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无损开关模式功率变换器中的稳态不确定性

Steady-State Indeterminacy in Lossless Switched-Mode Power Converters

语言:

中文摘要

本文首次揭示了无损开关功率变换器可能不存在唯一的稳态解,而是表现出固有的稳态行为不确定性。研究表明,只有在分析中引入损耗项,才能获得唯一解。此外,奇数阶无损变换器永远无法获得唯一稳态解。

English Abstract

In this article, it is shown for the first time that lossless switched-mode power converters may not possess a unique steady-state solution. Rather, they can exhibit an inherent indeterminacy in their steady-state behavior, and a unique solution is only found when losses are included in the analysis. Even more interestingly, it is shown that lossless converters of odd order never possess a unique ...
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SunView 深度解读

该研究揭示了理想化建模在分析变换器稳态特性时的局限性,对阳光电源的研发具有重要指导意义。在组串式逆变器和PowerTitan/PowerStack储能变流器(PCS)的开发中,若仅基于理想无损模型进行控制策略设计或仿真,可能导致对系统稳态运行点预测的偏差。建议研发团队在进行高频DC-DC变换器及多级功率拓扑设计时,必须将寄生参数和实际损耗纳入建模范畴,以确保在复杂工况下的控制稳定性与输出精度,避免因模型简化导致的系统振荡或稳态误差。