Can we use a CT (current transformer) in series to the inductor which is operating in CCM?

 Yes, it is possible to use a current transformer (CT) in series with an inductor that is operating in continuous conduction mode (CCM) in a power electronics circuit.

The purpose of using a CT in series with an inductor is to measure the current flowing through the inductor without disturbing the circuit operation or introducing significant additional losses. The CT can provide a galvanic isolation between the load and the measuring circuit, which can be important in high-voltage applications.

When using a CT in series with an inductor operating in CCM, it is important to ensure that the CT is rated for the maximum current that will flow through it. The CT should also be selected to have a sufficiently high turns ratio to provide an output voltage that is within the range of the measuring circuit. The CT should be placed in series with the inductor such that the entire current flowing through the inductor also flows through the CT.

It is also important to ensure that the additional inductance of the CT does not significantly affect the operation of the power electronics circuit, particularly if the circuit is operating in a resonant mode. The CT should be carefully chosen to have a low enough inductance to avoid such effects.

In summary, a CT can be used in series with an inductor operating in CCM to measure the current without disturbing the circuit operation or introducing significant additional losses, provided that the CT is rated for the maximum current, has a sufficiently high turns ratio, and has a low enough inductance to avoid affecting the circuit operation.