected directly to the voltage source, the current would be limited only by the parasitic resistance, resulting in high energy loss. At a short time scale an inductor can be considered as a current source as it maintains a constant current. The two inductors L 1 and L 2 are used to convert respectively the input voltage source (V i) and the output voltage source (C o) into current sources. The capacitor C is used to transfer energy and is connected alternately to the input and to the output of the converter via the commutation of the transistor and the diode (see figures 2 and 3). It is an inverting converter, so the output voltage is negative with respect to the input voltage. When in the on-state, the capacitor C transfers the energy to the output capacitor through the inductance L 2.Ī non-isolated Ćuk converter comprises two inductors, two capacitors, a switch (usually a transistor), and a diode. It can be seen that when in the off-state, the capacitor C is being charged by the input source through the inductor L 1. In this figure, the diode and the switch are either replaced by a short circuit when they are on or by an open circuit when they are off.
![the isolated cuk converter the isolated cuk converter](https://1.bp.blogspot.com/-uXd1qHU9XPw/XfjMXclHHhI/AAAAAAAAPG0/_4WBU2DUiKk67lrdQ9s4Rs9Kq6BrYTJjACLcBGAsYHQ/s1600/image001.gif)
Pires VF, Cordeiro A, Foito D, Silva JF (2019) High step-up DC–DC converter for fuel cell vehicles based on merged quadratic Boost–Ćuk.Fig 3: The two operating states of a non-isolated Ćuk converter.
THE ISOLATED CUK CONVERTER GENERATOR
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