Two axis tracker proper orientation values

[kavhad]

Gents,

I'm trying to simulate a 5MW AC system using a dual axis tracker setup. I have simulated the production using Tracking Plane two axis which gave me a very small increase in production compared to a Single axis tracker (%3.4 increase in production, system is located in San Antonio Texas). However when I used Tracking tilted or horiz, N-S axis the production jumped a bit higher. I'm obviously doing something wrong here, can anyone please clarify if I'm entering the variables in orientation section correctly? Can I use Dual axis N-S in this case at all? Thanks

Tracker Datasheet

Usual two axis tracker

N-S Frame Two axis tracker