Step 11 DC/AC Ratio Per MPPT

11.1 Find Np,NS, Pout max, Pmax STC and Nmppt

1. From Step 10 Number of Strings per MPPT,

   • Np = 1

   • Ns = 11

2. From SOLARMAN 200W PV Module Datasheet --> Nominal or Rated power (AC part)

   • Pnominv = 3680 W

3. From SUNMAN Inverter Datasheet --> Nominal power (+/- 5%)

   • Pmax STC = 200 W

4. From SUNMAN Inverter Datasheet --> Number of independent MPPT inputs / String per MPPT input

   • Nmppt = 2 units

What does Number of independent MPPT inputs / String per MPPT input 2 / A: 2 B: 2 means?

1. String = A series-connected group of solar panels

2. Number of independent MPPT inputs = 2

   • The inverter has 2 separate MPPT trackers.

   • MPPTs optimize the output of the PV strings they’re connected to independently of one another. This is especially helpful if you have different roof orientations, different shading conditions, or different string lengths.

3. String per MPPT input = A: 2 B: 2

   • MPPT "A" can accept up to 2 strings of panels wired in parallel.

   • MPPT "B" can also accept up to 2 strings of panels wired in parallel.

11.3 Final PV Configuration for each MPPT

If Nmppt = n,

MPPT [n-1] : [Np] *[ Ns ], DC/AC ratio = [f1]

 MPPT [n] : [Np] * [Ns ], DC/AC ratio = [f1]

MPPT A : 1 * 11 , DC/AC ratio = 1.195

MPPT B : 1 * 11 , DC/AC ratio = 1.195