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航天用带耦合电感的电流连续型推挽类拓扑研究

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Keywords: 电源控制器,耦合电感,电流连续,推挽类拓扑,生成规则

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Abstract:

电流连续型直流变换器具有高功率密度、高效率和低电磁干扰等优势,因而适用于航天领域。本文提出了基于耦合电感的电流连续型推挽类拓扑的概念。以电流连续为目的,对传统推挽单元进行改进,得到五种新型推挽单元,以此为基础,提出基于耦合电感的推挽类拓扑的生成规则,并推衍出各类推挽单元的拓扑族。依据母线侧电流为低纹波的原则,将这些拓扑分成适用于BDR和适用于BCR两类,并列表比较其特性,总结各自的适用场合,为不同功率等级PCU中的BDR和BCR提供最优拓扑选择。最后,通过研制新生成升压比最高拓扑的试验样机验证理论分析的正确性。

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