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WorksheetsSOLAR MOD. 8: INVERTERS
Total questions: 10
Worksheet time: 5mins
Inverters convert...?
AC to DC
DC to AC
AC to higher power DC
DC to higher power AC
Grid-tied inverters were first designed by SMA in…
1839
1891
1991
2001
Before sending power into the grid, a grid-tied
inverter must test and match the…
frequency
voltage
phase
all of the above
Stand-alone inverters are connected to the grid or to a bank of batteries?
Grid
Batteries
Grid and batteries
None of the above
When the grid shuts down for any reason, a grid-tied solar system typically ...
continues to function as long as the sun is shining.
shuts down also.
transfers power to the grid as needed
is not affected.
For an inverter to be connected to the grid, it must
be…
Non-islanding
Expensive
Asynchronous
Battery enabled
A small inverter that attaches by the solar panel so
that you don’t need a system inverter is called a…
micro-inverter
string inverter
DC inverter
There's no such thing!
After the inverter but before the AC distribution
panel, a system requires a…
warning label
DC disconnect
AC disconnect
system controller
The efficiency of a typical inverter…
is about 97-98%
peaks out after a certain % of power rating is used
varies greatly
is almost 100% nowadays
Most inverters maximize output power by using…
MPPT
optimization algorithms
good designs
voltage-current fluctuations
