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Phase-Shift Modulation for Flying-Capacitor DC-DC Converters
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| Author(s) |
Philipp REHLAENDER |
| Abstract |
Multi-level flying capacitor converters are an attractive solution for PFC and inverter stages due to their increased output frequency and the application of semiconductors of lower voltage. Due to the beneficial figure of merit of lower-voltage semiconductors switching losses and conduction losses can be reduced. Consequently, this paper analyzes the three-level flying capacitor (FC) module as a replacement for the conventional half bridge. It discusses flying-capacitor voltage control options when being employed for the conventional half-bridge LLC converter with a flying-capacitor inverter and proposes a simple-to-implement modulation to fully utilize the benefits of the three-level structure of the FC module. It explores potential applications to propose a flying capacitor phase shift converter and a three-phase three-level LLC resonant converter with a five-level line-to-line voltage. |
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| Filename: | 0394-epe2022-full-14093590.pdf |
| Filesize: | 1.3 MB |
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| Type |
Members Only |
| Date |
Last modified 2023-09-24 by System |
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