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Control of Battery-Integrated MMCs with NLM using Distributed Control Architecture
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| Author(s) |
Arvind BALACHANDRAN, Tomas JONSSON, Lars ERIKSSON |
| Abstract |
Battery-integrated modular multilevel converters (BI-MMCs) have several series-connected submodules, each with a small battery module. This design has high cell-level control, potentially improving efficiency and battery lifespan compared to traditional EV battery inverter systems. A distributed control architecture is preferred for BI-MMCs with a large number of submodules, and in such control architectures, the communication network limits the sample rate of the reference signal. For variable speed drives, where the fundamental frequency can be up to a few kHz, the reference sampling frequency can adversely affect the submodule battery current quality and accuracy. The concept of reconstructing the reference signal at a higher sampling frequency than the communication link's update rate for BI-MMCs using nearest level modulation is introduced and validated through simulations and experimental results. |
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| Filename: | 0253-epe2025-full-19075170.pdf |
| Filesize: | 1.022 MB |
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| Type |
Members Only |
| Date |
Last modified 2025-08-31 by System |
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