Scholarlink

<p>To solve the problem of large current ripple on the low-voltage side of the interleaved switched capacitor bidirectional converter in the energy storage system, an interleaved parallel switched capacitor bidirectional DC/DC converter based on coupled inductors by using magnetic integration technology is proposed. The magnetic core can be effectively shared by integrating the discrete inductors on the low-voltage side of the converter into a coupled inductor, and the coupling coefficient is adjusted to fully utilize the core flux, thereby increasing the inductance value and improving the current ripple on the low-voltage side. Based on the analysis of the relationship among the inductance value, duty cycle and coupling coefficient under different modes of the converter, this paper finds the functional relationship between the converter ripple current and the coupling coefficient. The simulation results show that when the coupling coefficient is greater than 0, the current ripple decreases on the low-voltage side gradually as the coupling coefficient increases. Finally, a 150W experimental prototype is built for verification. The efficiency of the converter is 91.28%. When the coupling coefficients are 0.15, 0.63 and 0.82, the current ripple on the low-voltage side was reduced by 9.88, 37.03 and 44.44%, respectively.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Design of low ripple interleaved parallel switching capacitors bidirectional DC converter based on magnetic integration technology

  • 期刊论文

  • 发表日期：

    2025年6月17日

查看全文
  • Ling Mao,
  • Jian Wang,
  • Jinbin Zhao

摘要

To solve the problem of large current ripple on the low-voltage side of the interleaved switched capacitor bidirectional converter in the energy storage system, an interleaved parallel switched capacitor bidirectional DC/DC converter based on coupled inductors by using magnetic integration technology is proposed. The magnetic core can be effectively shared by integrating the discrete inductors on the low-voltage side of the converter into a coupled inductor, and the coupling coefficient is adjusted to fully utilize the core flux, thereby increasing the inductance value and improving the current ripple on the low-voltage side. Based on the analysis of the relationship among the inductance value, duty cycle and coupling coefficient under different modes of the converter, this paper finds the functional relationship between the converter ripple current and the coupling coefficient. The simulation results show that when the coupling coefficient is greater than 0, the current ripple decreases on the low-voltage side gradually as the coupling coefficient increases. Finally, a 150W experimental prototype is built for verification. The efficiency of the converter is 91.28%. When the coupling coefficients are 0.15, 0.63 and 0.82, the current ripple on the low-voltage side was reduced by 9.88, 37.03 and 44.44%, respectively.