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TERP
R
I
SE UPS
4
29
System Benefits Include:
■
The compact, lightweight, and reliable
Liebert FS flywheel system is safe and
environmentally friendly.
■
Offers a low installation cost, small footprint,
low maintenance and long operating life.
■
Unlike batteries, the Liebert FS uses no toxic
metals and emits no explosive gases.
■
Provides quick recharge, operates under a wide
range of temperatures.
■
Patented safety system provides a safe shutdown
under all circumstances.
■
When used with batteries, becomes the
primary DC energy source of more than 98% of
power disturbances (most power disturbances
last less than 4 seconds), reserving the battery
for longer outages, extending battery life and
improving overall UPS output reliability.
■
When used in a batteryless configuration,
provides the needed short-term DC energy
bridge to an engine generator.
How It Works:
The Liebert FS stores energy kinetically. When
needed
, ine
r
ti
a of the spinning mass is immediately
converted to power. The Liebert FS is a functional
replacement or supplement for a bank of chemical
ba
tt
e
ries. Like batteries, it charges from the two
terminal UPS DC bus and returns up to 190 kW per
module whenever the bus voltage drops below a
p
r
ogr
ammable threshold.
The flywheel itself is a high-speed, carbon fiber
c
om
po
site cylinder rotating in a vacuum. The
flywheel and rotating group is fully levitated and
centered by patented 5-point magnetic levitation
s
y
stem that minimizes drag and eliminates
mechanical bearings maintenance and replacement.
Its synchronous reluctance motor-generator
minimi
z
es idling losses and standby power
consumption. Originally designed for hybrid
vehicles, the levitation system is very robust and
r
e
sponsive to any jarring.
Upper Vacuum
Chamber
Br
eaker
H
eat Exchanger
D
ata Collection
Module
Magnetic
L
evitation
C
ontroller
Fl
ywheel
H
ousing
C
oolant Pump
Casters
Power
Electronics
Dis
play
In
terface Board
In
ductor-Filter
Upper Radial
Electromagnet
Lower Radial
Electromagnet
Axial
Electromagnet
P
a
t
ented
M
olec
ul
ar
V
a
c
uum
S
lee
v
e
2” Thi
ck Steel
C
ontainment
Vessel
Synchronous
Reluctance 4
Pole M-G
Rotor
Lower Vacuum
Chamber
Coolant
Passages
C
ar
bon Fiber
C
om
posite
Fl
yw
heel
Motor-Generator
Stator