DC-DC High Conversion Ratio Push-Pull Resonant Converter Based on Voltage Double Rectifier

Analysis of AC/DC/DC Converter Modules for Direct Current Fast-Charging Applications

“…The DC/DC converter realizes voltage adjustment between the vehicle's battery and the input stage of the charger, and voltage regulation on the battery side during the charging process. In electric vehicle charging applications, the following DC/DC converter topologies may be used: flyback converter [58], dual-flyback [59], half-bridge or push-pull [60], and single active bridge (SAB). For bidirectional operation, dual-halfbridge [61] or dual-push-pull [62] and dual active bridge (DAB) [63] or LLC DC-DC circuit [64,65] topologies can also be used.…”

Design of a Step-Up DC–DC Converter for Standalone Photovoltaic Systems with Battery Energy Storages

“…In addition, they have high voltage spikes for power switches resulting from the stored energy at the boost inductor. On the other hand, the voltage-fed DC-DC converters have low primary switch voltage stress, minimal components, and small size [9][10][11][12][13][14][15][16][17][18][19][20][21]. The voltage-fed converters can be classified into the unidirectional core excitation topology and the bidirectional core excitation topology.…”

“…However, it increases the components, control complexity, size, and cost of the designed converter. The resonant techniques are employed to suppress voltage spike [16][17][18][19][20][21][22], which provides the soft switching operation of power switches at the primary side. However, the switching power losses should be considered at the secondary side, where power diodes generate switching power losses during their switching operations.…”

“…As shown in Figure 2, the proposed step-up DC-DC converter consists of the push-pull converter and resonant voltage doubler rectifier. The resonant voltage doubler rectifiers provide a higher voltage conversion ratio and reduce the high turns' ratio in the transformer [16][17][18][19][20][21][22]. It operates in the discontinuous conduction mode (DCM) to reduce the switching losses and to remove the reverse-recovery losses for the power diodes at the secondary side.…”