Energy Stowage Techniques

Electric field Stowage

Storage technique and device

Storage capacity, MJ

Energy density, kJ/kg

Power density, kW/kg

Pulse width, ms

Module voltage, volts

Source, impedance, ohms

Short-circuit current, kA

Storage time, s

Capacitor

0.015

0.2

8000

0.1-0.5

10,000

0.212

50

1000

Magnetic field Stowage

Storage technique and device

Storage capacity, MJ

Energy density, kJ/kg

Power density, kW/kg

Pulse width, ms

Module voltage, volts

Source, impedance, ohms

Short-circuit current, kA

Storage time, s

Inductor,Room Temperature

5

1.2

324

1-5

3000

0.002

1500

0.45

Inductor, Cryogenic

3

3.1

1000

1-100

5000

0.005

1000

1.2

Inductor, Superconducting

0.5

2.2

50

1

10,000

3142

3

1012

Inertial Stowage

Storage technique and device

Storage capacity, MJ

Energy density, kJ/kg

Power density, kW/kg

Pulse width, ms

Module voltage, volts

Source, impedance, ohms

Short-circuit current, kA

Storage time, s

Flywheel, DC Generator

0.8

0.32

0.3

1000

1800

0.0142

1

100

Flywheel, Homopolar generator

6

8.5

70

100-500

100

10-5

2000

415

Flywheel, Alternator

185

1.3

0.7

1000

6900

1.12

6

3000

Flywheel, Compulsato

0.2

3.8

250

0.1-2

6000

0.084

71

254

Electrochemical field Stowage

Storage technique and device

Storage capacity, MJ

Energy density, kJ/kg

Power density, kW/kg

Pulse width, ms

Module voltage, volts

Source, impedance, ohms

Short-circuit current, kA

Storage time, s

Battery

5

200

0.3

1000

12

0.02

0.5

108