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Reducing the Modulation Voltage Error in MMCs by Considering the Capacitor Voltage Change Within One PWM Cycle for Improved Current Control
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| Author(s) |
Marvin MIDDEKE |
| Abstract |
The impact of capacitor voltage changes during the modulation period is examined in order to improve the arm voltage of a modular multilevel converter. Different methods are used to predict and compensate for the capacitor voltage change and the resulting arm voltage error, whereby two of the improvements provide a possibility to easily upgrade existing modulation algorithms. Simulation and measurement results demonstrate a reduced arm voltage error and thus a reduced circulating current in comparison to the case when the voltage change is neglected in the modulator. |
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| Filename: | 0361-epe2017-full-17200427.pdf |
| Filesize: | 357.9 KB |
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| Type |
Members Only |
| Date |
Last modified 2018-04-17 by System |
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