Ac-ac Hybrid Dual Active Bridge Converter With Half Bridge Port For Solid State Transformers

Combined Phase-Shift and Frequency Modulation of a Dual-Active-Bridge AC–DC Converter With PFC

This paper presents a combined phase-shift and frequency modulation scheme of a dual–active-bridge (DAB) ac– dc converter with power factor correction (PFC) to achieve zero voltage switching (ZVS) over the full range of the ac mains voltage. The DAB consists of a half bridge with bidirectional switches on the ac side and a full bridge on the dc side of the isolation transformer to accomplish si...

AC Circuits with Transformers

Dynamics Analysis of Lfr Model for a Single-stage High Power Factor Correction Diagonal Half-bridge Flyback Ac/dc Converter

By means of a graft scheme, a buck-boost cell and a wide range diagonal halfbridge flyback cell are combined to create a novel single-stage high power factor correction (HPFC) diagonal half-bridge flyback ac/dc converter in this paper. When both of the two cells operate in discontinuous conduction mode, the proposed converter exhibits high power factor and low bulk capacitor voltage stress inde...

Performance Verification of Dual Active Bridge DC-DC Converter

This paper presents the simulation performance of Dual Active Bridge (DAB) DC-DC converter for high power density aerospace applications. The DAB converter topology has been chosen as it features high power density, high efficiency, bidirectional power flow capability, inherent soft switching, galvanic isolation and low number of passive components. Hence the converter is a candidate for high p...

Soft-Switching performance of Dual Active Bridge DC-DC Converter

This paper presents the Zero-Voltage Switching (ZVS) performance of Dual Active Bridge (DAB) DC-DC converter for high power density aerospace applications. Switching transitions of the transistor occurring in favorable conditions such as device zero-voltage or zero-current is called as soft-switching. The benefits of soft-switching are reduced switching losses, switch stress, low electromagneti...