TrakStar MPPT Technology and Maximum Input Power

Morningstar’s TrakStar™ MPPT Technology & Maximum Input Power
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The Morningstar Name and the Morningstar Logo as well as the TriStar MPPT, SunSaver MPPT and TrakStar names are all the trademarks of Morningstar Corporation.
© 2013 Morningstar Corporation. All rights reserved.
Q6. Can I oversize other brands of MPPT Controllers?
Morningstar’s TriStar MPPT™ & SunSaver MPPT controllers are the only controllers that will always limit the
output current regardless of input power levels. Morningstar’s patented TrakStar Technology is capable of
limiting the output current, while other manufacturers’ MPPT controllers will operate above their maximum
current ratings at higher power levels.
Morningstar’s MPPT controllers can operate with an oversized array that is several times larger than the
maximum Nominal Solar PV ratings, while still limiting the maximum battery current to the controller’s
maximum current rating. Many other MPPT controllers on the market cannot react quickly enough for fast
changes in solar conditions. Even at the published maximum power levels, these controllers are known to exceed
their maximum output current ratings and can trip the overcurrent protection fault shutting off the controller
during high power conditions.