Design Method of DC Bus Capacitor for Two-Stage AC/DC Converter
| Autor: | Kaibi Zhang, Peng Wu, Fei Xiong |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 2360:012017 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/2360/1/012017 |
| Popis: | In the single-phase two-stage AC/DC converter system, the inherent power fluctuation of double frequency will lead to the double frequency fluctuation of DC bus voltage, which will affect the stable operation of the converter. In addition, this fluctuation will also raise the current stress of the double active bridge. This makes it more difficult to design DC bus capacitance parameters. In this paper, a design method of DC bus capacitors based on high ripple operation is proposed, and the theoretical limit of DC bus voltage ripple is analyzed. On the premise of considering stable operation and current stress of converter, the capacitance of DC bus is reduced to improve the power density of the system. The design of capacitance parameters has a theoretical basis to follow. Finally, the correctness and effectiveness of the method are verified by examples. |
| Databáze: | OpenAIRE |
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