Tiny Power Box - Thermal Investigations for Very High Power Density Onboard Chargers

Mentin, Christian; Recepi, Ismail; Matzick, Philip

doi:10.1109/therminic57263.2022.9950663

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…It incorporates a bidirectional AC-DC PFC converter, a three-port HFT, a bidirectional HB CLLC resonant converter at the HV battery side, and an FB LLC resonant topology facing the LV battery (see Figure 21a). Similarly, a modular three-phase APM iOBC rated at 21 kW, achieving a peak efficiency of 97.5% and a power density of 3.1 kW/L, is described in [158,159]. In this setup, the primary side of the CLLC resonant converter connects to single-phase interleaved totem-pole PFC converters, while its secondary side links to the HV battery side.…”

Section: Auxiliary Power Module (Apm) Iobcsmentioning

confidence: 99%

“…The third port of the multi-port HFT connects to the LVDC converter through an interleaved step-down topology (see Figure 21b). [157]; (b) two-stage bidirectional converter with interleaved totem-pole PFC converters, CLLC resonant converter, three-port HFT, and interleaved buck converter [158,159].…”

Section: Auxiliary Power Module (Apm) Iobcsmentioning

confidence: 99%

“…Figure 21.Multiport converters for APM iOBCs: (a) single-stage bidirectional converter with bidirectional PFC converter, three-port HFT, bidirectional HB CLLC resonant converter, and FB LLC resonant[157]; (b) two-stage bidirectional converter with interleaved totem-pole PFC converters, CLLC resonant converter, three-port HFT, and interleaved buck converter[158,159].…”

mentioning

confidence: 99%

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Non-Integrated and Integrated On-Board Battery Chargers (iOBCs) for Electric Vehicles (EVs): A Critical Review

Nasr Esfahani,

Darwish,

et al. 2024

Energies

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The rising Greenhouse Gas (GHG) emissions stemming from the extensive use of automobiles across the globe represent a critical environmental challenge, contributing significantly to phenomena such as global warming and the deterioration of air quality. To address these challenges, there is a critical need for research and development in electric vehicles (EVs) and their associated charging infrastructure, including off-board and on-board chargers (OBCs). This paper aims to bridge the gaps in existing review literature by offering a comprehensive review of both integrated and non-integrated OBCs for EVs, based on the authors’ knowledge at the time of writing. The paper begins by outlining trends in the EV market, including voltage levels, power ratings, and relevant standards. It then provides a detailed analysis of two-level and multi-level power converter topologies, covering AC-DC power factor correction (PFC) and isolated DC-DC topologies. Subsequently, it discusses single-stage and two-stage non-integrated OBC solutions. Additionally, various categories of integrated OBCs (iOBCs) are explored, accompanied by relevant examples. The paper also includes comparison tables containing technical specifications and key characteristics for reference and analysis.

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Section: Auxiliary Power Module (Apm) Iobcsmentioning

confidence: 99%

Section: Auxiliary Power Module (Apm) Iobcsmentioning

confidence: 99%

mentioning

confidence: 99%

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Non-Integrated and Integrated On-Board Battery Chargers (iOBCs) for Electric Vehicles (EVs): A Critical Review

Nasr Esfahani,

Darwish,

et al. 2024

Energies

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

et al. 2023

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A three-phase ac/dc converter with high-frequency isolation can be realized as a monolithic three-phase or as a phase-modular system by combining three single-phase Power Factor Correction (PFC) rectifier modules with individual isolated dc-dc converters. Advantageously, for a phase-modular system the module configuration can be changed depending on the instantaneous input-output voltage ratio (i.e., a star-(Y)-or a delta-(∆)-arrangement such that wide voltage ranges can be covered without a massive over-dimensioning of the main power components. However, the main disadvantage of a phase-modular converter realization is the fact that the input power of each PFC rectifier module pulsates at twice the mains frequency (which is inherent to single-phase power conversion) such that large dc-link capacitors are required. Recent literature predicts a substantial power pulsation reduction enabled by means of third-(3 rd )harmonic injection modulation which is applicable for the Y-connection (where a common-mode (CM) / zero-sequence (ZS) voltage is injected), and for the ∆-connection of the three single-phase PFC rectifier modules (where a CM / ZS current is injected). This changes the distribution of the power flow in the three-phase system and the power pulsation is shifted to higher frequencies. This paper experimentally verifies and extends the dc-link energy storage requirement reduction of the 3 rd -harmonic injection modulation concept: In a first step, the derivation of the harmonic injection concept is recapitulated and suitable control methods are discussed for both CM voltage (Y-arrangement) and CM current (∆-arrangement) injection. Further, an alternative CM voltage injection strategy with simplified reference generation based only on the instantaneous grid voltage measurements is presented and compared to the pure 3 rd -harmonic injection modulation. Measurement results obtained from a 6 kW prototype reveal a dc-link voltage variation and/or energy buffering reduction by up to 38.6 % enabled by the harmonic injection modulation compared to conventional operation without 3 rd -harmonic injection modulation.

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Thermo-Mechanical Investigations for PCB Assemblies Using Top-side Cooled Power Devices

Matzick,

Mentin,

Adelbrecht

et al. 2024

2024 30th International Workshop on Thermal Investigations of ICs and Systems (THERMINIC)

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Tiny Power Box - Thermal Investigations for Very High Power Density Onboard Chargers

Cited by 4 publications

References 8 publications

Non-Integrated and Integrated On-Board Battery Chargers (iOBCs) for Electric Vehicles (EVs): A Critical Review

Non-Integrated and Integrated On-Board Battery Chargers (iOBCs) for Electric Vehicles (EVs): A Critical Review

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

Thermo-Mechanical Investigations for PCB Assemblies Using Top-side Cooled Power Devices

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