Identification of the parameters of the equivalent electric circuit of electromagnetic harvesters

This paper concerns electromagnetic vibration energy harvesters. The knowledge of the equivalent electric circuit of electromagnetic harvesters is a fundamental need in order to be able to carry out numerical simulations of electromagnetic vibration harvesters. The aim of this paper is the description of a suitable procedure leading to the determination of the parameters of such an equivalent electric circuit. In fact, while in the case of the laboratory harvesters which are presented and discussed in the scientific literature such parameters are usually known, in the case of commercial devices instead such parameters must be extracted from the typical information which can be usually found in the manufacturers data sheet.