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Optimization of diode bridge rectifier output voltage in Train Suspension Energy Harvesters | IEEE Conference Publication | IEEE Xplore

Optimization of diode bridge rectifier output voltage in Train Suspension Energy Harvesters


Abstract:

This paper is focused on energy harvesting from railcar suspensions. In particular, the power extracted from a train suspension energy harvester based on a mechanical mot...Show More

Abstract:

This paper is focused on energy harvesting from railcar suspensions. In particular, the power extracted from a train suspension energy harvester based on a mechanical motion rectifier system is evaluated in presence of a passive AC/DC converter. Through a proper theoretical analysis, experimentally validated, it is shown that the extracted power is strictly dependent on the DC side voltage and that the value of the DC voltage at the output of the diode bridge rectifier maximizing the average extracted power is proportional to the generator speed. The above analysis is essential for the proper design of maximum power point tracking techniques.
Date of Conference: 16-18 June 2020
Date Added to IEEE Xplore: 15 July 2020
ISBN Information:

ISSN Information:

Conference Location: Palermo, Italy

I. Introduction

Internet of Things smart devices can be profitably used in freight trains applications for improving transportation safety and efficiency. These smart devices need to be supplied even if, on freight trains, the electricity lacks. Therefore, in order to overcome such a limitation it is necessary to look for the harvesting of alternative energy sources. A promising solution is represented by the harvesting of the vibrations mechanical energy dissipated in railcar suspensions. In the literature, a number of Train Suspension Energy Harvesters (EHs) has been proposed [1]. The great majority of these systems is based on a three-phase electromagnetic generator [2]. In [3] an energy harvester system for railcar suspensions composed by a rack and pinion shaft, a Mechanical Motion Rectifier (MMR), a gearhead and a three-phase electromagnetic generator is proposed.

References

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