1. System Elements
a) Module/Array
b) Rack/trackers
c) DC wiring system
d) Max-Power Point Tracking
e) DC to AC Conversion
f) AC wiring and transformers
2. System Architectures
a) Conventional design: Multiple strings connected to inverter with MPPT
b) String-Level MPPT: Multiple strings (with MPPT) connected to inverter w/o MPPT
c) String-Level Inverters: Separate inverter for each string
d) Module-Level MPPT: Each module with MPPT connected in series and parallel to inverter
e) Module-Lever Inverters: Microinverters on each module