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The paper derives a technique to develop large and small signal state-space models of a single-phase dual active bridge (DAB) based DC-DC converter operated in phase-shift mode. An improved first harmonic approximation (I-FHA) method is proposed by introducing a correction factor to the conventional first harmonic approximation (FHA) technique. The output DC voltage and the two orthogonal components...
This paper presents a hybrid control strategy for a dual active bridge (DAB) based dc-dc converter which combines the benefits of traditional phase shift and burst mode modulation schemes. The advantage of using such a control strategy stems from the fact that it can extend the zero voltage switching (ZVS) range of all power switches in both the primary and secondary bridges when there is a wide variation...
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