56 I ICT TODAY
3% to 6%
AC Grid
45%+
Reduction in energy waste
by using DC power
AC DC
DC
DC
DC DC
3% to 6%
2% to 5% 2% to 5%
4% to 8% 4% to 8%
DC Storage
3% to 5%
3% to 10%
0%
DC
DC
Review of the Power Distribution Strategies (AC, PoE, Fault Managed Power)
The AC and DC electricity have been part of our lives since 1886. Since then, AC has been the dominant power source
for transmission and consumer use. Furthermore, DC has remained dominant in providing the last "foot" of power
to consumer devices because most modern devices immediately convert AC to DC internally to achieve operational
and efficiency goals.
In 2015 Digital Electricity
TM
(DE) was introduced by VoltServer
TM
. Digital Electricity is the delivery of high-voltage
DC power via packet energy transfer format between a transmitter and a receiver (Figure 6).
ms = millisecond
FIGURE 6: Digital Electricity
TM
VoltServer, Inc. Source: VoltServer, Inc.
FIGURE 5: Reduction in energy waste by using DC power. Source: CSA Group.
Looking at a DC distributed power strategy, which applies to both PoE and FMP, a realization up to a 45 percent
reduction in energy waste with the elimination of the power losses due to the conversion of DC to AC and then back
to DC for the transmission (Figure 5).
DIGITAL ELECTRICITY
™
IS SAFE ELECTRICITY
ON THIN COMMUNICATION CABLE
Conventional
Electricity
Software Control and
Analytics
Transmitter
Energy Packet
Energy Safety Check
Wires Receiver Loads
Discrete "packets" of electricity checked for safe transfer
from transmitter to receiver 500 times per second
