Cycloconverter is an AC to AC converter which converts input AC into variable AC. It changes frequency. Basically, there are two types of cycloconverter one is step up cycloconverter and second is step down cycloconverter. Step up cycloconverter converts lower input AC frequency to higher output AC frequency. Step down cycloconverter converts higher input AC frequency to lower output AC frequency. Cycloconverter is useful for both variable and fixed output frequency means cycloconverter is useful for changing fixed input frequency to variable output frequency and it is also useful for changing variable input frequency to fixed output frequency. In cycloconverter, there is no need for DC link. Cycloconverter inherently have voltage control feature. Cycloconverter is a one stage conversion device. Cycloconver is a one stage frequency changer. Cycloconverter is used for any power factor. Cycloconverter allows power flow in any direction.
Types of cycloconverter:
In step-up cycloconverter lower input AC frequency is converted to higher output AC frequency. Step up cycloconverter requires forced commutation.
In step down cycloconverter higher input frequency is converted to lower output frequency.
Single phase to single phase cycloconverter:
Midpoint cycloconverter and bridge type cycloconverter are the two configurations.
Three phase to single phase cycloconverter:
The figure shows three phase to single phase cycloconverter.
Three phase to three phase cycloconverter:
The figure shows three phase to three phase cycloconverter.
Applications of cycloconverter: