Select highest number from Step 7 & 8.
Step 7 -- Minimum MPPT Voltage, Ns min mppt = 6 units
Step 8 -- Minimum Start Voltage, Ns min start = 5 units
The minimum number of PV modules that can be connected in series is 6 units.
Ns Total PV modules in series per string
Ns max Maximum number of PV modules that can be connected in series from Step 5 Maximum Number of PV Modules Based on Inverter
From Step 5 Maximum Number of PV Modules Based on Inverter, Ns max = 15 units
Ns = 6 ... 15
Design And Sizing of Grid-Connected Photovoltaic Power System - SEDA Malaysia- 4th Published 2023
Example 4.9
SEDA GCPV Tutorial Design - Nov 2024
2. Sizing with string or central inverter - Question 3
2. Sizing with string or central inverter - Question 4
2. Sizing with string or central inverter - Question 5