A potential energy storage system incorporating multiple track mounted shuttle units (22) having motor/generator (102) drive bogies (76) and structure (88, 90) with an integral transfer mechanism (80, 86, 87) for removably carrying energy storage masses from a first lower elevation storage yard (12) to a second higher elevation storage yard (10) employing excess energy from the electrical grid driving the motors, removing the masses in the second storage yard for energy storage, retrieving the masses and returning the masses from the second storage yard to the first storage yard recovering electrical energy through the generators.
Utility scale electric energy storage system
2015-09-03
Patent
Electronic Resource
English
IPC: | B61C Lokomotiven , LOCOMOTIVES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / F03G Feder-, Gewichts-, Trägheits- oder ähnliche Kraftmaschinen , SPRING, WEIGHT, INERTIA, OR LIKE MOTORS / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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