Developing A 25-kW SiC-Based Fast DC Charger (Part 4): Design Considerations And Simulation Of The DC-DC Stage

Focus:

In part 4 of this series, the spotlight is on the dc-dc dual active bridge phase-shift (DAB-PS) zero voltage switching (ZVS) converter. Here the authors present some of the design process for the dc-dc stage. In particular, they explain key design considerations and tradeoffs in developing such a converter, especially around the definition of the magnetic components, and discuss the power simulations and design decisions made. In this part , they also touch on the concept of flux-balancing in a transformer and how it has been addressed for this 25-kW fast dc charger.

What you’ll learn:

• How to design the transformer and inductor for a dual active bridge phase-shift (DAB-PS) zero voltage switching (ZVS) converter
• How to understand the design considerations for flux balancing in the transformer of a DAB-PS ZVS converter
• How to model and simulate the magnetics design for a DAB-PS ZVS converter

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Author & Publication:

Oriol Filló, Karol Rendek, Stefan Kosterec, Daniel Pruna, Dionisis Voglitsis, Rachit Kumar and Ali Husain, ON Semiconductor, Phoenix, Ariz., How2Power Today, Jul 15 2021

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