1. Array orientation is an important input to any PV performance model calculation. Array orientation is usually described as either fixed tilt or tracked. A fixed tilt orientation is one that does not move. A tracked array’s orientation changes with time as the tracker moves the array in an attempt to reduce the angle of incidence between the sun and the array. There are a number of different types of trackers, which are defined by how they move. Array orientation is described by vectors of the array tilt angle and the array azimuth angle for each time interval in the calculation.
2. Installing modules in a sunny, shade-free spot and pointing them toward the sun could be considered common sense to many, but properly orienting and tilting your array for optimal performance is not as intuitive. A PV array’s output is proportional to the direct sunlight it receives. Even though PV modules produce some energy in a shady location or without ideal orientation, system costs are high enough that most will want to maximize energy yield.
Location, direction, placement
Irradiation, Photovoltaic Module
https://pvpmc.sandia.gov/modeling-steps/1-weather-design-inputs/array-orientation/ (1.); https://www.homepower.com/articles/solar-electricity/design-installation/optimizing-pv-array-orientation-tilt. (2.)
Author: Anas Naddour