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This paper presents an electrostatic harvester of vibration energy based on multiple variable capacitors. Conventional electrostatic energy harvesters rely on a single variable capacitor working when driven by vibrations of sufficient amplitude and frequency. The proposed harvester is suitable for applications with low vibration amplitude and frequency because it can start in lower vibration conditions...
This paper presents a green electrostatic harvester of vibration energy based on a mechanically-variable capacitor. Conventional electrostatic energy harvesters rely on a startup battery to precharge the variable capacitor. The proposed harvester operates in regenerative mode and provides a similar output power without the need for a startup battery. A battery-less prototype was developed using a...
Electrostatic energy harvesters powered by ambient motion and integrated at the microscale are an attractive replacement for batteries in small, low-power electronic devices. This paper contains model and design considerations for electrostatic generators based on mechanically-variable capacitors. The performance of single-stage and multistage microgenerators are compared. The main design trade-offs...
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