Design and Implementation of Piezoelectric Energy Harvesting Circuit with Adaptive Inductor Sharing Strategy

FAN Shiquan; ZHU Yinuo; WANG Boren; MA Weiqing; ZHANG Guohe

doi:10.7652/xjtuxb202205010

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Design and Implementation of Piezoelectric Energy Harvesting Circuit with Adaptive Inductor Sharing Strategy

更新时间：2025-07-09

- Design and Implementation of Piezoelectric Energy Harvesting Circuit with Adaptive Inductor Sharing Strategy
- Vol. 56, Issue 5, Pages: 95-104(2022)
- 作者机构：
  
  西安交通大学电子与信息学部,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202205010
  CLC： TN384;TN712+.5
- Online First：10 May 2022，
  
  Published：2022
- 稿件说明：
移动端阅览
FAN Shiquan, ZHU Yinuo, WANG Boren, et al. Design and Implementation of Piezoelectric Energy Harvesting Circuit with Adaptive Inductor Sharing Strategy[J]. 2022, 56(5): 95-104.
DOI：

FAN Shiquan, ZHU Yinuo, WANG Boren, et al. Design and Implementation of Piezoelectric Energy Harvesting Circuit with Adaptive Inductor Sharing Strategy[J]. 2022, 56(5): 95-104. DOI： 10.7652/xjtuxb202205010.

摘要

针对以电池为能量供给的传感设备必然存在因电池寿命的限制或自身电能的逐渐耗尽而造成的失效问题

提出了一种具有自适应电感共享策略的压电振动能量收集电路

通过将环境中的机械振动能量最大化地转换为电能并供给传感设备使用

可实现传感设备的无电池自获能供电

并大幅延长传感设备的使用寿命。该能量收集电路在原有并联电感的同步开关收集电路结构和buck-boost功率级拓扑的阻抗匹配变换器结构基础上

通过建立“先到先得”的自适应电感共享策略

避免了仲裁器的使用

大幅简化了电路设计

并实现了仅需单一电感的压电振动能量收集系统

提升了系统的集成度。此外

对电感共享造成的竞争给出了详细分析

并在此基础上进一步优化了整体电路

实现了最大功率点追踪算法。采用标准180 nm CMOS工艺

完成了压电能量收集电路的设计工作。仿真结果表明:bias-flip整流器在2 V和3 V开路电压激励下

输出功率分别达到了55.01 μW和111.59 μW

较传统全桥整流器

分别实现了6.40倍和4.48倍的输出功率提升; 引入电感共享策略后

变换器的最大输出功率可达110.04 μW

相比于非电感共享策略

电感共享策略下变换器峰值输出功率提升了7.9%

峰值功率转换效率达到了91%。所设计的自获能压电能量收集系统有望解决现有传感设备的供电问题。

Abstract

A battery-powered sensing device may fail for limited battery life or electrical depletion of the device itself. To solve the problem

a piezoelectric energy harvesting circuit with the adaptive inductor sharing strategy is proposed in this paper. The energy of mechanical vibration in the environment can be converted to electric energy to power the sensing device. This can enable self-powering and significantly lengthened life of the sensing device. Based on original structures of the P-SSHI and buck-boost power stage-based impedance matching converter

the proposed circuit with the “first come

first served” adaptive inductor sharing strategy requires no use of an arbiter. Thus

the circuit is greatly simplified

and the system that only requires a single inductor is realized

which improves the integration. Additionally

sharing-caused competition is analyzed

the entire circuit is further optimized

and the MPPT algorithm is realized. The standard 180 nm CMOS process is applied for circuit design. The simulation results show that the bias-flip rectifier has an output power up to 55.01 μW and 111.59 μW under the OCV of 2 V and 3 V respectively. Compared with a conventional full-bridge rectifier

it increases the output power by 6.4 times and 4.48 times respectively. With the inductor sharing strategy

the peak output power of the converter can reach 110.04 μW. Compared with that without such a strategy

the peak output power is increased by 7.9% and the peak PCE reaches 91%. The self-powered piezoelectric energy harvesting system is expected to solve the power supply problem of existing sensing devices.

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