A Multi-level Pseudo Single Active Bridge (PSAB) DC-DC Converter for Offshore DC Wind Turbines
Paper in proceeding, 2023

The three-phase single active bridge (SAB) converter suffers from large second harmonic currents in the ac-link, low transformer utilization, and large required dc-link capacitors. This has led to a focus on the dual active bridge (DAB) converters in the literature, even for unidirectional applications like dc wind turbines. In these applications, the load-side transistors of the DAB converter transfer power for a small fraction of the fundamental period. This means investment in chips that are not used to the maximum of their potential. This paper proposes a hybrid of the SAB and DAB converters to solve this issue. The proposed converter can be controlled by phase shift modulation and performs similarly to a DAB converter. It is shown that this converter’s total installed transistor apparent power is 40% and 45% less than that of conventional dual active bridge (DAB) and multi-level DAB converters, respectively.

DC-DC power converter

Single Active Bridge (SAB)

Three-phase system.

Isolated converter

Dual Active Bridge (DAB)

Author

Babak Alikhanzadehalamdari

Chalmers, Electrical Engineering, Electric Power Engineering

Torbjörn Thiringer

Chalmers, Electrical Engineering, Electric Power Engineering

2023 25th European Conference on Power Electronics and Applications, EPE 2023 ECCE Europe


9789075815412 (ISBN)

2023 25th European Conference on Power Electronics and Applications (EPE'23 ECCE Europe)
Aalborg, Denmark,

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.23919/EPE23ECCEEurope58414.2023.10264631

More information

Latest update

4/2/2024 9