1. Coupled-Inductor-Based High-Step-Down-Ratio Converter with Output Current Ripple Reduction.
- Author
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Hwu, Kuo-Ing and Jiang, Wen-Zhuang
- Subjects
- *
DC-to-DC converters , *ELECTROLYTIC capacitors , *ELECTRIC inductors , *ELECTRIC potential , *CONVERTERS (Electronics) - Abstract
Even though the coupled-inductor-based high-step-down-ratio converters can achieve a higher step-down voltage gain than the traditional buck converter, their output current suffer from a high output current ripple, causing a high output voltage ripple. Therefore, a bulky electrolytic output capacitor is usually used to suppress the output voltage ripple. Moreover, the longevity of the output electrolytic capacitor is highly dependent on the output current ripple. In [6–8], a passive current ripple cancellation circuit was applied to the DC–DC converters to reduce the output current ripple. However, these literatures did not mention and analyze the situations for coupled-inductor converters. Moreover, the same concept, including analysis and design, cannot be directly applied to the coupled-inductor-based converters. Therefore, in this paper, the analysis, design, and experimental results of the current ripple cancellation circuit applied to the coupled-inductor-based high-step-down-ratio converter are given to verify the effectiveness. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
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