Multi-resonant three-port DC-DC converter with power decoupling under resonant parameter deviations

IF 1.3 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Power Electronics Pub Date : 2024-05-14 DOI:10.1007/s43236-024-00829-x
Xinsheng Zhang, Hongchen Liu
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Abstract

This article proposes a multi-resonant three-port DC-DC converter (MRTPC) that can achieve power decoupling in the presence of deviations in the parameters of the resonant elements. The MRTPC consists of a four-element resonant tank (FERT), a three-element resonant tank (TERT), and an LC resonant tank (LCRT). Due to the fact that the FERT can be configured with first and third resonant frequencies (RF), it can transmit the energy of the fundamental and third harmonic components. By reasonably setting the RFs of the FERT, TERT, and LCRT, decoupling control of primary and tertiary energy transmission can be achieved. Due to the characteristics of the FERT, TERT and LCRT at different frequencies, decoupling the transmission of the power of the primary and tertiary frequency components can be achieved even when there is a certain deviation in the parameters of the resonant elements of the FERT. This feature can effectively reduce the cost of selecting resonant elements. To improve the efficiency of the MRTPC, an optimized triple-phase-shift modulation strategy (OTPSMS) is proposed to minimize the root mean square value of the resonant current (RMSRC). For the nonlinear problem of minimizing the RMSRC, the KKT condition is used for the optimization solution. Finally, an experimental prototype with a power level of 1 kW is built to verify the theoretical correctness of the MRTPC and its OTPSMS.

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谐振参数偏差下具有功率去耦功能的多谐振三端口 DC-DC 转换器
本文提出了一种多谐振三端口 DC-DC 转换器 (MRTPC),可在谐振元件参数出现偏差时实现功率去耦。MRTPC 由一个四元件谐振槽 (FERT)、一个三元件谐振槽 (TERT) 和一个 LC 谐振槽 (LCRT) 组成。由于 FERT 可以配置第一和第三谐振频率 (RF),因此可以传输基波和三次谐波成分的能量。通过合理设置 FERT、TERT 和 LCRT 的射频,可以实现一次和三次能量传输的解耦控制。由于 FERT、TERT 和 LCRT 的频率特性不同,即使 FERT 谐振元件的参数存在一定偏差,也能实现一次和三次频率分量功率传输的解耦。这一特性可有效降低谐振元件的选择成本。为了提高 MRTPC 的效率,提出了一种优化的三相移相调制策略(OTPSMS),以最小化谐振电流的均方根值(RMSRC)。对于最小化谐振电流均方根值的非线性问题,优化解决方案采用了 KKT 条件。最后,建立了一个功率为 1 kW 的实验原型,以验证 MRTPC 及其 OTPSMS 的理论正确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Power Electronics
Journal of Power Electronics 工程技术-工程:电子与电气
CiteScore
2.30
自引率
21.40%
发文量
195
审稿时长
3.6 months
期刊介绍: The scope of Journal of Power Electronics includes all issues in the field of Power Electronics. Included are techniques for power converters, adjustable speed drives, renewable energy, power quality and utility applications, analysis, modeling and control, power devices and components, power electronics education, and other application.
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