Comparison of two micro-inverter active power curtailment (APC) methods from design-for-reliability aspect

Application of 217plus^TM reliability prediction methodology with additionally proposed time fraction weighting factors

The scope of reliability study involves: electrolytic DC bus capacitors, DC-DC MOSFETs and AC protective relays

The study reveals that APC can decrease the failure rate of MOSFETs and capacitors.

Depending on the selected APC method the capacitor failure rate reduction is either 6% or 54%