Energy storage method by coils

Abstract

Abstract PURPOSE:To eliminate the need for drawing large reactive power form the system in an energy storage system using coils. CONSTITUTION:In the case of energizing a superconducting coil 1, large capacity thyristor converter equipment 3 is used. In the case of releasing the energy of the coil 1, the converter equipment 3 is reverse-conversion-operated. In the period of keeping storing energy in the coil 1, the converter equipment 33 is operated when necessary. Namely, a switch 7 is held closed and a switch 4 held open. In the coil 1 the current circulates through the switch 7. Since the switch 7 is a normally conducting switch, it has a resistance, causing the current to attenuate. Because of this, the converter equipment 33 is run by closing a swirch 41. And the converter equipment 33 is only required to yield the output corresponding to the resistance loss portion of the converter equipment 33 itself, and reactor 82, switch 41 as well as lead wires.

Inventors

• 👤 Akiteru Ueda
• 👤 Atsumi Watabe

Bibliographic Details