Stationary pure sine
wave inverter panels are fixed, either by the installer or the homeowner,
at the optimum angle for solar exposure; that is, in Australia, at 35 degrees
latitude south, where the sun's declination varies from 78.5 in the summer to
31.5 in the winter, most rooftop systems will rely on an approximately 52.3
degrees declination, allowing for a 22.6-roof tilt angle (or a 5/12 roof
pitch). Unfortunately, in more northern climes, the angle of the sun's rays in
summer varies from winter by much more than 60 degrees, which means targeting
summer sunlight makes winter solar energy generation somewhat iffy.
dc to ac inverter
trackers solve this problem. The basic solution, a single axis horizontal
tracker, follows the sun across the sky from morning to evening, optimizing
solar performance during spring and summer days, when the sun is higher in the
sky. Unfortunately, they are less useful the farther north one goes, since (as
noted above) the variance the sun's angle is greater between summer and winter,
so any setting along the horizontal diminishes performance the other 60 percent
of the year.
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