Magnetic resonant harvesters and power management circuit for magnetic resonant harvesters

Abstract

This paper deals with the design of a vibration minigenerator and its power management electronics. The minigenerator is used as the independent energy source for wireless temperature sensors in NH-90 helicopters. The power management electronics is useful for this purpose as there exists interdependence between the generator output voltage instability and the helicopter vibrations instability.In this respect, it should also be proper to mention the necessity of applying the battery. Further, the presented article provides a description of two principles of the management electronics, namely the power factor corrector and the simple energy storage with a DC/DC regulator. It has been experimentally confirmed the minigenerator together with the electronics can save up to 52% battery energy according to the flight options with the used devices. Using the more efficient generator and electronics it should be up to 100% of the battery energy.

Power supply sources based on resonant energy harvesting

“…This model has been described in detail together with its numerical analysis in (Jirku et al 2009;Fiala 2003).…”

“…One of the examples is the vibration generator which converts mechanical energy into electrical (Jirku et al 2009;Fiala 2003;Li et al 2000). The vibration generator basically consists of magnetic circuit equipped with winding and vibrating part which carries the permanent magnet system.…”

“…The description of mentioned vibration generator is included in (Jirku et al 2009). As the second example described in this paper is the solar element resonant devices Fiala 2011a, b) which is introduced together with its principle description.…”

Coupled Numerical Model of Vibration-Based Harvester

“…In many projects and publications [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19], the arrangement of a system generating electric power is sought as a suitable or optimized solution of design proposals. A very satisfactory tool of basic research is numerical modeling [2][3][4]8,[17][18][19]. It can be very robust [2], but also can only be used as a tool for partially solving the hybrid modeling approach [8].…”

Topology Design Optimization of Electromagnetic Vibration Energy Harvester to Maximize Output Power

“…A single energy harvester has multiple PMs that induce multi-directional magnetic flux change [4,5]. Multiple harvesters are arrayed to increase output voltages by summing up voltage from each harvester, or to increase bandwidth by differing from each harvester's natural frequency [6,7].…”