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System-level coupled modeling of piezoelectric vibration energy harvesting systems by joint finite element and circuit analysis

System-level coupled modeling of piezoelectric vibration energy harvesting systems by joint finite element and circuit analysis
System-level coupled modeling of piezoelectric vibration energy harvesting systems by joint finite element and circuit analysis
A practical piezoelectric vibration energy harvesting (PVEH) system is usually composed of two coupled parts: a harvesting structure and an interface circuit. Thus, it is much necessary to build system-level coupled models for analyzing PVEH systems, so that the whole PVEH system can be optimized to obtain a high overall efficiency. In this paper, two classes of coupled models are proposed by joint finite element and circuit analysis. The first one is to integrate the equivalent circuit model of the harvesting structure with the interface circuit and the second one is to integrate the equivalent electrical impedance of the interface circuit into the finite element model of the harvesting structure. Then equivalent circuit model parameters of the harvesting structure are estimated by finite element analysis and the equivalent electrical impedance of the interface circuit is derived by circuit analysis. In the end, simulations are done to validate and compare the proposed two classes of system-level coupled models. The results demonstrate that harvested powers from the two classes of coupled models approximate to theoretic values. Thus, the proposed coupled models can be used for system-level optimizations in engineering applications.
1070-9622
1-9
Cheng, Congcong
9f135d1e-e063-4b22-b916-4e43e082c3a0
Chen, Zhongsheng
9893f775-a26a-4ebe-a4d9-d8224838fc9d
Shi, Hongwu
6f48bcc4-04f0-44c7-b45f-80f87bc0ca95
Liu, Ziniu
4470d401-aaae-4962-b297-1869f70edec4
Xiong, Yeping
51be8714-186e-4d2f-8e03-f44c428a4a49
Cheng, Congcong
9f135d1e-e063-4b22-b916-4e43e082c3a0
Chen, Zhongsheng
9893f775-a26a-4ebe-a4d9-d8224838fc9d
Shi, Hongwu
6f48bcc4-04f0-44c7-b45f-80f87bc0ca95
Liu, Ziniu
4470d401-aaae-4962-b297-1869f70edec4
Xiong, Yeping
51be8714-186e-4d2f-8e03-f44c428a4a49

Cheng, Congcong, Chen, Zhongsheng, Shi, Hongwu, Liu, Ziniu and Xiong, Yeping (2016) System-level coupled modeling of piezoelectric vibration energy harvesting systems by joint finite element and circuit analysis. Shock and Vibration, 2016, 1-9. (doi:10.1155/2016/2413578).

Record type: Article

Abstract

A practical piezoelectric vibration energy harvesting (PVEH) system is usually composed of two coupled parts: a harvesting structure and an interface circuit. Thus, it is much necessary to build system-level coupled models for analyzing PVEH systems, so that the whole PVEH system can be optimized to obtain a high overall efficiency. In this paper, two classes of coupled models are proposed by joint finite element and circuit analysis. The first one is to integrate the equivalent circuit model of the harvesting structure with the interface circuit and the second one is to integrate the equivalent electrical impedance of the interface circuit into the finite element model of the harvesting structure. Then equivalent circuit model parameters of the harvesting structure are estimated by finite element analysis and the equivalent electrical impedance of the interface circuit is derived by circuit analysis. In the end, simulations are done to validate and compare the proposed two classes of system-level coupled models. The results demonstrate that harvested powers from the two classes of coupled models approximate to theoretic values. Thus, the proposed coupled models can be used for system-level optimizations in engineering applications.

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More information

Accepted/In Press date: 3 February 2016
e-pub ahead of print date: February 2016
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 388801
URI: http://eprints.soton.ac.uk/id/eprint/388801
ISSN: 1070-9622
PURE UUID: f5d2d874-f067-4d64-b0be-36126b820e70
ORCID for Yeping Xiong: ORCID iD orcid.org/0000-0002-0135-8464

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Date deposited: 03 Mar 2016 12:11
Last modified: 17 Dec 2019 01:52

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Contributors

Author: Congcong Cheng
Author: Zhongsheng Chen
Author: Hongwu Shi
Author: Ziniu Liu
Author: Yeping Xiong ORCID iD

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