Embedded Files
Assumption
Assumption
PV cell temperature range is 20 °C - 75 °C
JASA 250W PV modules and MICE0.25 micro-inverter are selected
Datasheet JASA PV module
Datasheet MICE family
Concept
Concept
Ns max abs = round down [Vmax abs mic inv] / [Voc max]
Ns max abs Maximum number of PV modules in series based on maximum absolute input voltage of micro-inverter
Vmax abs mic inv Maximum absolute input voltage of the micro-inverter
Voc max Maximum open circuit voltage of the PV module
2.1 Calculate Voc max
2.1 Calculate Voc max
Voc STC Open circuit voltage of the PV module at STC (V)
βVoc Temperature coefficient for open circuit voltage (% °C⁻¹ or % K⁻¹)
Tmod min Lowest module temperature (°C)
TSTC Module temperature at STC (°C), 25 °C
2.2 Calculate Ns max abs
2.2 Calculate Ns max abs
Ns max abs = round down [65/38.534] = round down [1.68] = 1 unit
It's safe to connect 1 unit of PV module in series per string for each micro-inverter. So, the micro-inverter wouldn't be damaged during OFF mode.
Reference
Reference
Design And Sizing of Grid-Connected Photovoltaic Power System - SEDA Malaysia- 4th Published 2023
Example 5.2
Page updated
Google Sites
Report abuse