METHOD AND DEVICE FOR CHARGING A STORAGE DEVICE WITH ENERGY FROM AN ENERGY HARVESTER

A method for charging a storage device, such as a capacitor or a supercapacitor, with energy from an energy harvester and using a voltage converter having a coldstart voltage convertor and a main voltage converter is provided. After charging a buffer capacitor with the coldstart voltage converter up to the first voltage V, the method repetitively performs steps of a) charging the buffer capacitor with the main voltage converter up to a voltage V>V, followed by transferring charges from the buffer capacitor to the storage device, b) stopping transferring charges to the storage device when the voltage of the buffer capacitor is below a third voltage value V, with V