An Active Power Decoupling Strategy to Reduce the Capacitor Size of a Cascaded H-Bridge Converter in a Solid State Transformer

Yadav, Sachin; Qin, Zian; Bauer, Pavol

An Active Power Decoupling Strategy to Reduce the Capacitor Size of a Cascaded H-Bridge Converter in a Solid State Transformer

Conference paper (2024)

Authors

Sachin Yadav DC systems, Energy conversion & Storage

Zian Qin DC systems, Energy conversion & Storage

Pavol Bauer DC systems, Energy conversion & Storage

Research Group

DC systems, Energy conversion & Storage

Active front-end Active power-decoupling circuit Cascaded H-Bridge Dual Active Bridge (DAB) Solid-state transformer System modeling

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Published Date

2024

Language

English

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Research Group

DC systems, Energy conversion & Storage

Abstract

This paper presents a control strategy for active power decoupling in a Solid State Transformer (SST) using a cascaded H-bridge (CHB) converter, dual active bridge (DAB) converters, and a high-frequency link (HFL). The strategy balances capacitor voltage and decouples power flow, significantly reducing second harmonic voltage ripple in DC link capacitors and potentially reducing their size.

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