Storage Capacitor Properties and Their Effect on Energy Harvester Performance
Written By: Radovan Faltus | Miroslav Jáně | Tomáš Zedníček
Abstract:
The development of energy harvesters has quickened up in the last few years mainly due to semiconductor improvements. But power sources for energy harvesters usually exhibit high internal impedance and can therefore only deliver low currents. The most important consideration for harvesting is that the power consumption of the controller circuitry must be less than the energy generated by the power source. Energy harvesters use a storage capacitor slowly charged from power source through the controller and the leakage current of this capacitor is wastes a certain percentage of the generated energy. This paper will evaluate this effects of different technology capacitors on energy harvester performance.
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The development of energy harvesters has quickened up in the last few years mainly due to semiconductor improvements. But power sources for energy harvesters usually exhibit high internal impedance and can therefore only deliver low currents. The most important consideration for harvesting is that the power consumption of the controller circuitry must be less than the energy generated by the power source. Energy harvesters use a storage capacitor slowly charged from power source through the controller and the leakage current of this capacitor is wastes a certain percentage of the generated energy. This paper will evaluate this effects of different technology capacitors on energy harvester performance.
