Analysis of rectifier topologies for automotive HV to LV phase shift ZVT DC/DC converter

Zeljković, Sandra; Reiter, Tomas; Gerling, Dieter

doi:10.1109/epepemc.2012.6397205

Cited by 9 publications

(4 citation statements)

References 8 publications

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“…The blocking voltage of the secondary side devices is two times the transformer reflected secondary voltage for center tapped and current doubler, or one time the transformer reflected secondary voltage for full bridge. However, the effective R DS(on) is twice as big for full bridge rectification [22]. Therefore, current doubler and center tapped rectifiers are the most appropriate for low voltage and high current applications.…”

Section: Secondary Side Rectifier LV Mosfetsmentioning

confidence: 99%

“…A lower voltage class is enabled by a proper design of the transformer turns ratio, a reduction in the leakage combined with a big external resonant inductance and clamping diodes [29]. Any additional overshoot above the nominal blocking voltage would require further increasing the maximum limits of the blocking voltage capabilities of the rectification devices; or alternatively to use clamping or snubbering mechanisms that bring additional power losses, complexity and costs [22,25]. Furthermore, it is a common practice in the design of switched mode power supplies (SMPS), to limit the maximum stress on the components (voltage, current, temperature) to a rated percentage of their safe maximum limits under any normal working conditions of the converter [40].…”

Section: Secondary Side Srs LV Mosfetsmentioning

confidence: 99%

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A Practical Approach to the Design of a Highly Efficient PSFB DC-DC Converter for Server Applications

et al. 2019

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The phase shift full bridge (PSFB) is a widely known isolated DC-DC converter topology commonly used in medium to high power applications, and one of the best candidates for the front-end DC-DC converter in server power supplies. Since the server power supplies consume an enormous amount of power, the most critical issue is to achieve high efficiency. Several organizations promoting electrical energy efficiency, like the 80 PLUS, keep introducing higher efficiency certifications with growing requirements extending also to light loads. The design of a high efficiency PSFB converter is a complex problem with many degrees of freedom which requires of a sufficiently accurate modeling of the losses and of efficient design criteria. In this work a losses model of the converter is proposed as well as design guidelines for the efficiency optimization of PSFB converter. The model and the criteria are tested with the redesign of an existing reference PSFB converter of 1400 W for server applications, with wide input voltage range, nominal 400 V input and 12 V output; achieving 95.85% of efficiency at 50% of the load. A new optimized prototype of PSFB was built with the same specifications, achieving a peak efficiency of 96.68% at 50% of the load.

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Section: Secondary Side Rectifier LV Mosfetsmentioning

confidence: 99%

Section: Secondary Side Srs LV Mosfetsmentioning

confidence: 99%

A Practical Approach to the Design of a Highly Efficient PSFB DC-DC Converter for Server Applications

et al. 2019

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“…The idea of a reconfigurable topology based on the ZVT PS FB converter in this paper is motivated by several different conclusions from previous work (26) (27) . First, it has been shown in (26) that the wide range of operating conditions does not allow to design and utilize the ZVT PS FB converter with its full potential.…”

Section: Proposed Reconfiguration Of Zvt Ps Fb Convertermentioning

confidence: 99%

“…First, it has been shown in (26) that the wide range of operating conditions does not allow to design and utilize the ZVT PS FB converter with its full potential. Except the negative effect on the losses in the HV-side H-bridge, it has been concluded in (27) which dealt with the choice of the rectifier stage, that the blocking voltage rating of rectifier switches is negatively affected as well. For example, the full bridge rectifier compared to the full wave rectifier has the advantage of the lower blocking voltage rating of switches but at the same time the disadvantage of higher number of components.…”

Section: Proposed Reconfiguration Of Zvt Ps Fb Convertermentioning

confidence: 99%

Single-Stage Reconfigurable DC/DC Converter for Wide Input Voltage Range Operation in (H)EVs

2015

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A single-stage reconfigurable isolated DC/DC converter (1) is proposed for use in hybrid and electric vehicles (EVs and HEVs) to supply a 12 V automotive network from the HV battery. The purpose of the proposed topology is to increase the converter efficiency at the higher voltage range of the HV battery. A zero voltage transition (ZVT) phase shift (PS) full bridge (FB) converter is the basis for the reconfigurable topology, which is adapted to operate as a push-pull converter. The ZVT PS FB configuration covers the upper range of input voltages, in which an increased converter efficiency has more effect. It is furthermore reconfigured into the less efficient, hard-switching, push-pull configuration to cover the lower, less significant voltage range. The reconfiguration voltage is chosen to maximize the average efficiency according to the histogram of the HV-battery voltage during a typical driving cycle. Experimental validation of the proposed converter and its efficiency improvement are also presented.

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Design of a 5.6 kW EV low-voltage DC/DC converter based on full-bridge converter with input series output parallel structure

2022

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Analysis of rectifier topologies for automotive HV to LV phase shift ZVT DC/DC converter

Cited by 9 publications

References 8 publications

A Practical Approach to the Design of a Highly Efficient PSFB DC-DC Converter for Server Applications

A Practical Approach to the Design of a Highly Efficient PSFB DC-DC Converter for Server Applications

Single-Stage Reconfigurable DC/DC Converter for Wide Input Voltage Range Operation in (H)EVs

Design of a 5.6 kW EV low-voltage DC/DC converter based on full-bridge converter with input series output parallel structure

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