1. Principle of electrical energy storage
1.1 Storage in passive elements
Storing electrical energy in passive elements requires confined fields in limited volumes:
-
the magnetic excitation fieldH in the space inside a magnetic circuit of a coil; the stored volumetric energy v (in J · m–3) is then :
with :
- μ 0 :
- vacuum permeability,
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Principle of electrical energy storage
Durable storage in supercapacitors
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