Surrogacy-Based Maximization of Output Power of a Low-Voltage Vibration Energy Harvesting Device

Marcin Kulik,Marian Łukaniszyn,Mariusz Jagieła

doi:10.3390/app10072484

Marcin Kulik, Marian Łukaniszyn + Show 1 more

Open Access

https://doi.org/10.3390/app10072484

Copy DOI

Journal: Applied sciences	Publication Date: Apr 4, 2020
Citations: 5	License type: CC BY 4.0

Affiliation: Opole University of Technology

Abstract

The coreless microgenerators implemented in electromagnetic vibration energy harvesting devices usually suffer from power deficiency. This can be noticeably improved by optimizing the distribution of separate turns within the armature winding. The purposeful optimization routine developed in this work is based on numerical identification of the turns that contribute most to the electromotive force and the elimination of those with the least contribution in order to reduce the internal impedance of the winding. The associated mixed integer nonlinear programming problem is solved comparatively using three approaches employing surrogate models based on kriging. The results show very good performance of the strategy based on a sequentially refined kriging in terms of the ability to accurately localize extremum and reduction of the algorithm execution time. As a result of optimization, the output power of the system increased by some 300 percent with respect to the initial configuration.

Highlights

There has been considerable interest in small converters harvesting energy from various sources available in the environment, such as industrial machinery, civil structures, and even humans or animals
As a result of optimization, the output power of the system increased by some 300 percent with respect to the initial configuration
These systems are applicable in sensor networks or monitoring systems [1,2,3,4,5,6,7,8,9] that require autonomy of power supply

Summary

Introduction

There has been considerable interest in small converters harvesting energy from various sources available in the environment, such as industrial machinery, civil structures, and even humans or animals These systems are applicable in sensor networks or monitoring systems [1,2,3,4,5,6,7,8,9] that require autonomy of power supply. Sci. 2019, 9, x FOR PEER REVIEW these systems suffer from a low value of induced electromotive force (emf), and generated power Their very low volt-per-turn ratio often the impedance of the armature coils too high the for the electronic of the induced to any practical value. Refinement of the computer experiment grid [23]

System and Its Mathematical Model

Optimization Strategies and Results

Objective

Discussion