Generalized Variable Interleaving Technique for Parallel Connected DC-DC Converters

Abstract

This paper deals with a generalized interleaving technique applied to parallel connected DC-DC converters. When the operating conditions for each of the converters (like input voltages, power sharing etc.) are different, the fixed interleaving technique with equal amount of phase shift among the carriers become inefficient due to improper ripple cancellation in the combined current. A variable interleaving technique with generalized approach is proposed in this work. The algorithm will seamlessly work for 'n' number of converters in parallel to optimize their combined ripple current. The analysis and results are presented for four and five parallel converters to demonstrate the effectiveness of the proposal. � 2020 IEEE.