一个具有MOSFET值电压管理的自动供电DSSH电路,用于收集压电能
Liao Wu1, Xinhui Wang1, Minghua Xie1
1School of Electronic Information and Electrical Engineering, Changsha University, Changsha 410022, China.
Micromachines
|August 26, 2023
概括
本研究介绍了一种改进的压电能收获电路,使用双同步开关收获 (DSSH) 原则. 与传统方法相比,这种新的设计提高了收获功率和充电效率,使得自动供电操作成为可能.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 收集能源 收集能源
背景情况:
- 压电 (PE) 能源采集对于为自主系统提供动力至关重要.
- 现有的同步开关采集 (SSH) 技术在精确的开关定时控制方面面临挑战.
- 双同步开关收获 (DSSH) 原则为增强能量捕获提供了潜力.
研究的目的:
- 根据DSSH原则,介绍一种基于DSSH原则的新型压电能采集电路.
- 为了解决DSSH电路中交换机定时控制的挑战.
- 与现有方法相比,提高输出功率和充电效率.
主要方法:
- 使用DSSH原则实现一个压电能收获电路.
- 在第二个循环中集成一个MOS晶体管,以简化控制器设计和管理储存的能量.
- 设计允许在DSSH或基于电容器值的增强同步开关收获 (ESSH) 方案下运行.
- 构建一个具有16个离散组件的原型电路.
主要成果:
- 拟议的电路表明,与全桥 (FB) 整流器相比,PE变频器的收获功率增加.
- 通过100 nF和320 nF的中间电容器,分别实现了3.2x和2.7x的功率增加.
- 与典型的DSSH电路相比,充电效率提高了5.1倍.
- 该电路表现出无需电池的自动供电启动能力.
结论:
- 拟议的基于DSSH的电路有效地提高了压电能收获性能.
- 集成的MOS晶体管简化了控制,并改善了能源管理.
- 该电路可显著提高输出功率和充电效率,适合自动供电应用.
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