What is the charging and discharging efficiency of the energy storage cabinet

What are the performance characteristics of a storage system?

K. Webb ESE 471 9 Efficiency Another important performance characteristic is efficiency The percentage of energy put into storage that can later be extracted for use All storage systems suffer from losses Losses as energy flows into storage Losses as energy is extracted from storage K. Webb ESE 471 10 Round-Trip Efficiency

What are the merits of energy storage systems?

Two primary figures of merit for energy storage systems: Specific energy Specific power Often a tradeoff between the two Different storage technologies best suited to different applications depending on power/energy requirements Storage technologies can be compared graphically on a Ragone plot Specific energy vs. specific power

What type of energy is stored in different domains?

Energy stored in many different domains Input and output energy is electrical Three-phase AC power Conversion is required between the storage domain and the electrical domain Transformer Power conversion system (PCS) K. Webb ESE 471 27 System Configurations – Mechanical Mechanical storage Pumped hydro, flywheels, compressed air

How can storage technologies be compared graphically on a Ragone plot?

Storage technologies can be compared graphically on a Ragone plot Specific energy vs. specific power Specific storage devices plotted as points on the plot, or Categories of devices plotted as regions in the Ragone plane K. Webb ESE 471 18 Ragone Plots K. Webb ESE 471 19 Discharge Time

What is a specific storage device?

Specific storage devices plotted as points on the plot, or Categories of devices plotted as regions in the Ragone plane K. Webb ESE 471 18 Ragone Plots K. Webb ESE 471 19 Discharge Time Any given storage system will have a specific energy capacity and a specific power rating