A parameter design method of LC filter circuit for closed-loop dynamic power supply system based on linear power amplifier

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-07-01 DOI:10.1049/pel2.12743

Feixiang Yang, Xueqing Wang, Jin Luo, Qianwen Duan, Zongqi Ning, Yao Mao

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Abstract

The linear power amplifier (LPA) suffers from low power supply utilization in the DC power supply mode, leading to reduced output efficiency. This paper constructs an efficient power supply mode based on closed-loop dynamic power supply system (CLDPSs). The CLDPSs can generate a pair of bipolar dynamic power supplies based on a predetermined signal to provide power to LPA, which can maintain a small voltage drop between the power supply and the output of LPA, thereby improving the power supply utilization of LPA. In addition, the study also focuses on the conflicting relationship between the output ripple and the dynamic performance of the CLDPSs, for which a new parametric design of the LC filter circuit is proposed, aiming to achieve a balance between these two aspects. Finally, a voice coil motor driving platform is constructed for experimental testing. The results demonstrate that the output ripple and dynamic performance of the CLDPSs can be balanced. In comparison to the DC power supply mode, the CLDPSs power supply mode can enhance the efficiency of LPA by 2 times while the driving accuracy of voice coil motor is basically unchanged.

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基于线性功率放大器的闭环动态电源系统 LC 滤波电路参数设计方法

线性功率放大器（LPA）在直流供电模式下电源利用率低，导致输出效率降低。本文构建了一种基于闭环动态电源系统（CLDPS）的高效电源模式。CLDPS 可根据预定信号生成一对双极动态电源，为 LPA 供电，从而使电源与 LPA 输出之间保持较小的压降，从而提高 LPA 的电源利用率。此外，研究还关注了 CLDPS 输出纹波与动态性能之间的矛盾关系，并为此提出了一种新的 LC 滤波电路参数化设计，旨在实现这两方面的平衡。最后，构建了音圈电机驱动平台进行实验测试。结果表明，CLDPS 的输出纹波和动态性能可以达到平衡。与直流供电模式相比，CLDPSs 供电模式可将 LPA 的效率提高 2 倍，而音圈电机的驱动精度基本保持不变。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.