Flywheel device used for energy storage including a hermetically sealed cylinder section and disc-shaped rotor arranged within cylinder section

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11283328
APP PUB NO 20200212762A1
SERIAL NO

16813468

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A flywheel energy storage system incorporates various embodiments in design and processing to achieve a very high ratio of energy stored per unit cost. The system uses a high-strength steel rotor rotating in a vacuum envelope. The rotor has a geometry that ensures high yield strength throughout its cross-section using various low-cost quenched and tempered alloy steels. Low-cost is also achieved by forging the rotor in a single piece with integral shafts. A high energy density is achieved with adequate safety margins through a pre-conditioning treatment. The bearing and suspension system utilizes an electromagnet that off-loads the rotor allowing for the use of low-cost, conventional rolling contact bearings over an operating lifetime of several years.

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Patent Owner(s)

Patent OwnerAddress
SAINT-AUGUSTIN CANADA ELECTRIC INCSAINT-AUGUSTIN-DE DESMAURES CA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dharan, Cheruvari Karthik Hari Berkeley, US 10 89

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