Proceedings ArticleDOI
A Control Scheme for Mitigating the Impact of Variations in Device Parameters for Phase-Modulated Converters
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TLDR
From the analysis, it is observed that the variation in the on-state resistance of the lagging leg MOSFETs causes larger DC-current compared to leading leg, and the proposed control scheme is proposed which retains the performance characteristics of the converter.Abstract:
In the full-bridge converter, DC-current in the transformer exists due to unequal forward voltage drops in the semiconductor devices. A conventional peak current mode control is used to mitigate this DC-current in duty controlled full-bridge converter. In phase-modulated full-bridge converter, unlike duty controlled converter, conventional peak current control is not viable to mitigate the DC-current. A novel control scheme to mitigate this DC-current is proposed which retains the performance characteristics of the converter. With the proposed control scheme, output regulation and DC-current mitigation are implemented in a decoupled manner, therefore output voltage is unaltered during the process of DC-current mitigation. The impact of variations in on-state resistance of the lagging and leading leg MOSFETs on the DC-current magnitude is analyzed. From the analysis, it is observed that the variation in the on-state resistance of the lagging leg MOSFETs causes larger DC-current compared to leading leg. The simulation and experimental results verifying the proposed control scheme is presented.read more
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Journal ArticleDOI
An Overview of High-Conversion High-Voltage DC–DC Converters for Electrified Aviation Power Distribution System
Niraja Swaminathan,Yue Cao +1 more
TL;DR: In this paper, the authors present a review of high-conversion high-voltage (HCHV) dc-dc converters for a modern aerial vehicle's power distribution system.
References
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Proceedings ArticleDOI
Design considerations for high-voltage high-power full-bridge zero-voltage-switched PWM converter
TL;DR: In this article, a steady-state analysis is presented with complete characterization of the converter operation and the design procedures based on the analysis are presented and the various losses in the circuit assessed.
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An Adaptive ZVS Full-Bridge DC–DC Converter With Reduced Conduction Losses and Frequency Variation Range
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Journal ArticleDOI
Operation analysis of a phase-shifted full-bridge converter during the dead-time interval
TL;DR: In this paper, the authors developed theoretical analysis to estimate the dead-time as a function of load current for a phase-shifted full-bridge (PSFB) converter, which can achieve zerovoltage switching (ZVS) operation by using the energy stored in the transformer leakage inductance to discharge or charge the output capacitance of the switches.
Proceedings ArticleDOI
Novel transformer-flux-balancing control of dual-active-bridge bidirectional converters
TL;DR: In this paper, a flux balancing method for the isolated dual-active-bridge (DAB) bidirectional converter based on direct control of the magnetizing current is proposed, where the dc component of the primary and secondary current is controlled by providing two control loops.
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