Abstract
Parallel interleaved converter belongs to the family of modular multilevel converter. This converter has dual nature; it is a multilevel converter and also a parallel converter. The advantages of both multilevel converters and the parallel converters are available in this family of converters. The specialty of this converter is that, multilevel voltage can be generated by using only one DC voltage level. Capacitor voltage balancing is not necessary in this type of multilevel converter. The interleaving switching method generates circulating current within the converter modules. The magnitude of the circulating current depends on the switching frequency, module inductance, dc link voltage and the numbers of parallel modules. It is also observed that, the circulating current of a parallel interleaved converter is constant for a switching frequency, module inductance and the dc link voltage. This means the converter has better efficiency with high output current. This converter can be very suitable for low voltage and high current applications.
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