Third-Harmonic-Type Modulation Minimizing the DC-Link Energy Storage Requirement of Isolated Phase-Modular Three-Phase PFC Rectifier Systems

Langbauer, Thomas; Menzi, David; Marugg, Valentin; Vollmaier, Franz; Anderson, Jon Azurza; Kasper, Matthias; Kolar, Johann W.

doi:10.1109/access.2023.3261243

Cited by 7 publications

(1 citation statement)

References 30 publications

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“…The three-phase totem pole active rectifier can be implemented using various power semiconductor devices, including silicon MOSFETs, silicon carbide MOSFETs, and gallium nitride (GaN) devices. The choice of semiconductor devices depends on the specific application and the desired performance [95,96].…”

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Overview on Battery Charging Systems for Electric Vehicles

Dini,

Saponara,

Colicelli

2023

Electronics

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Catalyzed by the increasing interest in bi-directional electric vehicles, this paper delves into their significance and the challenges they encounter. Bi-directional electric vehicles not only serve as transportation but also function as essential electricity resources. Central to this energy revolution are On-Board Chargers (OBCs), which are pivotal in converting alternating (AC) energy into direct (DC) energy and vice versa. In this context, we explore the various circuit architectures of OBCs employed in bi-directional electric vehicles. We delve into the intricacies of rectifiers, switching converters, and the application of advanced control and filtering technologies. Our analysis extends to the implications of these circuit architectures on aspects such as voltage regulation capability, energy efficiency, and thermal management. Furthermore, we address the broader significance of these developments in the integration of bidirectional systems, which are driving advances in circuit architectures to better harness the energy flexibility of electric vehicles. We emphasize the critical role of bi-directional electric vehicles in the transition toward a smart and sustainable energy grid. To enhance accessibility for a diverse readership, we will provide concise definitions or explanations for technical terms used throughout the paper, ensuring that our work is approachable even for those who may not be experts in the field.

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Overview on Battery Charging Systems for Electric Vehicles

Dini,

Saponara,

Colicelli

2023

Electronics

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Increasing Light Load Efficiency in Phase-Shifted, Variable Frequency Multiport Series Resonant Converters

Langbauer,

Connaughton,

Vollmaier

et al. 2023

IEEE Access

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Multiport power conversion topologies provide the functionality of more single (and independent) converters but with just one transformer having multiple windings (i.e., ports). In automotive on-board chargers, the multiport approach combined with symmetrical series resonant circuits, the so-called multiport series resonant converter (MSRC), enable the required galvanic isolated connection from the gridside converter (i.e., usually an AC-DC power factor correction (PFC) stage) to the vehicle's batteries, i.e., the main high-voltage (HV) traction and the auxiliary low-voltage (LV), theoretically allowing to achieve increased power densities and enabling a flexible (and bidirectional) power routing among the different ports. High efficiency figures are normally specified in the considered application field for a very wide voltage ratios among the different ports, due to the variability of battery voltages, thus requiring proper and optimized control strategies of the underlying converter. The variation of the battery voltage is in fact highly affecting the MSRC operation, especially for light loads at a low state-of-charge, and high losses can be experienced since zero voltage switching conditions are lost. Beside the conventional control approach of the MSRC, where the power flow is set with a phase-shift between the individual full bridges or by changing the switching frequency, this paper proposes a novel and coordinated approach, including the manipulation of both and the additional modulation of the duty-cycle as a function of the grid-side DClink voltage (i.e., the output of the PFC stage), aiming at introducing a zero-voltage interval on the full bridge output voltages. A full mathematical description of the adopted converter topology is reported, also including accurate simulation models for losses estimation allowing a fair comparison between the proposed duty-cycle mode control and the conventional control strategy. Detailed operation guideline for achieving zero-voltage switching within the connected full bridges is also reported. Experimental results validate the proposal and highlight a significant peak and average efficiency improvements with respect to standard control approaches.INDEX TERMS multiport series resonant converter, modulation scheme, light load efficiency, DC/DC converter, battery chargers, energy and power routing, automotive converters

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A Stacked Dual-Active-Half-Bridge DC/DC Differential Power Converter

Jahnes,

Preindl

2023

2023 IEEE Energy Conversion Congress and Exposition (ECCE)

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Third-Harmonic-Type Modulation Minimizing the DC-Link Energy Storage Requirement of Isolated Phase-Modular Three-Phase PFC Rectifier Systems

Cited by 7 publications

References 30 publications

Overview on Battery Charging Systems for Electric Vehicles

Overview on Battery Charging Systems for Electric Vehicles

Increasing Light Load Efficiency in Phase-Shifted, Variable Frequency Multiport Series Resonant Converters

A Stacked Dual-Active-Half-Bridge DC/DC Differential Power Converter

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