Hybrid Energy Harvesting Methodology for Wireless Sensors in Condition Monitoring of Power Equipments

The paper has proposed a hybrid scheme of magnetic, thermoelectric and vibration energy harvesting (EH) within power grid. This novel topology aims at providing power supply for low-power wireless sensors or devices deployed in condition monitoring of power equipments. To the end, energy conversion properties of the three EH methods were investigated first by simulation and experiments. Particularly, a kind of optimized structure for stick-on magnetic harvester has been developed. Whereafter, the paper structured a hybrid energy management system with ultra-low power consumptive circuitry. It enables joint access of the three sources, and conduces to enhance the output capacity. Simulation and experiment results indicate that in situations of representative energy profiles, magnetic and…