Reupload to correct the original corrupted video.
This is a brief look at soft switching in the DAB. Soft switching can be accomplished in many converters (and in different ways), but is typically grouped in to Zero Current or Zero Voltage Switching.
NOTE: I included an 1:n transformer, but did not include this extra factor in the equations. Let's just say n = 1 :)
0:00 - Intro
2:50 - ZCS and ZVS
5:13 - ZVS in the DAB
10:50 - Current Close-up
23:15 - ZCS in the DAB
27:13 - Outro
References:
A Transformerless Dual Active Bridge DC-DC Converter for Point-of-Load Power Supplies
https://tspace.library.utoronto.ca/bitstream/1807/70201/1/Amin_Amr_201511_MAS_thesis.pdf
Fundamentals of Power Electronics - Erickson and Maksimovic