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混合压电/磁机电变压器

Hybrid Piezo/Magnetic Electromechanical Transformer.

作者信息

Rendon-Hernandez Adrian A, Smith Spencer E, Halim Miah A, Arnold David P

机构信息

Interdisciplinary Microsystems Group (IMG), University of Florida, Gainesville, FL 32611, USA.

出版信息

Micromachines (Basel). 2021 Oct 5;12(10):1214. doi: 10.3390/mi12101214.

DOI:10.3390/mi12101214
PMID:34683265
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8538393/
Abstract

This paper presents a hybrid electromechanical transformer that passively transfers electrical power between galvanically isolated ports by coupling electrodynamic and piezoelectric transducers. The use of these two complementary electromechanical transduction methods along with a high-Q mechanical resonance affords very large transformations of voltage, current, or impedance at particular electrical frequencies. A chip-size prototype is designed, simulated, fabricated, and experimentally characterized. The 7.6 mm × 7.6 mm × 1.65 mm device achieves an open-circuit voltage gain of 31.4 and 48.7 when operating as a step-up transformer at 729.5 Hz and 1015 Hz resonance frequencies, respectively. When operating as a step-down transformer, the resonance frequencies and the corresponding voltage gains are 728 Hz, 1002 Hz, and 0.0097, 0.0128, respectively. In one operational mode, the system shows a minimum power dissipation of only 0.9 µW corresponding to a power conversion efficiency of 11.8%.

摘要

本文介绍了一种混合式机电变压器，它通过耦合电动换能器和压电换能器在电隔离端口之间被动传输电能。这两种互补的机电转换方法与高Q值机械谐振的结合，在特定电频率下可实现电压、电流或阻抗的极大变换。设计、模拟、制造并对芯片尺寸的原型进行了实验表征。这个7.6毫米×7.6毫米×1.65毫米的器件，在729.5赫兹和1015赫兹谐振频率下作为升压变压器工作时，开路电压增益分别为31.4和48.7。当作为降压变压器工作时，谐振频率及相应的电压增益分别为728赫兹、1002赫兹以及0.0097、0.0128。在一种工作模式下，该系统的最小功耗仅为0.9微瓦，功率转换效率为11.8%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/39e9f5d2ae92/micromachines-12-01214-g018.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/e9e6272b047e/micromachines-12-01214-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/f8e04da13f7c/micromachines-12-01214-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/c3b1ac814814/micromachines-12-01214-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/e98e0df82b9e/micromachines-12-01214-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/677d4b89f64a/micromachines-12-01214-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/665503a0607c/micromachines-12-01214-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/b7b2f8c3ba79/micromachines-12-01214-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/ac94682907e7/micromachines-12-01214-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/b2a8ed773751/micromachines-12-01214-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/f7978ec319f0/micromachines-12-01214-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/3c932e28098d/micromachines-12-01214-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/09dd5a3dfc6f/micromachines-12-01214-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/64f6f471ba17/micromachines-12-01214-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/214904a7320f/micromachines-12-01214-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/9c5581ef35c5/micromachines-12-01214-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/6b079dcff78a/micromachines-12-01214-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/26e2aac1e111/micromachines-12-01214-g017.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/39e9f5d2ae92/micromachines-12-01214-g018.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/e9e6272b047e/micromachines-12-01214-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/f8e04da13f7c/micromachines-12-01214-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/c3b1ac814814/micromachines-12-01214-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/e98e0df82b9e/micromachines-12-01214-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/677d4b89f64a/micromachines-12-01214-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/665503a0607c/micromachines-12-01214-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/b7b2f8c3ba79/micromachines-12-01214-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/ac94682907e7/micromachines-12-01214-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/b2a8ed773751/micromachines-12-01214-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/f7978ec319f0/micromachines-12-01214-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/3c932e28098d/micromachines-12-01214-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/09dd5a3dfc6f/micromachines-12-01214-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/64f6f471ba17/micromachines-12-01214-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/214904a7320f/micromachines-12-01214-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/9c5581ef35c5/micromachines-12-01214-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/6b079dcff78a/micromachines-12-01214-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/26e2aac1e111/micromachines-12-01214-g017.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3d8e/8538393/39e9f5d2ae92/micromachines-12-01214-g018.jpg

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