Page 25 - North American Clean Energy September October 2015

Enabling time-based grid
CHP solar panel
power injection
he On-Grid A+ Model connects 2
Wagner Solar received SRCC certiication on their PVT Collector. he 2Power combined heat and
solar panels and a 36V battery. It is an power solar panel has a nominal power rating of 1000 Watt with 260 Welec and 760 Wthermal and is
enhanced version of an on-grid inverter now certiied under OG-100. he OG-100 certiication makes the new module eligible for incentives

which can pull power from batteries and and rebates under any solar thermal subsidy program.
send AC power to the grid. he battery Wagner & Co Solar Technology | www.wagner-solar.com
is charged using grid electricity during

the day when the grid has excess power.
A time switch is used to connect and
disconnect the battery to the inverter.
his way, one can set the switch to allow

the inverter to send power during grid
peak hours.
he On/Of-Grid A/N Model can oper-
ate as an on-grid inverter when the grid

is on. When the grid is down, both A
model and A+ model will shutdown im-
mediately. he A/N model will switch to
its of-grid mode automatically and pull

DC power from the same 36V battery
and provide backup AC power through
its of-grid output. he On/Of-Grid
A/N Model inverter is designed for the

U.S. market so that its on-grid output
generates 240V, 60Hz AC to the grid and
its of-grid output generates 120V, 60Hz
AC to run 120V AC loads. Diferent in-

verter models are available to meet the
AC standards globally.

Conclusion

hese systems are scalable designs.
Larger systems can be implemented
with multiple on-grid and on/of-grid
sub-systems of diferent sizes. he total

on-grid output power from each sub-
system can be combined in an electric
panel to be sent to the grid. Each sub-
system will have its own independent

of-grid circuit to power the connected
AC loads when the grid is down. his
enables a “plug-and-play” installation to

encourage large scale deployment.
A system with demand-based power
injection functions can have a large im-
pact on grid power stabilization, where

a large number of power inverters can
send power to the grid based on com-
mands from the grid dispatch center.
Utility companies should ofer incen-

tives to encourage home owners and
commercial users to implement systems
that can help stabilize the grid. On-
demand grid power injection, demand-

response pricing, and power arbitrage
should be encouraged and rewarded. Re-
newable energy technology and product
companies are working diligently to de-

velop useful products for such purposes.

Dr. George S. Cheng is the CTO at
CyboEnergy, Inc.

CyboEnergy, Inc. | www.cyboenergy.com

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North American Clean Energy