试验验证的模拟模型的基础激发的压电振动能量收割机连接到一个完整的波正负载
Philip Bonello1, Maher Alalwan1
1Department of Mechanical and Aerospace Engineering, University of Manchester, Manchester M13 9PL, UK.
Sensors (Basel, Switzerland)
|October 29, 2025
概括
这项研究验证了对压电振动能量采集的模拟,准确地建模了非理想的二极管,以获得稳定的直流输出. 模拟可靠地预测系统性能,这对于实际应用至关重要.
科学领域:
- 收集能源 收集能源
- 固态物理 固态物理
- 机械工程 机械工程
背景情况:
- 压电振动能量采集 (PVEH) 系统需要通过AC-DC纠正稳定的直流输出.
- 模拟中的理想化二极管模型在振动诱导电压低时失败,这在实践中很常见.
研究的目的:
- 以非理想的二极管模型呈现PVEH系统的实验验证模拟.
- 为实际PVEH应用准确建模AC-DC整形过程.
主要方法:
- 欧勒-伯努利压电束模型的组合分析模态转换.
- 真实二极管的集成非线性电流电压特性 (肖克利二极管模型).
- 使用三种行业标准二极管类型进行实验验证的模拟.
主要成果:
- 模拟和测量的共振电压差异平均低于10%.
- 模拟和测量的共振频率差异平均小于1%.
- 肖克利二极管模型证明了可靠性,尽管省略了动态二极管的行为.
结论:
- 经过验证的模拟准确地预测了使用非理想二极管的PVEH系统性能.
- 这种方法提高了压电能收获系统的实际应用性.
- 准确的二极管建模对于可靠的PVEH系统设计至关重要.
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