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Ripple-free Multiphase Interleaved Stacked Converter for High-power Applications

Lookup NU author(s): Dr Mohammed AlharbiORCiD, Dr Mohamed Dahidah, Dr Saleh AliORCiD, Dr Salaheddine Ethni, Professor Volker Pickert



This is the authors' accepted manuscript of an article that has been published in its final definitive form by Institute of Electrical and Electronics Engineers, 2022.

For re-use rights please refer to the publisher's terms and conditions.


A novel control technique that guarantees a ripple-free output current and voltage of a DC-DC multiphase staked interleaved converter is proposed. The conventional multiphase interleaved converters have been extensively used in various applications. However, ripple cancellation in these converters solely depends on the number of phases and can only be achieved at specific duty cycles. On the other hand, wide-range and ripple-free output are important paramount features for many modern applications. Therefore, the presented converter aims to combine the advantages of both the multiphase interleaved and the stacked converters into a single-unit converter suitable for high-power applications. Ripple-free output current/voltage is always guaranteed regardless of the number of phases and duty cycle values. This feature is accomplished by adding a fractionally-rated phase-leg to the conventional multiphase interleaved converter and modulating it with the proposed control approach. The Configurable Logic Block (CLB), a state-of-the-art tool developed by Texas Instruments, is utilized to reduce the hardware size of the entire conversion system while increasing its speed and flexibility. Extensive simulation studies are carried out to confirm the functionality of the proposed control scheme. A laboratory porotype is developed to validate the effectiveness of the proposed control method experimentally. With only a few more components, significant reductions in output ripples are achieved.

Publication metadata

Author(s): Alharbi MA, Dahidah MSA, Ali SA, Ethni S, Pickert V

Publication type: Article

Publication status: Published

Journal: IEEE Transactions on Power Electronics

Year: 2022

Volume: 37

Issue: 12

Pages: 14770-14780

Print publication date: 01/12/2022

Online publication date: 29/07/2022

Acceptance date: 18/07/2022

Date deposited: 28/07/2022

ISSN (print): 0885-8993

ISSN (electronic): 1941-0107

Publisher: Institute of Electrical and Electronics Engineers


DOI: 10.1109/TPEL.2022.3194979

ePrints DOI: 10.57711/t6q5-k112


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