Energy Harvesting from the Stray Electromagnetic Field around the Electrical Power Cable for Smart Grid Applications

Table 2

Dimension and parameters of developed energy harvester prototypes.

Harvester’s type	Description	Prototype-1	Prototype-2	Prototype-3	Prototype-4	Prototype-5
Inductive energy harvester	Material	Mild steel	Mild steel	Mild steel	Mild steel	Mild steel
	Core’s height	9 cm	4.5 cm	3.5 cm	3.5 cm	9 cm
	Core’s sheet length	6.9 cm	6.9 cm	20 cm	6.9 cm	6.9 cm
	Number of turns of copper coil	750	600	1300	400	450
	Coil’s resistance	20.1	7.5	14.3	4.4	10.1
Capacitive energy harvester	Spacer material	Teflon	Teflon	—	—	Teflon
	Outer diameter	5 cm	5 cm	—	—	5 cm
	Inner diameter	2 cm	2 cm	—	—	2 cm
	Thickness	0.7 cm	0.7 cm	—	—	0.6 cm