Optimal ZVS Modulation of Single-Phase Single-Stage Bidirectional DAB AC–DC Converters

Abstract

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Reactive Power and Soft-Switching Capability Analysis of Dual-Active-Bridge DC-DC Converters with Dual-Phase-Shift Control

“…However, it is difficult to always fulfill a voltage ratio of 1:1 in practical applications considering the wide operating voltage range of energy storage sources such as batteries or ultracapacitors [9]. As a result, the CPS suffers from a low power conversion efficiency due to its high reactive power and hard switching operation [10], [11].…”

“…As shown in this expression, the determination of the optimal phase-shift pair with the DPS is a 1-D optimization problem, which is similar to the PSPWM shown in [10].…”

“…In order to realize ZVS soft-switching operation, the inductor current zero crossing instant should be arranged within the time interval with the voltages v T1 and v T2 having the opposite polarities [8], [10], [21], [22]. Thus, the inductor current i L at different switching angles must fulfill the following inequalities, which are shown in TABLE IV.…”

Designing Dual-Active Bridge (DAB) Converter for Energy Storage/Recovery Systems in a Lighting Smart Grid context

“…It is a bidirectional converter [2] and it is based in the coordinate operation of two full bridge inverters, one inductor and, optionally, one isolation transformer. Several works deals about DAB converter, reference [2] shows a DC to DC application with output voltage stabilization, introduction of droop control can be found in [3], a comparison among other topologies in [4], a study about switching optimization in [5], implementation in AC-to-DC applications [6] and Home Area Network applications in [7].…”

Analysis and Cell-Level Experimental Verification of a 25 kW All-SiC Isolated Front End 6.6 kV/400 V AC-DC Solid-State Transformer

“…Variant ③ is a fully integrated isolated AC-DC dual-active bridge converter (cf., e. g., [10]). Whereas such single-stage power conversion potentially achieves low losses, the complexity is high, especially considering a multi-cell arrangement.…”