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A Low-Power High-Efficiency Adaptive Energy Harvesting Circuit for Broadband Piezoelectric Vibration Energy Harvester
| Content Provider | MDPI |
|---|---|
| Author | Zou, Aicheng Liu, Zhong Han, Xingguo |
| Copyright Year | 2021 |
| Description | Existing piezoelectric vibration energy harvesting circuits require auxiliary power for the switch control module and are difficult to adapt to broadband piezoelectric vibration energy harvesters. This paper proposes a self-powered and low-power enhanced double synchronized switch harvesting (EDSSH) circuit. The proposed circuit consists of a low-power follow-up switch control circuit, reverse feedback blocking-up circuit, synchronous electric charge extraction circuit and buck-boost circuit. The EDSSH circuit can automatically adapt to the sinusoidal voltage signal with the frequency of 1 to 312.5 Hz that is output by the piezoelectric vibration energy harvester. The switch control circuit of the EDSSH circuit works intermittently for a very short time near the power extreme point and consumes a low amount of electric energy. The reverse feedback blocking-up circuit of the EDSSH circuit can keep the transmission efficiency at the optimal value. By using a charging capacitor of 1 mF, the charging efficiency of the proposed EDSSH circuit is 1.51 times that of the DSSH circuit. |
| Starting Page | 327 |
| e-ISSN | 20760825 |
| DOI | 10.3390/act10120327 |
| Journal | Actuators |
| Issue Number | 12 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-12-10 |
| Access Restriction | Open |
| Subject Keyword | Actuators Industrial Engineering Piezoelectric Vibration Energy Harvester Low-power High-efficiency Circuit |
| Content Type | Text |
| Resource Type | Article |
