Design, Modulation, and Control of Battery-Integrated Modular Multilevel Converters for Automotive Applications DOI
Arvind Balachandran, Tomas Jönsson, Lars Eriksson

и другие.

SAE technical papers on CD-ROM/SAE technical paper series, Год журнала: 2025, Номер 1

Опубликована: Апрель 1, 2025

<div class="section abstract"><div class="htmlview paragraph">As part of the global effort to combat climate change, electric vehicles (EVs) are gaining popularity, even for long-haul commercial transportation. A battery pack is a critical component an EV, and it contains several modules with many series- parallel-connected electrochemical cells. Strict safety operational limits enforced on cell-level ensure safe operation pack. However, variations in properties among cells causes some reach faster than others. This total power, over time, energy delivered lifetime Maximizing by (potentially also improving pack’s lifetime) can be achieved increasing control, battery-integrated modular multilevel converters (BI-MMC) presented as solution. BI-MMC has series-connected DC-to-AC converters, commonly called submodules (SM), every SM small few cells, thus allowing increased control. The focus thesis evaluation different design, modulation techniques BI-MMCs compare efficiency against state-of-the-art SiC MOSFET-based 2-level inverter 40-ton vehicle.</div><div paragraph">The first contribution circuit topologies two-level inverter. full-bridge SMs have higher half-bridge SMs. Compared inverter, based similar efficiencies. 6-phase both 3-phase but cost due number Full-bridge 5 6-series connected per highest efficiency.</div><div second design optimization DC-link capacitors MOSFET switching frequency maximize efficiency. revealed that selecting close resonant SM-battery decreases considered phase-shifted carrier-based technique, system further using low-switching techniques. third impact nearest level (NLM) BI-MMCs. NLM results lower semiconductor losses modulation, losses. Direct implementations result unequal utilization SM-batteries mitigated cycling duty cycles at fundamental frequency, which frequencies.</div><div paragraph">Distributed control preferred MMCs numerous SMs, where central unit performs converter carried out units. fourth concept reconstructing reference signals sample units relative unit, improves controllability SMs.</div><div paragraph">Conventional EV packs directly fast charger, BI-MMC, integrated, potentially DC charging capabilities. fifth derivation investigation maximum power same during traction. shows most about 1 MW.</div></div>

Язык: Английский

Design, Modulation, and Control of Battery-Integrated Modular Multilevel Converters for Automotive Applications DOI
Arvind Balachandran, Tomas Jönsson, Lars Eriksson

и другие.

SAE technical papers on CD-ROM/SAE technical paper series, Год журнала: 2025, Номер 1

Опубликована: Апрель 1, 2025

<div class="section abstract"><div class="htmlview paragraph">As part of the global effort to combat climate change, electric vehicles (EVs) are gaining popularity, even for long-haul commercial transportation. A battery pack is a critical component an EV, and it contains several modules with many series- parallel-connected electrochemical cells. Strict safety operational limits enforced on cell-level ensure safe operation pack. However, variations in properties among cells causes some reach faster than others. This total power, over time, energy delivered lifetime Maximizing by (potentially also improving pack’s lifetime) can be achieved increasing control, battery-integrated modular multilevel converters (BI-MMC) presented as solution. BI-MMC has series-connected DC-to-AC converters, commonly called submodules (SM), every SM small few cells, thus allowing increased control. The focus thesis evaluation different design, modulation techniques BI-MMCs compare efficiency against state-of-the-art SiC MOSFET-based 2-level inverter 40-ton vehicle.</div><div paragraph">The first contribution circuit topologies two-level inverter. full-bridge SMs have higher half-bridge SMs. Compared inverter, based similar efficiencies. 6-phase both 3-phase but cost due number Full-bridge 5 6-series connected per highest efficiency.</div><div second design optimization DC-link capacitors MOSFET switching frequency maximize efficiency. revealed that selecting close resonant SM-battery decreases considered phase-shifted carrier-based technique, system further using low-switching techniques. third impact nearest level (NLM) BI-MMCs. NLM results lower semiconductor losses modulation, losses. Direct implementations result unequal utilization SM-batteries mitigated cycling duty cycles at fundamental frequency, which frequencies.</div><div paragraph">Distributed control preferred MMCs numerous SMs, where central unit performs converter carried out units. fourth concept reconstructing reference signals sample units relative unit, improves controllability SMs.</div><div paragraph">Conventional EV packs directly fast charger, BI-MMC, integrated, potentially DC charging capabilities. fifth derivation investigation maximum power same during traction. shows most about 1 MW.</div></div>

Язык: Английский

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