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Resonant electromagnetic vibration harvesters applications: Optimization of P&O MPPT technique parameters | IEEE Conference Publication | IEEE Xplore

Resonant electromagnetic vibration harvesters applications: Optimization of P&O MPPT technique parameters


Abstract:

In this paper it is shown that Resonant Electromagnetic Vibration Energy Harvester (REVEH) systems nearly always need to be equipped with suitable MPPT (Maximum average P...Show More

Abstract:

In this paper it is shown that Resonant Electromagnetic Vibration Energy Harvester (REVEH) systems nearly always need to be equipped with suitable MPPT (Maximum average Power Point Tracking) controllers due to the fact that the characteristics of vibrations (frequency, amplitude etc.) change with time. The particular (but frequent) case of Constant Frequency Time Varying Amplitude (CFTVA) vibrations will be considered. In particular, the guidelines for the optimization of the P&O MPPT technique to adopt in REVEH systems in the case of CFTVA vibrations are provided. It is demonstrated that both the sampling frequency fP&O and the amplitude Δd of the P&O duty cycle perturbation need to fulfill suitable inequalities in order to get an efficient REVEH system.
Date of Conference: 10-12 April 2018
Date Added to IEEE Xplore: 24 May 2018
ISBN Information:
Conference Location: Monte Carlo, Monaco

I. Introduction

Vibration energy harvesters [1]–[7] are widely used in order to feed Wireless Sensor Nodes (WSNs) [8]–[9]. This paper is focused in particular on Resonant Electromagnetic Vibration Energy Harvesters (REVEHs) [5]–[7]. In Fig. 1, a typical REVEH system is shown. The REVEH has been represented by means of its equivalent electric circuit [8]. is the coil inductance, is the coil resistance, is the base acceleration with an angular frequency . The values of and are: , is the viscous damping coefficient, Θ is the electromechanical coupling coefficient, is the stiffness coefficient, m is the vibrating mass).

REVEH system.

References

References is not available for this document.