Merged Switched-Capacitor Piezoelectric-Resonator Based DC-DC Converter with High Voltage Conversion Ratio

IF 1 4区工程技术 Q4 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Compel-The International Journal for Computation and Mathematics in Electrical and Electronic Engineering Pub Date : 2023-06-25 DOI:10.1109/COMPEL52896.2023.10221132

Qijia Li, Yuetao Hou, K. Afridi

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引用次数: 1

Abstract

Piezoelectric devices have recently emerged as a promising candidate to replace magnetic components. Past research has explored different topologies and control strategies for dc-dc converters which only use a single piezoelectric resonator as the main energy-storage component. However, such converters exhibit relatively low efficiency when the voltage conversion ratio deviates from its nominal value. In this paper, a new merged switched-capacitor piezoelectric-resonator based dc-dc converter which can achieve high and flat efficiency across a wide voltage conversion ratio is proposed. The switched capacitor and the piezoelectric resonator are combined in the proposed converter to form a multi-level structure and controlled in a manner to achieve high efficiency across a wide voltage conversion ratio. The proposed topology and control strategy enable the switched capacitor to be soft-charged by the current from the piezoelectric resonator and achieve zero-voltage-switching (ZVS) for all its switches. The steady-state operation of the proposed converter is analyzed in detail. Simulation and experimental results are presented to verify the advantages of the proposed converter. Finally, a family of merged switched-capacitor piezoelectric-resonator based dc-dc converters, based on the proposed principle, is also presented.

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基于开关电容压电谐振器的高电压转换比DC-DC变换器

近年来，压电器件已成为取代磁性元件的一种很有前途的候选器件。过去的研究已经探索了仅使用单个压电谐振器作为主要储能元件的dc-dc变换器的不同拓扑结构和控制策略。然而，当电压转换比偏离其标称值时，这种变换器的效率相对较低。本文提出了一种新型的基于开关电容压电谐振器的dc-dc变换器，该变换器在宽电压转换比下具有高而平坦的效率。将开关电容和压电谐振器组合在该变换器中，形成多级结构，并在宽电压转换比下实现高效率控制。所提出的拓扑结构和控制策略使开关电容能够被压电谐振器的电流软充电，并实现其所有开关的零电压开关(ZVS)。对该变换器的稳态运行进行了详细的分析。仿真和实验结果验证了该变换器的优越性。最后，根据所提出的原理，提出了一种基于开关电容压电谐振器的合并dc-dc变换器。

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

Compel-The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 工程技术-工程：电子与电气

CiteScore

1.60

自引率

0.00%

发文量

124

审稿时长

4.2 months

期刊介绍： COMPEL exists for the discussion and dissemination of computational and analytical methods in electrical and electronic engineering. The main emphasis of papers should be on methods and new techniques, or the application of existing techniques in a novel way. Whilst papers with immediate application to particular engineering problems are welcome, so too are papers that form a basis for further development in the area of study. A double-blind review process ensures the content''s validity and relevance.